Difference between revisions of "ERROR Table Constraint"
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==Purpose== | ==Purpose== | ||
Table constraint to define an error message to be displayed when a validation check fails | Table constraint to define an error message to be displayed when a validation check fails | ||
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==Syntax== | ==Syntax== | ||
ERROR <expC> | ERROR <expC> | ||
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==See Also== | ==See Also== | ||
[[ALTER TABLE]], [[SQL Constraints|CONSTRAINTS]], [[CREATE TABLE]] | [[ALTER TABLE]], [[SQL Constraints|CONSTRAINTS]], [[CREATE TABLE]] | ||
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==Description== | ==Description== | ||
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The ERROR table constraint is used to define an error message to be displayed when a validation check fails. The <expC> is a character string of up to 80 characters. | The ERROR table constraint is used to define an error message to be displayed when a validation check fails. The <expC> is a character string of up to 80 characters. | ||
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==Example== | ==Example== | ||
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ERROR [Not authorized]) | ERROR [Not authorized]) | ||
</code> | </code> | ||
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==Products== | ==Products== | ||
Latest revision as of 10:11, 11 December 2012
Purpose
Table constraint to define an error message to be displayed when a validation check fails
Syntax
ERROR <expC>
See Also
ALTER TABLE, CONSTRAINTS, CREATE TABLE
Description
A constraint is used to define rules that help to provide data integrity. TABLE constraints apply to table-based operations. You must have ALTER privilege on the table. The table will be locked for EXCLUSIVE use during the operation.
The ERROR table constraint is used to define an error message to be displayed when a validation check fails. The <expC> is a character string of up to 80 characters.
Example
CREATE TABLE purchase_order; (POid i PRIMARY KEY, SuppId i, POtotal n(10,2),; CHECK callauth(); ERROR [Not authorized])
Products
Lianja, Lianja Server
