CREATE TABLE MyTableįor more information, see CREATE TABLE (Transact-SQL) in the SQL Server documentation. The following example creates a table with an additional index. CREATE TABLE MyTableĬol1 INT NOT NULL PRIMARY KEY IDENTITY (1,1),Ĭol2 VARCHAR(20) NOT NULL CHECK (Col2 ''), The following example creates a table with column constraints and an identity. The following example creates a basic table. To maintain this functionality, add customer logic, potentially in the form of a trigger. AWS SCT raises the following error: 706 - Unsupported data type … of variable/column was replaced. Note that when you migrate to Amazon Aurora MySQL-Compatible Edition (Aurora MySQL) using AWS Schema Conversion Tool (AWS SCT), neither ROWVERSION nor TIMESTAMP are supported. The client can then apply different processing logic. If they are different, the row has been modified since the client read it. Clients read the row, process it, and check the ROWVERSION value against the current row in the table before modifying it. The auto-enumerator generates unique eight-byte binary numbers typically used to version-stamp table rows. Previously, you could use either the TIMESTAMP or the ROWVERSION keywords to denote a special data type that exposes an auto-enumerator. For more information, see Deprecated Database Engine Features in SQL Server 2008 R2 in the SQL Server documentation. The TIMESTAMP syntax synonym for ROWVERSION has been deprecated as of SQL Server 2008 R2.
TIMESTAMP Syntax for ROWVERSION Deprecated Syntax Even a straight forward statement such as SELECT * INTO FROM doesn’t copy constraints, keys, indexes, identity property, default values, or any other related objects. When creating a new table using SELECT INTO, the only attributes created for the new table are column names, column order, and the data types of the expressions. The simplified syntax for SELECT INTO is: SELECT SELECT INTO is a combination of DML and DDL. A SELECT statement that returns a valid set with unique column names can be used to create a new table and populate data. In SQL Server, you can create new tables based on SELECT queries as an alternate to the CREATE TABLE statement. They use a nonstandard CREATE TABLE syntax.Ĭreating a Table Based on an Existing Table or Query Memory-Optimized tables are special types of tables used by the In-Memory Online Transaction Processing (OLTP) engine. They are visible only to the run scope where they were created. Table variables are defined with the DECLARE statement, not with CREATE TABLE. They are similar in scope to temporary tables, but are also visible to concurrent scopes. Global temporary tables are designated by the # prefix. Temporary tables are cleaned up by the server when the run scope terminates and when the server restarts.
Temporary tables are persisted in TempDB and are visible to the run scope where they were created and any sub-scope. Temporary tables are designated with the # prefix. Standard tables are created on disk, globally visible, and persist through connection resets and server restarts.
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