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SQLITESTUDIO RENAME TABLE HOW TO
SQLITESTUDIO RENAME TABLE SERIAL
SQLITESTUDIO RENAME TABLE CODE

To drop a column, you need to use the steps above. SQLite does not support ALTER TABLE DROP COLUMN statement.

SQLITESTUDIO RENAME TABLE CODE

enable foreign key constraint check PRAGMA foreign_keys= on Code language: SQL (Structured Query Language) ( sql ) SQLite ALTER TABLE DROP COLUMN example rename the new_table to the table ALTER TABLE new_table RENAME TO table

copy data from the table to the new_table INSERT INTO new_table(column_list) Here you can drop column CREATE TABLE IF NOT EXISTS new_table( The following script illustrates the steps above: - disable foreign key constraint check PRAGMA foreign_keys= off If you want to perform other actions e.g., drop a column, you use the following steps: Using SQLite ALTER TABLE for other actions

SQLITESTUDIO RENAME TABLE HOW TO

The following shows the syntax of the ALTER TABLE RENAME COLUMN statement: ALTER TABLE table_nameįor more information on how to rename a column, check it out the renaming column tutorial. SQLite added the support for renaming a column using ALTER TABLE RENAME COLUMN statement in version 3.20.0

Try It Using SQLite ALTER TABLE to rename a column

If the new column is a foreign key and the foreign key constraint check is enabled, the new column must accept a default value NULL.įor example, you can add a new column named location to the equipment table: ALTER TABLE equipmentĪDD COLUMN location text Code language: SQL (Structured Query Language) ( sql ).

The new column cannot have a default of CURRENT_TIMESTAMP, CURRENT_DATE, and CURRENT_TIME, or an expression.

If the new column has a NOT NULL constraint, you must specify a default value for the column other than a NULL value.

The new column cannot have a UNIQUE or PRIMARY KEY constraint.

There are some restrictions on the new column: The following illustrates the syntax of ALTER TABLE ADD COLUMN statement: ALTER TABLE table_nameĪDD COLUMN column_definition Code language: SQL (Structured Query Language) ( sql ) In this scenario, SQLite appends the new column at the end of the existing column list. You can use the SQLite ALTER TABLE statement to add a new column to an existing table. Try It Using SQLite ALTER TABLE to add a new column to a table SELECT name,Įquipment Code language: SQL (Structured Query Language) ( sql ) Third, query data from the equipment table to verify the RENAME operation. RENAME TO equipment Code language: SQL (Structured Query Language) ( sql ) Second, use the ALTER TABLE RENAME TO statement to change the devices table to equipment table as follows: ALTER TABLE devices VALUES( 'HP ZBook 17 G3 Mobile Workstation', 'ZBook', 'SN-2015') Code language: SQL (Structured Query Language) ( sql ) INSERT INTO devices ( name, model, serial)

SQLITESTUDIO RENAME TABLE SERIAL

Let’s take an example of renaming a table.įirst, create a table named devices that has three columns: name, model, serial and insert a new row into the devices table.

If a table is referenced by views or statements in triggers, you must manually change the definition of views and triggers.

The database objects such as indexes and triggers associated with the table will be associated with the new table.You cannot use it to move the table between the attached databases. The ALTER TABLE only renames a table within a database.These are important points you should know before you rename a table: RENAME TO new_table Code language: SQL (Structured Query Language) ( sql ) To rename a table, you use the following ALTER TABLE RENAME TO statement: ALTER TABLE existing_table Using SQLite ALTER TABLE to rename a table Rename a column (added supported in version 3.20.0).Unlike SQL-standard and other database systems, SQLite supports a very limited functionality of the ALTER TABLE statement.īy using an SQLite ALTER TABLE statement, you can perform two actions: Summary: in this tutorial, you will learn how to use SQLite ALTER TABLE statement to change the structure of an existing table.