I'm trying to programmatically add an identity column to a table Employees. Not sure what I'm doing wrong with my syntax.
Alter Table Add Column With Identity
ALTER TABLE EmployeesADD COLUMN EmployeeID int NOT NULL IDENTITY (1, 1)ALTER TABLE Employees ADD CONSTRAINTPKEmployees PRIMARY KEY CLUSTERED(EmployeeID) WITH( STATISTICSNORECOMPUTE = OFF, IGNOREDUPKEY = OFF,ALLOWROWLOCKS = ON, ALLOWPAGELOCKS = ON) ON PRIMARYWhat am I doing wrong? I tried to export the script, but SQL Mgmt Studio does a whole Temp Table rename thing.UPDATE:I think it is choking on the first statement with 'Incorrect syntax near the keyword 'COLUMN'.'
Notes:.You cannot add or delete more than one field or index at a time.You can use the CREATE INDEX statement to add a single- or multiple-field index to a table, and you can use ALTER TABLE or the DROP statement to delete an index created with ALTER TABLE or CREATE INDEX.You can use NOT NULL on a single field or within a named CONSTRAINT clause that applies to either a single field or to a multiple-field named CONSTRAINT. However, you can apply the NOT NULL restriction only once to a field. Attempting to apply this restriction more than once restuls in a run-time error.
MODIFY columnname action;The statement is straightforward. To modify a column of a table, you need to specify the column name, table name, and action that you want to perform.Oracle allows you to perform many actions but the following are the main ones:. Modify the column’s visibility. Allow or not allow null values. Shorten or widen the size of the column.
Alter Table Add Multiple Columns
Change the default value of a column. Modify expression of the virtual columnsTo modify multiple columns, you use the following syntax.
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