.-VALUE-. >>-SIGNAL-SQLSTATE--+-------+--+-sqlstate-string-constant-+-----> '-sqlstate-string-variable-' >--+--------------------+-------------------------------------->< '-signal-information-' signal-information: .-,-----------------------------------------------------------. V | |--SET----+-MESSAGE_TEXT-------+-- = --+-variable-------------------+-+--| +-CONSTRAINT_CATALOG-+ '-diagnostic-string-constant-' +-CONSTRAINT_SCHEMA--+ +-CONSTRAINT_NAME----+ +-CATALOG_NAME-------+ +-SCHEMA_NAME--------+ +-TABLE_NAME---------+ +-COLUMN_NAME--------+ +-CURSOR_NAME--------+ +-CLASS_ORIGIN-------+ '-SUBCLASS_ORIGIN----'
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