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#
# Bug#19194 (Right recursion in parser for CASE causes excessive stack
# usage, limitation)
#
--disable_warnings
DROP PROCEDURE IF EXISTS proc_19194_codegen;
DROP PROCEDURE IF EXISTS bug_19194_simple;
DROP PROCEDURE IF EXISTS bug_19194_searched;
--enable_warnings
delimiter |;
CREATE PROCEDURE proc_19194_codegen(
IN proc_name VARCHAR(50),
IN count INTEGER,
IN simple INTEGER,
OUT body MEDIUMTEXT)
BEGIN
DECLARE code MEDIUMTEXT;
DECLARE i INT DEFAULT 1;
SET code = concat("CREATE PROCEDURE ", proc_name, "(i INT)\n");
SET code = concat(code, "BEGIN\n");
SET code = concat(code, " DECLARE str CHAR(10);\n");
IF (simple)
THEN
SET code = concat(code, " CASE i\n");
ELSE
SET code = concat(code, " CASE\n");
END IF;
WHILE (i <= count)
DO
IF (simple)
THEN
SET code = concat(code, " WHEN ", i, " THEN SET str=\"", i, "\";\n");
ELSE
SET code = concat(code, " WHEN i=", i, " THEN SET str=\"", i, "\";\n");
END IF;
SET i = i + 1;
END WHILE;
SET code = concat(code, " ELSE SET str=\"unknown\";\n");
SET code = concat(code, " END CASE;\n");
SET code = concat(code, " SELECT str;\n");
SET code = concat(code, "END\n");
SET body = code;
END|
delimiter ;|
set @body="";
call proc_19194_codegen("test_simple", 10, 1, @body);
select @body;
call proc_19194_codegen("test_searched", 10, 0, @body);
select @body;
--disable_query_log
call proc_19194_codegen("bug_19194_simple", 5000, 1, @body);
let $proc_body = `select @body`;
eval $proc_body;
call proc_19194_codegen("bug_19194_searched", 5000, 1, @body);
let $proc_body = `select @body`;
eval $proc_body;
--enable_query_log
CALL bug_19194_simple(1);
CALL bug_19194_simple(2);
CALL bug_19194_simple(1000);
CALL bug_19194_simple(4998);
CALL bug_19194_simple(4999);
CALL bug_19194_simple(9999);
CALL bug_19194_searched(1);
CALL bug_19194_searched(2);
CALL bug_19194_searched(1000);
CALL bug_19194_searched(4998);
CALL bug_19194_searched(4999);
CALL bug_19194_searched(9999);
DROP PROCEDURE proc_19194_codegen;
DROP PROCEDURE bug_19194_simple;
DROP PROCEDURE bug_19194_searched;
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