DECLARE Constants

You can define constants in SQL Script by declaring them with unique names.

Syntax

DECLARE [PUBLIC] <variableName>[,…] <type> DEFAULT <valueExpression>]

Remarks

•

You must declare a CONSTANT before using it.

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DEFAULT initializes the variable.

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If you declare multiple variables (for example, ROW (a INT, b CHAR)), enclose a comma-separated list of default values in parentheses in the same order (for example, DEFAULT (1, 'abc')).

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A PUBLIC constant should be declared at a global level.

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You can use a constant wherever you can use a literal.

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Constants are not modifiable.

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Variable declaration rules apply to constants. (See DECLARE Variable.)

Example

PROCEDURE constants ( )

  BEGIN

    DECLARE PUBLIC x CONSTANT INT DEFAULT 1234;

    DECLARE PUBLIC y CONSTANT ROW (a INT, b CHAR) DEFAULT (1, 'abc');

  END