This is a free tutorial video on how to use the FLASHBACK TABLE query to restore a dropped table in oracle, and we have given some useful information on PURGE, RECYCLEBIN and shown some demo on how to restore a dropped table in oracle.
Views: 2307 Kishan Mashru
Hi.. Guys In This Video We Learn How To Recover Drop Table Using Flashback Query In Oracle 11g On Windows Cover Following Point In This Video 1. Create Table 2. Insert Record In Created Table 3. Drop Table 4. Recycle bin 5. Recover Table Using Flashback
Views: 207 PGT POINT
In this tutorial, you'll learn the difference between delete/drop and truncate. PL/SQL (Procedural Language/Structured Query Language) is Oracle Corporation's procedural extension for SQL and the Oracle relational database. PL/SQL is available in Oracle Database (since version 7), TimesTen in-memory database (since version 11.2.1), and IBM DB2 (since version 9.7). Oracle Corporation usually extends PL/SQL functionality with each successive release of the Oracle Database. PL/SQL includes procedural language elements such as conditions and loops. It allows declaration of constants and variables, procedures and functions, types and variables of those types, and triggers. It can handle exceptions (runtime errors). Arrays are supported involving the use of PL/SQL collections. Implementations from version 8 of Oracle Database onwards have included features associated with object-orientation. One can create PL/SQL units such as procedures, functions, packages, types, and triggers, which are stored in the database for reuse by applications that use any of the Oracle Database programmatic interfaces. PL/SQL works analogously to the embedded procedural languages associated with other relational databases. For example, Sybase ASE and Microsoft SQL Server have Transact-SQL, PostgreSQL has PL/pgSQL (which emulates PL/SQL to an extent), and IBM DB2 includes SQL Procedural Language, which conforms to the ISO SQL’s SQL/PSM standard. The designers of PL/SQL modeled its syntax on that of Ada. Both Ada and PL/SQL have Pascal as a common ancestor, and so PL/SQL also resembles Pascal in several aspects. However, the structure of a PL/SQL package does not resemble the basic Object Pascal program structure as implemented by a Borland Delphi or Free Pascal unit. Programmers can define public and private global data-types, constants and static variables in a PL/SQL package. PL/SQL also allows for the definition of classes and instantiating these as objects in PL/SQL code. This resembles usage in object-oriented programming languages like Object Pascal, C++ and Java. PL/SQL refers to a class as an "Abstract Data Type" (ADT) or "User Defined Type" (UDT), and defines it as an Oracle SQL data-type as opposed to a PL/SQL user-defined type, allowing its use in both the Oracle SQL Engine and the Oracle PL/SQL engine. The constructor and methods of an Abstract Data Type are written in PL/SQL. The resulting Abstract Data Type can operate as an object class in PL/SQL. Such objects can also persist as column values in Oracle database tables. PL/SQL is fundamentally distinct from Transact-SQL, despite superficial similarities. Porting code from one to the other usually involves non-trivial work, not only due to the differences in the feature sets of the two languages, but also due to the very significant differences in the way Oracle and SQL Server deal with concurrency and locking. There are software tools available that claim to facilitate porting including Oracle Translation Scratch Editor, CEITON MSSQL/Oracle Compiler  and SwisSQL. The StepSqlite product is a PL/SQL compiler for the popular small database SQLite. PL/SQL Program Unit A PL/SQL program unit is one of the following: PL/SQL anonymous block, procedure, function, package specification, package body, trigger, type specification, type body, library. Program units are the PL/SQL source code that is compiled, developed and ultimately executed on the database. The basic unit of a PL/SQL source program is the block, which groups together related declarations and statements. A PL/SQL block is defined by the keywords DECLARE, BEGIN, EXCEPTION, and END. These keywords divide the block into a declarative part, an executable part, and an exception-handling part. The declaration section is optional and may be used to define and initialize constants and variables. If a variable is not initialized then it defaults to NULL value. The optional exception-handling part is used to handle run time errors. Only the executable part is required. A block can have a label. Package Packages are groups of conceptually linked functions, procedures, variables, PL/SQL table and record TYPE statements, constants, cursors etc. The use of packages promotes re-use of code. Packages are composed of the package specification and an optional package body. The specification is the interface to the application; it declares the types, variables, constants, exceptions, cursors, and subprograms available. The body fully defines cursors and subprograms, and so implements the specification. Two advantages of packages are: Modular approach, encapsulation/hiding of business logic, security, performance improvement, re-usability. They support object-oriented programming features like function overloading and encapsulation. Using package variables one can declare session level (scoped) variables, since variables declared in the package specification have a session scope.
Views: 69241 radhikaravikumar
Hello friends in this video we learn about that how to recover a permanent dropped table using current SCN number in Oracle database using Flashback Technology ... #RecoveryofDropTable #performingflashback By Lalit saini
Views: 2579 Oracle World
Follow this easy step by step easy tutorial to learn how to create and drop table in SQL Server via Query Editor. Don't forget to check out our site http://howtech.tv/ for more free how-to videos! http://youtube.com/ithowtovids - our feed http://www.facebook.com/howtechtv - join us on facebook https://plus.google.com/103440382717658277879 - our group in Google+ In this tutorial we will guide you on creating tables in SQL Server. As we know, the main components in databases are the tables, in which the data actually resides. Tables contain rows and columns, where columns act like the entity identifiers such as employee name, employee salary etc and rows contain the data values for those entities. So in this tutorial we will see how to create tables in SQL Server. Step 1 -- Navigating to the Desired Database Creating tables in SQL server is very easy. It can be done via commands which have to be written in the Query Editor. For that, first of all, let's move to the database where the table has to be created. Expand the Databases folders from top and further expand the required database inside which table has to be created. After that, right click on that Database and open up the Query Editor. Step 2 -- Creating Table In the Query Editor we will write the following queries: create table Inventory ( ID int, Product varchar(50), Quantity int, Price decimal (18,2) ); The query here means that we are interested to create a new table which would be called Inventory. It will have an ID column for the Product Ids and its Data type would be an Integer. It will have a column for Products containing the product names, so its data type would be Varchar. It will also contain a Quantity field with Integer set as its data type And last of all, a column for Price that will accept data as real numbers. Therefore we will declare its type as decimal and set its maximum length as 18 with a precision of 2 decimal places. After that is done, click on the Execute Button on top. A message will appear below the Query Editor that the query has been executed successfully. Step 3 -- Identifying the Table Now for verifying whether the table has been made, just click on the Tables icon and then on the Refresh Icon, located under the Object Explorer. With that done, our newly created Inventory table would appear over there. Click on the Inventory table and expand its columns. The fields would appear to be created exactly like we had mentioned in the query earlier. Step 4 -- Drop Table Now let's move on to how to drop tables in SQL. To delete a table and all of its contents, we use the DROP table command in SQL. Over here, let's drop the table we just made. For that, simply write: drop table Inventory With that done, let's execute the command. Now when we will Refresh the Object Explorer, we can see that the Inventory table has been deleted. And that was how to create table in SQL.
In this Video , We can see How to recover Dropped Object and Use of PURGE,FLASHBACK and RECYCLEBIIN..
Views: 351 Manikandan R
Hello friends in this demo i am explain about Recovery of dropped table using until time by RMAN (recovery manager). #RecoveryofDroppedTable #RMANRECOVERY #UNTILTIMERECOVERY Oracle database Unbeatable,Unbreakable Platform..
Views: 5559 Oracle World
How to drop all of the objects in a user's recycling bin ========================================================== purge recyclebin how to check the original name of dropped objects in recyclebin =============================================================== select owner,original_name,type from dba_recyclebin; select original_name,type from recyclebin; how to check view on recyclebin =================================================== select table_name from dict where table_name like '%RECYCLE%';
Views: 270 Praveen Biyyapu
Hello friends in this video I'm going to explain you how to recover the dropped tablespace using point in time recovery in oracle 11gR2 without rman backups #RecoveryofDroppedTablespace #rmanrecovery #TSPITRwithoutRMAN Oracle database Unbeatable,Unbreakable Platform..
Views: 9563 Oracle World
How to drop all objects in the recycle bin, regardless of owner in oracle database ================================================================================== purge dba_recyclebin how to check the original name of dropped objects in recyclebin =============================================================== select owner,original_name,type from dba_recyclebin; how to check view on recyclebin =================================================== select table_name from dict where table_name like '%RECYCLE%';
Views: 276 Praveen Biyyapu
TRY PRM For Oracle Database , FULL GUI supported, easy to use, written in Java cross platform . PRM can help user recover data from truncated table or corrupted database!
Views: 4474 ParnassusData Software
Creating Managing Droping Oracle Database Tablespaces select tablespace_name,block_size,status,contents,logging from dba_tablespaces; create tablespace mytbs datafile 'd:\oradata\dbrdbms\mytbs01.dbf' size 10m; alter tablespace mytbs add datafile 'd:\oradata\dbrdbms\mytbs02.dbf' size 10m; alter tablespace mytbs drop datafile 'd:\oradata\dbrdbms\mytbs02.dbf'; desc v$datafile; desc ts#,name from v$datafile; select ts#,name from v$tablespace; select v$datafile.ts#,v$datafile.name,v$tablespace.name from v$datafile,v$tablespace where v$datafile.ts#=v$tablespace.ts# and v$tablespace.name='MYTBS'; alter database datafile 'd:\oradata\dbrdbms\mytbs01.dbf' resize 20m; ALTER DATABASE DEFAULT TABLESPACE mytbs; select ts#,name from v$tablespace; select ts#,name from v$datafile; select ts#,name from v$tablespace; drop tablespace mytbs; drop tablespace mytbs ialtncluding contents and datafiles; drop tablespace mytbs including contents and datafiles cascade; alter tablespace mytbs read only; alter tablespace mytbs read write; alter tablespace mytbs force logging; alter tablespace mytbs nologging; alter tablespace mytbs flashback on; alter tablespace mytbs flashback off; purge tablespace mytbs user myuser;
Views: 21895 Abbasi Asif
Blog link: http://www.rebellionrider.com/sql-primary-key.htm SQL tutorial on Primary key / SQL Primary key, In this tutorial you will learn about simple primary key, composute primary key, how to drop primary key. defining primary key using create table and alter table along with many other things. Tool used in this tutorial is SQL Developer. This tutorial series is part of SQL expert exam certification training. if you are preparing for SQL certification you can use my tutorials. This SQL Tutorial is a part of free training. Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=j7eYO7 Contacts E-Mail [email protected] Twitter https://twitter.com/rebellionrider Instagram http://instagram.com/rebellionrider Facebook. https://www.facebook.com/imthebhardwaj Linkedin. http://in.linkedin.com/in/mannbhardwaj/ Thanks for linking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com So Primary Key There are two types of Primary keys First is Simple primary Key: Primary key which Involves only one column and Second is Composite Primary Key: Primary Key which involves more than one column. We will start with Simple primary key. You can create Primary key either with Create Table statement of by using Alter table Statement. Let's define simple primary key using create table statements. With create table statement we can either define primary key at column level or at table level. We will start with defining Primary key at column level using create table statement. You just have to put keyword Primary key after data type and size of column while defining a column of a table. Here oracle server will create a primary key on product id with default constraint name which will be slightly difficult to understand. You can give your own name to your constraint which is also a good practice.
Views: 102177 Manish Sharma
Please donate on below link if you think I am helping you with your career. https://www.paypal.me/ankushthavali OR Google Pay : 9960262955 OR Account No : 31347845762 IFSC: SBIN0012311 DATAFILE file Lost ================================ Archive log mode-Enabled create tablespace test_ts datafile '/u01/app/oracle/oradata/testdb/ts_test02.dbf' size 10M; create table testtable (id number(5))tablespace test_ts; insert into testtable (id) select * from testtable; SQL＞select count(*) from testtable; COUNT(*) ---------- - before deleting datafile 524288 SQL＞select count(*) from testtable; COUNT(*) ---------- - After recovery 524288 select tablespace_name, segment_name from dba_segments where segment_name = 'TESTTABLE'; alter system flush buffer_cache; alter database create datafile '/u01/app/oracle/oradata/testdb/ts_test02.dbf' as '/u01/app/oracle/oradata/testdb/ts_test02.dbf' alter database datafile '/u01/app/oracle/oradata/testdb/ts_test02.dbf' offline drop; alter database create datafile '/u01/app/oracle/oradata/testdb/ts_test02.dbf' as '/u01/app/oracle/oradata/testdb/ts_test02.dbf' recover datafile '/u01/app/oracle/oradata/testdb/ts_test02.dbf'; alter database datafile '/u01/app/oracle/oradata/testdb/ts_test02.dbf' online; select count(*) from TESTTABLE; =================================================== Please like,subscribe my channel. Kindly contact for online training on below contacts. Emai: [email protected] Mob No: +91 9960262955 ====================================================== Hi Folks, Greetings!! I am professional part time oracle dba trainer and having good experience in oracle database administration. This is the right place to enroll yourself for Oracle DBA real time course. Please use following email ID for more details. Don’t hesitate to WhatsApp me any time. I will give you the best training and will create path to get DBA job easily. Enjoy the free YouTube video and connect with me for deep Oracle DBA knowledge. Mobile No : + 91 9960262955 (WhatsApp Number) EmailID: [email protected] how to recover lost datafile in oracle how to recover a datafile in oracle without backup how to recover a deleted datafile in oracle 11g how to recover datafile in oracle rman restore datafile oracle missing datafile after clone how to recover system datafile in oracle without backup oracle datafile deleted accidentally
Views: 1542 ANKUSH THAVALI
------------Restore Dropped tables ---------- drop table employee; select * from dba_recyclebin; flashback table employee to before drop; --------------------------------------Purge--- drop table employee purge; purge table employee; purge recyclebin
Views: 38 Mohammad
Using ORACLE PRM-DUL recover undelete deleted records/rows from table , download prm-dul http://parnassusdata.com/
Views: 488 Maclean Liu
تعلم اوراكل حتى الاحتراف تعلم اوراكل من الصفر
Views: 1710 khaled alkhudari
Oracle tutorial : Recover deleted rows in Oracle using flashback oracle tutorial for beginners oracle recover deleted rows In this video, we have used as of timestamp concept of oracle. Example : select * from table as of timestamp(systimestamp-interval '1'minute ) Subscribe on youtube: https://www.youtube.com/channel/UCpiyAesWNYOXSz5GPq8lbkA For more tutorial please visit #techquerypond https://techquerypond.com https://techquerypond.wordpress.com https://twitter.com/techquerypond sql in recovery recover deleted rows
Views: 1791 Tech Query Pond
In this demonstration, we will show how quick and easy it is to restore dropped tables in Microsoft SQL Server using Ontrack PowerControls for SQL. Granular restoration that once took hours now only takes minutes!
Views: 2935 Ontrack UK
MD.Rahim Uddin Shohag Founder - Oracle Bangla https://www.oraclebangla.com/ fb :: https://www.facebook.com/oracle.shohag email: [email protected] Recovery Deleted Row in Oracle using Flashback Query ============================================ i'm show you how to recovery Deleted row in oracle database following Step :: ================== /* FLASHBACK QUERY NO NEED DBA */ CREATE TABLE DEMO_CUSTOMER ( CUST_ID NUMBER CONSTRAINT DEMO_CUSPRIMARY PRIMARY KEY, CUST_NAME VARCHAR2(100 BYTE), CUST_ADDRESS VARCHAR2(200 BYTE), CUST_PHONE VARCHAR2(15 BYTE), CUST_WEBSITE VARCHAR2(100 BYTE), CREATE_DATE DATE DEFAULT SYSDATE ); SELECT SYSDATE FROM DUAL; --------------- INSERT RECORD --------- INSERT INTO DEMO_CUSTOMER VALUES(100,'SHOHAG','DHAKA','121212','www.oraclebangla.com',SYSDATE); INSERT INTO DEMO_CUSTOMER VALUES(101,'RAHIM','Feni','121212','www.google.com',SYSDATE); INSERT INTO DEMO_CUSTOMER VALUES(103,'Rubel','karwan bazar','121343','www.obn.com',SYSDATE); INSERT INTO DEMO_CUSTOMER VALUES(104,'Karim','DHAKA','1212432','www.OCA.com',SYSDATE); COMMIT; SELECT * FROM DEMO_CUSTOMER; SELECT COUNT(*) FROM DEMO_CUSTOMER SELECT SYSDATE FROM DUAL; ---- AFTER FEW MINUTE -------- DELETE FROM DEMO_CUSTOMER WHERE CUST_ID = 100; DELETE FROM DEMO_CUSTOMER WHERE CUST_ID = 101; DELETE FROM DEMO_CUSTOMER WHERE CUST_ID = 103; COMMIT; SELECT * FROM DEMO_CUSTOMER; SELECT COUNT(*) FROM DEMO_CUSTOMER -----Way No 1 AFTER 1 MINIUTE ---------- SELECT * FROM DEMO_CUSTOMER AS OF TIMESTAMP (SYSTIMESTAMP -INTERVAL '1' MINUTE) ; SELECT COUNT(*) FROM DEMO_CUSTOMER; SELECT * FROM DEMO_CUSTOMER; /* IF SPECIFIC TIME FINDE DATA HISTORY */ ---- why no 2 SELECT * FROM DEMO_CUSTOMER AS OF TIMESTAMP TO_TIMESTAMP('21-02-2018 04:24:40 PM','DD-MM-RRRR HH:MI:SS AM'); ---============== recovery data ============= SELECT * FROM DEMO_CUSTOMER; --------------------------- SPECIFIC DATA RECOVERY -------------------------- SELECT * FROM DEMO_CUSTOMER AS OF TIMESTAMP (SYSTIMESTAMP -INTERVAL '2' MINUTE); INSERT INTO DEMO_CUSTOMER (SELECT * FROM DEMO_CUSTOMER AS OF TIMESTAMP (SYSTIMESTAMP -INTERVAL '2' MINUTE) WHERE CUST_ID = 101); COMMIT; SELECT * FROM DEMO_CUSTOMER; --- RECOVERY SINGEL RECORD FLASHBACK 2ND WAY SELECT * FROM DEMO_CUSTOMER AS OF TIMESTAMP TO_TIMESTAMP('21-02-2018 04:24:40 PM','DD-MM-RRRR HH:MI:SS AM'); INSERT INTO DEMO_CUSTOMER ( SELECT * FROM DEMO_CUSTOMER AS OF TIMESTAMP TO_TIMESTAMP('21-02-2018 04:24:40 PM','DD-MM-RRRR HH:MI:SS AM') WHERE CUST_ID = 100 ); COMMIT; SELECT * FROM DEMO_CUSTOMER; ---IF YOU RECOVERY DATA ALL DELETE RECORD JUST SIMPLE TECHNIC ----- SELECT * FROM DEMO_CUSTOMER AS OF TIMESTAMP TO_TIMESTAMP('21-02-2018 04:24:40 PM','DD-MM-RRRR HH:MI:SS AM') MINUS SELECT * FROM DEMO_CUSTOMER INSERT INTO DEMO_CUSTOMER( SELECT * FROM DEMO_CUSTOMER AS OF TIMESTAMP TO_TIMESTAMP('21-02-2018 04:24:40 PM','DD-MM-RRRR HH:MI:SS AM') MINUS SELECT * FROM DEMO_CUSTOMER); COMMIT; SELECT * FROM DEMO_CUSTOMER; SELECT COUNT(*) FROM DEMO_CUSTOMER; ------ IF YOU UPDATE RECORD FLASHBACK QUERY CHECK --- UPDATE DEMO_CUSTOMER SET CUST_NAME = 'Oracle' WHERE cust_id = 104; commit; SELECT * FROM DEMO_CUSTOMER; SELECT * FROM DEMO_CUSTOMER AS OF TIMESTAMP TO_TIMESTAMP('21-02-2018 04:24:40 PM','DD-MM-RRRR HH:MI:SS AM') WHERE CUST_ID = 104 SELECT * FROM DEMO_CUSTOMER AS OF TIMESTAMP TO_TIMESTAMP('21-02-2018 04:30:00 PM','DD-MM-RRRR HH:MI:SS AM') WHERE CUST_ID = 104
Views: 852 Oracle Bangla
Learn how to create a DDL Trigger in Oracle Database with Schema Auditing Example where we will learn how to keep an any on which object is created, altered or drop and by who. Manish Sharma From RebellionRider ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog : http://bit.ly/DDL-Trigger Previous Tutorial ►PL/SQL Tut 14 Triggers Introduction https://youtu.be/R3fvX_xf5P4 ► PL/SQL Tut 17 Table Backup Using DML Trigger https://youtu.be/jSv1LIlNKU0 ------------------------------------------------------------------------- ►►►Let's Get Free Uber Cab◄◄◄ Use Referral Code UberRebellionRider and get $20 free for your first ride. ------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider https://www.facebook.com/imthebhardwaj http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ http://rebellionrider.tumblr.com/ http://www.pinterest.com/rebellionrider/ You can also Email me at for E-mail address please check About section Please please LIKE and SHARE my videos it makes me happy. Thanks for liking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ♥ I LOVE ALL MY VIEWERS AND SUBSCRIBERS
Views: 47396 Manish Sharma
How to drop an object, and then recover it from the Oracle recycle bin ========================================================== select base_object from recyclebin; flashback table tablename to before drop; create table ============= create table fish as select * from tab; insert data into table ====================== insert into fish select * from tab; insert into fish select * from fish; drop table =========== drop table fish; how to recover it from recyclebin ================================== flashback table fish to before drop;
Views: 260 Praveen Biyyapu
Oracle 12c introduced a new feature on RMAN ie 'Recover Table' ,which helps in recovering a dropped table using RMAN . In this video we through the detailed explanation of this new feature. This video is the part of our RMAN elearning video course . Please visit www.wysheid.com for more deails
Views: 1442 Wysheid Wysheid
SQL Server / TSQL Tutorial Scenario: How to Generate Drop Table Statement for all the tables in a database You are working as SQL Server developer in Credit Card Company. You need to generate Drop Table statements for all the tables in Database TechBrothersIT that you are using as Staging for Data Loading process. How would you do that? Link to scripts used in the video http://www.techbrothersit.com/2016/02/how-to-generate-drop-table-statement.html Check out our website for Different SQL Server, MSBI tutorials and interview questions such as SQL Server Reporting Services(SSRS) Tutorial SQL Server Integration Services(SSIS) Tutorial SQL Server DBA Tutorial SQL Server / TSQL Tutorial ( Beginner to Advance) http://www.techbrothersit.com/
Views: 2206 TechBrothersIT
SQL TUTORIAL IN SHORT
Views: 252 TUTORIALS IN SHORT
How to delete a specific database object from the recycle bin in oracle database ========================================================== purge table schema.tablename; (dba using sys user) purge table tablename (user) how to check the original name of dropped objects in recyclebin =============================================================== select owner,original_name,type from dba_recyclebin; select original_name,type from recyclebin; how to check view on recyclebin =================================================== select table_name from dict where table_name like '%RECYCLE%';
Views: 307 Praveen Biyyapu
By Vivek Saxena Insa Shabad Coachings Shamli Recovering a droped table with the help of active redo log archives means in archive mode. Set time on Shut immediate Taking cold backup Startup Create table vivek(rn number) tablespace vivek1; Insert into vivek1 values(1); / Many times Commit; Select * from vivek1; Drop table vivek1; Archive log list // Show automatic archival enabled Alter system switch logfile; / Many times Shut immediate // Now replace database data folder by old backup data folder Startup mount // Now Recover database until time just before table deletion Recover database until time '2010-07-30:20:08:13' ; // Now specify log Auto Alter database open resetlogs ; Select * from vivek1;
Views: 55 Shabad(शब्द) Coachings
How To Flashback a Table to particular SCN in Oracle
Views: 5955 Abbasi Asif
Hello friends in this scenario i have explain about flashback version query in oracle database flashback version query is provide analysis of sql statement b/w different of time. #performFlashback #Oracledatabase #FlashbackVersionQuery By lalit saini
Views: 2034 Oracle World
So far, we have this table declaration: CREATE TABLE users( user_id NUMBER, username VARCHAR(50 CHAR) first_name VARCHAR2(50 CHAR), last_name VARCHAR2(50 CHAR) ) We can run this command see that it works. As we are learning though, we are going to want to be able to recreate our table with different settings and such, but if you try to run this command, it will complain that the table already exists. So we first need to delete this table before we start editing settings. When we get more experienced, we will learn about ways to edit the structure of a table that already exists. To fix this, we can get rid of the table using the DROP TABLE command: DROP TABLE users You can run this every time if you need to practice by adding a semicolon after it. This is how you can tell Oracle that you are putting in another command after it. This is known as a delimiter. When you run the script, it is going to run both commands. Now we can go through and reconsider our table structure. This is fine for starting out because we don't have any important data in our database, but once your database is in production you are not going to want to just drop tables. In the last video we discussed different constraints that you can apply to columns in a database table, but how do you actually apply these when you are creating a table? The first way you define constraints is to put them right after the column in your CREATE TABLE statement. CREATE TABLE users( username VARCHAR2(50 CHAR) NOT NULL ) When we define constraints this way, we usually say we are adding column attributes. If you have two constraints you want to add, you just put one after the other with spaces in between. There is no particular order that is required. CREATE TABLE users( username VARCHAR2(50 CHAR) NOT NULL UNIQUE ) In this situation we have already given the column the NOT NULL and UNIQUE attributes, so we should consider making this a primary key: CREATE TABLE users( username VARCHAR2(50 CHAR) PRIMARY KEY ) As you can see, adding column attributes is super easy. We can add a default like this: CREATE TABLE users( username VARCHAR2(50 CHAR) PRIMARY KEY, account_balance NUMBER DEFAULT 0 ) Note that now we need the comma after the first row. There are a few constraints we did not talk go through an example, specifically foreign keys and check constraints. We will be adding these constraints to our database in future videos. In the mean time, I have a thought for you… Many people prefer to name their column constraints. That way, we can refer to certain constraints by name. For example, we might have a primary key constraint that could be named users_pk. The way we are creating these constraints does not allow for this feature, so in the next video we are going to be discussing different ways to create constraints. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Support me on Patreon! http://www.patreon.com/calebcurry Subscribe to my newsletter: http://bit.ly/JoinCCNewsletter Donate!: http://bit.ly/DonateCTVM2. ~~~~~~~~~~~~~~~Additional Links~~~~~~~~~~~~~~~ More content: http://CalebCurry.com Facebook: http://www.facebook.com/CalebTheVideoMaker Google+: https://plus.google.com/+CalebTheVideoMaker2 Twitter: http://twitter.com/calebCurry Amazing Web Hosting - http://bit.ly/ccbluehost (The best web hosting for a cheap price!)
Views: 22610 Caleb Curry
Please Subscribe Channel Like, Share and Comment Visit : www.geekyshows.com
Views: 8218 Geeky Shows
In this tutorial we'll learn to use the INSERT Query to copy data from one table into another.
Views: 258721 The Bad Tutorials
Hi... Friends in This Video We learn How To Recover Drop Table Using RESTORE POINT
Views: 76 PGT POINT
Text version of the video http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-table-name-variable.html Slides http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-table-name-variable_20.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All SQL Server Tutorial Videos https://www.youtube.com/playlist?list=PL08903FB7ACA1C2FB All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists In this video we will discuss how to pass table name dynamically for stored procedure in sql server. This is one of the sql questions that is very commonly asked. I have a web page with a textbox. When I enter a table name in the textbox and when I click "Load Data" button, we want to retrieve data from that respective table and display it on the page. Copy the SQL Script to create the tables from my blog using the link below http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-table-name-variable.html Create the following stored procedure. Notice we are passing table name as a parameter to the stored prcoedure. In the body of the stored procedure we are concatenating strings to build our dynamic sql statement. In our previous videos we discussed that this open doors for SQL injection. Create procedure spDynamicTableName @TableName nvarchar(100) As Begin Declare @sql nvarchar(max) Set @sql = 'Select * from ' + @TableName Execute sp_executesql @sql End So the obvious question that comes to our mind is, why are we not creating parameterised sql statement instead. The answers is we can't. SQL Server does not allow table names and column names to be passed as parameters. Notice in the example below, we are creating a parameterised query with @TabName as a parameter. When we execute the following code, the procedure gets created successfully. Create procedure spDynamicTableName1 @TableName nvarchar(100) As Begin Declare @sql nvarchar(max) Set @sql = 'Select * from @TabName' Execute sp_executesql @sql, N'@TabName nvarchar(100)', @TabName = @TableName End But when we try to execute it we get an error - Must declare the table variable "@TabName" Execute spDynamicTableName1 N'Countries' Add a Web Page to the project that we have been working with in our previous video. Name it "DynamicTableName.aspx". Copy and paste the HTML from my blog using the link below http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-table-name-variable.html Copy and paste the code from my blog in the code-behind page http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-table-name-variable.html At this point, run the application and type the following text in the "Table Name" textbox and click "Load Data" button. Notice "SalesDB" database is dropped. Our application is prone to SQL injection as we have implemented dynamic sql in our stored procedure by concatenating strings instead of using parameters. Employees; Drop database SalesDB One way to prevent SQL injection in this case is by using SQL Server built-in function - QUOTENAME(). We will discuss QUOTENAME() function in detail in our next video. For now understand that by default, this function wraps that string that is passed to it in a pair of brackets. SELECT QUOTENAME('Employees') returns [Employees] Modify the stored procedure to use QUOTENAME() function as shown below. Alter procedure spDynamicTableName @TableName nvarchar(100) As Begin Declare @sql nvarchar(max) Set @sql = 'Select * from ' + QUOTENAME(@TableName) Execute sp_executesql @sql End At this point, type the following text in the "Table Name" textbox and click "Load Data" button. Notice you will see a message - Invalid object name 'Employees; Drop database SalesDB'. Also "SalesDB" database is not dropped. Employees; Drop database SalesDB The entire text in "Table Name" textbox is wrapped in a pair of brackets by the QUOTENAME function and is treated as table name. Since we do have a table with the specified name, we get the error - Invalid object name.
Views: 26975 kudvenkat
Hi welcome in my oracle world in this video im explaining about flashback query at the specified point in time in Oracle database Unbeatable,Unbreakable Platform.. #performFlashback #Oracledatabase #FlashbackQuery By lalit saini
Views: 2117 Oracle World
Hello friends in this demo we learn about how to perform a flashback point in time recovery on table in Oracle database,one important thing is that flashback not supported on SYS user objects... #performingflashback #FlashbackTablePointintimeRecovery By Lalit Saini
Views: 3447 Oracle World
This tutorial is all about Sequence In Oracle Database. In this SQL Tutorial you will learn How to create a sequence How to populate a Primary key column (auto increment in Oracle) using Sequence How to drop a sequence ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog : http://bit.ly/sql-sequence-in-oracle-database-rebellionrider-manish-sharma Previous Tutorial ► How To Insert Data into Table using SQL Developer http://youtu.be/YYQCSV6MzTk ► INSERT INTO Command http://youtu.be/uQXgqFtxI_k ► How to copy /Insert data into a table from another table http://youtu.be/m3Ep8tAMqok ------------------------------------------------------------------------- ►►►Help Me In Getting A Job◄◄◄ ►Help Me In Getting A Good Job By Connecting With Me on My LinkedIn and Endorsing My Skills. All My Contact Info is Down Below. You Can Also Refer Me To Your Company Thanks ------------------------------------------------------------------------- Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=kb4rc1 -------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! -------------------------------------------------------------------------- Amazon Wishlist: http://bit.ly/wishlist-amazon ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider https://www.facebook.com/imthebhardwaj http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ http://rebellionrider.tumblr.com/ http://www.pinterest.com/rebellionrider/ You can also Email me at for E-mail address please check About section Please please LIKE and SHARE my videos it makes me happy. Thanks for liking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ♥ I LOVE ALL MY VIEWERS AND SUBSCRIBERS
Views: 44452 Manish Sharma
Learn Database Export and Import using MySQL Workbench. Open MySQL Workbench and logged in to MySQL database server using 'root' username and password. In previous couple of videos we learned how to Create, Alter, Drop Databases and Tables and also how to Insert, Read, Update, Delete data rows using MySQL Workbench. In this lecture we will learn how to Export and Import the database using MySQL Workbench. First of all to Export the databases or tables, from top menu 'Server' select 'Data Export' Option, which opens a new window of data export settings and options. The left section on the window displays all the existing databases on our MySQL database server. When we select a database by clicking on it, it displays all the respected tables under the selected database. We can select one or multiple database check-boxes to include the database in the Export file. Under 'Export Options' section, You can change the default export path of you choice. I'll keep the default one. By selecting first option that is 'Export to Dump Project Folder'. MySQL Workbench will save the save all tables as separate SQL file under one folder. Which is useful when you will be importing or restoring the export file one by one table. I'll go ahead quickly and first save as 'Export to Dump Project Folder', MySQL Workbench displays the progress bar and log. Now, I'll again export the database using 'Export to Self-contained File' option. To demonstrate the import first I'll delete the existing 'students' table under 'mytestdb' database. Display database details by clicking on 'i' symbol, select 'tables' tab. Select and right click 'students' table, and click 'Drop Table' option, confirm and delete the table. Click 'refresh' to update the tables section and we have no table in our 'mytestdb' database. Now select the database and from 'data import' window, select 'import from dump folder. 'Load folder contents' and select only 'mytestdb' database and click start import button to import 'students' table again. Go to 'mytestdb' database information window again and click 'refresh' button to reload table list again. and the 'students' table is back. Check out the whole playlist of MySQL Workbench Introduction Tutorials or Individual video from the following links, MySQL Workbench Tutorial: Introduction to MySQL Workbench for Beginners Playlist https://www.youtube.com/watch?v=aGQ7PGZ1u24&list=PLhwzZMYRiUEq5e5TJCznKVuPAsnNzT8k5 MySQL Workbench: Understand What is MySQL Workbench? https://www.youtube.com/watch?v=aGQ7PGZ1u24 MySQL Workbench Add User and Connect to Database https://www.youtube.com/watch?v=P7whjxMqYU4 MySQL Workbench Create, Alter, Drop Database https://www.youtube.com/watch?v=1qzE6SN8AZU MySQL Workbench Create, Alter, Drop Table https://www.youtube.com/watch?v=luBmETAk30k MySQL Workbench Insert, Read, Update, Delete Data Rows https://www.youtube.com/watch?v=qb7abQ6ROy4 MySQL Workbench Database Export and Import https://www.youtube.com/watch?v=Jvul-wr-_Bg Subscribe to my channel: https://www.youtube.com/channel/UCvrq9OowoORTV5Gs_jpADhw
Views: 125007 PnTutorials by Pradnyankur Nikam
In this video we cover in much more detail the improvement in performance that can be achieved by using partitioning. MS SQL server databases can scale well using this feature. We cover how partitioning a table gives similar performance as a single table with a clustered index, we then explore how adding NC index improve performance of the heap table as well as the partitioned table.
Views: 19459 Jayanth Kurup
Let's think about a database that we use for our ETL process and we call that database staging. We want to truncate all the tables in morning so those can be used for the daily process. Once way is to write our Truncate statement for each of the table but tables can be dropped or new tables can be created as well. We want to write a query that we can be use to Truncate all the tables from a database and we don't have to rewrite our Truncate statements. If the tables do not have Primary Key -Foreign Key relationship, we can use Truncate. But we often have tables which are referenced by other tables. We can not use Truncate statement for those tables. The only way to Truncate those tables is to drop the Foreign Key Constraint before Truncating and then Truncate and Recreate Relationship after that. The below Code can be used to Truncate all the tables from the database. If Tables will have the Pk-Fk relationship, The script will drop the Foreign Key Constraints first and then Truncate those tables and finally recreate the Foreign Key constraints. Before you run below Script, Make sure you are pointing to correct Database and Server! All the best with Truncating all the tables from a SQL Server Database. Link to Blog for Script used in this video http://sqlage.blogspot.com/2015/02/truncate-all-tables-in-database-in-sql.html visit our website for more technology tutorials www.techbrothersit.com
Views: 33726 TechBrothersIT