Alter table rename

See ALTER TABLE statement for more information. The RENAME TABLE statement is not allowed if there are any open cursors that reference the table that is being altered. Parent topic: RENAME statements. This SQL tutorial explains how to use the SQL ALTER TABLE statement to add a column, modify a column, drop a column, rename a column or rename a table (with lots of clear, concise examples).

Sometimes we may want to rename our table to give it a more relevant name.

For this purpose we can use ALTER TABLE to rename the name of table. Syntax may vary in different databases. Like RENAME TABLE , ALTER TABLE. RENAME can also be used to move a table to a different database.

Regardless of the statement use if the rename operation would move the table to a database located on a different file system, the success of the outcome is platform specific and depends on the underlying. Keep in mind that when renaming a table , you almost certainly want to also rename any references to that table that may exist in stored procedures, views, functions, etc. Or you can use a script that finds a given string in all these objects, and paste them as ALTER statements, and do a find-and-replace, then run them all.

The ALTER TABLE statement is used to ad delete, or modify columns in an existing table. In this case, if the table_name does not exist, PostgreSQL will issue a notice instead. To do this in SQL, we specify that we want to change the structure of the table using the ALTER TABLE comman followed by a command that tells the relational database that we want to rename the column.

If a table is referenced by a stored procedure, adding or dropping a column is not allowed. You must first drop the stored procedure before you run the ALTER TABLE comman and then re-create the stored procedure after the table is altered. The column name is changed both within the table definition itself and also within all indexes, triggers, and views that reference the column. The RENAME COLUMN TO syntax changes the column-name of table table -name into new-column-name. If the column name change would result in a semantic ambiguity in a trigger or.

An ALTER TABLE ALTER COLUMN statement might not be processed in the same unit of work as a data change statement. A column cannot be altered if any of the following conditions are true:. The name must not identify a column that already exists in the table , or the name of a period that exists in the table. You cannot rename a column if any of.

Requires ALTER permission on the object. In Object Explorer, connect to an instance of Database Engine. In the RENAME table statement: First, specify the name of the existing table which you want to rename.

Secon specify the new table name.

The new name must not be the same as another table in the same schema. Note that you cannot roll back a RENAME statement once you executed it. RENAME TABLE works for views, except that views cannot be renamed into a different database.

Any privileges granted specifically for a renamed table or view are not migrated to the new name. To rename TEMPORARY tables, RENAME TABLE does not work. They must be changed manually. If the operation cannot obtain an O lock on the target table , Vertica tries to close any internal Tuple Mover sessions that are running on that table.

If successful, the operation can proceed. Explicit Tuple Mover operations that are running in user sessions do not close. Summary: in this tutorial, you will learn how to use SQLite ALTER TABLE statement to change the structure of an existing table. Unlike SQL-standard and other database systems, SQLite supports a very limited functionality of the ALTER TABLE statement. By using an SQLite ALTER TABLE statement, you can perform two actions:.

Uses of Netezza Alter Table Command. The main use of the alter table command is to alter the table structure. However, you can use the RENAME= data set option with the CREATE TABLE or SELECT statement. For more information on the RENAME= data set option, see the section on SAS data set options in SAS Language Reference: Dictionary. Introduction to PostgreSQL RENAME COLUMN clause.

SQL Rename table using Transact SQL. SQL Server does not have any statement that directly renames a table. However, it does provide you with a stored procedure named sp_ rename that allows you to change the name of a table.