To rename a table in PostgreSQL, run the ALTER TABLE statement (in the same way as MySQL and Oracle): ALTER TABLE old_name RENAME TO new_name; You substitute in the old name or the current name of the table, and the new name of the table, then run the command. For example, to ...
What is the SQL ALTER Command? TheALTER command in SQLis a powerful tool that allows you to change the structure of existing database objects without affecting the data they contain. The command can be used to modify table columns, constraints, indexes, and more. Modifying Table Structure Addi...
For example, OBJECT could be used to rename objects including constraints (CHECK, FOREIGN KEY, PRIMARY/UNIQUE KEY), user tables, and rules. STATISTICS Applies to: SQL Server 2012 (11.x) and later and Azure SQL Database.Statistics created explicitly by a user or created implicitly with an ...
SQL CREATESTATISTICSContactMail1ONPerson.Person (BusinessEntityID, EmailPromotion)WITHSAMPLE5PERCENT; EXEC sp_rename 'Person.Person.ContactMail1', 'NewContact','Statistics'; Examples: Azure Synapse Analytics G. Rename a column The following example renames thec1column in thetable1table tocol1. ...
A convenient way to rename tables in Oracle is to use the RENAME command. For example, SQL> create table kaleyc.drop_me 2 ( 3 x char 4 ); Table KALEYC.DROP_ME created. SQL> rename drop_me to drop_me2; Table renamed. However, if the object that you’re trying to rename does no...
To do this in SQL, we specify that we want to change the structure of the table using the ALTER TABLE command, followed by a command that tells the relational database that we want to rename the column. The exact syntax for each database is as follows: In MySQL, the SQL syntax for...
hivesqlrename列名 hive rename table 二、HIVE 基本操作 2.1 create table 总述 CREATE TABLE 创建一个指定名字的表。如果相同名字的表已经存在,则抛出异常;用户可以用 IF NOT EXIST 选项来忽略这个异常。 EXTERNAL 关键字可以让用户创建一个外部表,在建表的同时指定一个指向实际数据的路径(LOCATION)。
ExampleFollowing is the SQL command in SQL Server to rename the database testDB to tutorialsDB:ALTER DATABASE testDB MODIFY NAME = tutorialsDB ; Advertisement - This is a modal window. No compatible source was found for this media.Rename Database using Dump and Reimport...
You must manually modify any objects that reference the renamed table. For example, if you rename a table and that table is referenced in a trigger, you must modify the trigger to reflect the new table name. Usesys.sql_expression_dependenciesto list dependencies on the table before renaming ...
The command to create non-unique index in Oracle is as follows: CREATE INDEX OLYMPIC_GAMES.UK_TICKET_PRICE ON OLYMPIC_GAMES.TICKET (PRICE); To illustrate the execution of commands, we’ll use dbForge Studio for Oracle. A part of this software IDE is a multi-functionalPL/SQL Code editorth...