* [`ADD`](/sql-statements/sql-statement-add-index.md)，[`DROP`](/sql-statements/sql-statement-drop-index.md)，或 [`RENAME`](/sql-statements/sql-statement-rename ...

Restriction: You cannot use any type of view in an ALTER TABLE statement. Restriction: You cannot use ALTER TABLE on a table that is accessed via an engine that does not support UPDATE processing.

You can modify or drop a check constraint in SQL using the ALTER TABLE statement. To modify a check constraint, you need to drop the existing one and create a new one with the updated condition.

table name, etc.). Commonly used DDL in SQL querying are CREATE, ALTER, DROP, and TRUNCATE. The mandatory semi-colon at the end of the statement is used to process every command before it. In this ...

A database consists of one or more tables. A table is identified by its name. A table is made up of columns and rows. Columns contain the column name and data type. Rows contain the records or data ...

The ALTER TABLE ... COMPACT statement allows you to initiate compaction for a specific table immediately, without waiting until compaction is triggered in the background. The execution of this ...