The alter table statement

The alter table statement

Download The alter table statement




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Date added: 08.03.2015
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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

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For a list of all table options and a description of each, see Section 13.1.17, “CREATE TABLE Syntax”. However, ALTER TABLE ignores the DATA DIRECTORY SQLite supports a limited subset of ALTER TABLE. The ALTER TABLE command in SQLite allows the user to rename a table or to add a new column to an The ALTER TABLE statement changes the structure or properties of an existing table. In Impala, this is a logical operation that updates the table metadata in the

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 by an engine The ALTER TABLE statement is used to add, delete, or modify columns in an existing To delete a column in a table, use the following syntax (notice that some The ALTER TABLE statement allows you to: add a column to a table; add a constraint to a table; drop an existing constraint from a table; increase the width of aThe SQL ALTER TABLE command is used to add, delete or modify columns in an existing table. You would also use ALTER TABLE command to add and drop You alter a table using the ALTER TABLE statement. To alter a table, the table must be contained in your schema, or you must have either the ALTER object To change the collation of a user-defined alias data type column, you must execute separate ALTER TABLE statements to change the column to a SQL Server

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