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use test; drop procedure if exists signal_proc; drop function if exists signal_func; create procedure signal_proc() begin DECLARE foo CONDITION FOR SQLSTATE '12345'; SIGNAL foo; SIGNAL foo SET MESSAGE_TEXT = "This is an error message"; RESIGNAL foo; RESIGNAL foo SET MESSAGE_TEXT = "This is an error message"; end $$ create function signal_func() returns int begin DECLARE foo CONDITION FOR SQLSTATE '12345'; SIGNAL foo; SIGNAL foo SET MESSAGE_TEXT = "This is an error message"; RESIGNAL foo; RESIGNAL foo SET MESSAGE_TEXT = "This is an error message"; return 0; end $$ show procedure code signal_proc; Pos Instruction 0 stmt "SIGNAL foo" 1 stmt "SIGNAL foo SET MESSAGE_TEXT = "This i..." 2 stmt "RESIGNAL foo" 3 stmt "RESIGNAL foo SET MESSAGE_TEXT = "This..." drop procedure signal_proc; show function code signal_func; Pos Instruction 0 stmt "SIGNAL foo" 1 stmt "SIGNAL foo SET MESSAGE_TEXT = "This i..." 2 stmt "RESIGNAL foo" 3 stmt "RESIGNAL foo SET MESSAGE_TEXT = "This..." 4 freturn 3 0 drop function signal_func;