Adds columns to ... from an existing table. 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 ...

You can update one or more rows of a table through a view, with some restrictions. See Updating PROC SQL and SAS/ACCESS Views. Any column that is not modified retains its original values, except in ...

ALTER TABLE column_constraint specifies ... Is a constraint that enforces entity integrity for a specified column or columns by using a unique index. Only one PRIMARY KEY constraint can be created for ...

Adding a new column 'email' to tbl_reg1 with unique constraint, placed at the beginning ALTER TABLE tbl_reg1 ADD email VARCHAR(100) UNIQUE FIRST; -- Adding a new column 'phone' to tbl_reg1 with not ...

It is a common requirement in SQL server development ... N rows we are updating. 2) Using CTE ;WITH CTE AS ( SELECT TOP 100 * FROM Table1 ORDER BY F2 ) UPDATE CTE SET field1=1 In the above query we ...

Please note in the current preview of SQL Server 2019 (CTP 2.1), in-place encryption is only supported when using ALTER TABLE ALTER COLUMN. SSMS and PowerShell will be updated later to take advantage ...