tdbc::mapSqlState(3tcl)

NAME
tdbc::mapSqlState - Map SQLSTATE to error class

SYNOPSIS
package require tdbc 1.0

tdbc::mapSqlState sqlstate

DESCRIPTION

The tdbc::mapSqlState command accepts a string that is expected to be a five-character 'SQL state' as returned from a SQL database when an error occurs. It examines the first two characters of the string, and returns an error class as a human- and machine-readable name (for example, FEATURE_NOT_SUPPORTED, DATA_EXCEPTION or INVALID_CURSOR_STATE).

The TDBC specification requires database drivers to return a description of an error in the error code when an error occurs. The description is a string that has at least four elements: "TDBC errorClass sqlstate driverName details...". The tdbc::mapSqlState command gives a convenient way for a TDBC driver to generate the errorClass element given the SQL state returned from a database.

SEE ALSO
tdbc(3tcl), tdbc::tokenize, tdbc::connection(3tcl), tdbc::statement(3tcl), tdbc::resultset(3tcl)

KEYWORDS
TDBC, SQL, database, state

COPYRIGHT
Copyright (c) 2009 by Kevin B. Kenny.