UPDATE

An UPDATE statement in SQL Script updates records in a table.

Syntax

UPDATE <table>

	SET <column> = <valueExpression> [, <column> = <valueExpression>]*

	[WHERE <conditionalExpression>]

Remarks

•

Any UPDATE statement that the system accepts can be used as a standalone SQL Script statement.

•

Variables are allowed in a SQL statement anywhere a literal is allowed.

•

The WHERE clause is optional. The rules for the WHERE clause of an UPDATE statement is the same as the rules for WHERE clause of a SELECT statement.

•

The following subqueries in the SET clause are not allowed:

UPDATE <table1> SET x = (SELECT y FROM <table2>) 

Examples

PROCEDURE p ( )

BEGIN

  DELETE FROM /shared/scores;

  INSERT INTO /shared/scores VALUES ('Joe', 1001);

  UPDATE /shared/.scores SET score=1239 WHERE name='Sue';

END

PROCEDURE p (IN p_name VARCHAR, IN new_score)

BEGIN

  DELETE FROM /shared/scores WHERE name=p_name;

  INSERT INTO /shared/scores VALUES (p_name, new_score);

  UPDATE /shared/.scores SET score=new_score WHERE name=p_name;

END