diff --git a/udfs/test/minacum.sql b/udfs/test/minacum.sql
index f283fd5..73bb61e 100644
--- a/udfs/test/minacum.sql
+++ b/udfs/test/minacum.sql
@@ -1,32 +1,34 @@
 DROP TEMPORARY TABLE IF EXISTS tData;
 CREATE TEMPORARY TABLE tData
+	ENGINE = MEMORY
 	SELECT 1 `group`, 1 `ival`, 10 `num`
-	UNION SELECT 1, 3, -2
-	UNION SELECT 1, 2, 1
-	UNION SELECT 1, 3, -1
-	UNION SELECT 1, 2, -5
-	UNION SELECT 2, '1', 20
-	UNION SELECT 2, '3', -5
-	UNION SELECT 2, '2', 1
-	UNION SELECT 2, '3', 10
-	UNION SELECT 2, '2', -6
-	UNION SELECT 3, 2, 8
-	UNION SELECT 3, 3, 10
-	UNION SELECT 4, 2, 10
-	UNION SELECT 4, 3, -24
-	UNION SELECT 5, NULL, 0
-	UNION SELECT 5, NULL, -4
-	UNION SELECT 6, 2, NULL
-	UNION SELECT 6, 3, -8;
+		UNION SELECT 1, 3, -2
+		UNION SELECT 1, 2, 1
+		UNION SELECT 1, 3, -1
+		UNION SELECT 1, 2, -5
+		UNION SELECT 2, '1', 20
+		UNION SELECT 2, '3', -5
+		UNION SELECT 2, '2', 1
+		UNION SELECT 2, '3', 10
+		UNION SELECT 2, '2', -6
+		UNION SELECT 3, 2, 8
+		UNION SELECT 3, 3, 10
+		UNION SELECT 4, 2, 10
+		UNION SELECT 4, 3, -24
+		UNION SELECT 5, NULL, 0
+		UNION SELECT 5, NULL, -4
+		UNION SELECT 6, 2, NULL
+		UNION SELECT 6, 3, -8;
 
 DROP TEMPORARY TABLE IF EXISTS tExpect;
 CREATE TEMPORARY TABLE tExpect
+	ENGINE = MEMORY
 	SELECT 1 `group`, 3 expect
-	UNION SELECT 2, 15
-	UNION SELECT 3, 0
-	UNION SELECT 4, -14
-	UNION SELECT 5, -4
-	UNION SELECT 6, -8;
+		UNION SELECT 2, 15
+		UNION SELECT 3, 0
+		UNION SELECT 4, -14
+		UNION SELECT 5, -4
+		UNION SELECT 6, -8;
 
 SELECT e.`group`, r.result, e.expect, r.result <=> e.expect isRight
 	FROM tExpect e
diff --git a/udfs/test/multimax.sql b/udfs/test/multimax.sql
index d2a1c36..65c63bc 100644
--- a/udfs/test/multimax.sql
+++ b/udfs/test/multimax.sql
@@ -1,29 +1,31 @@
 DROP TEMPORARY TABLE IF EXISTS tData;
 CREATE TEMPORARY TABLE tData
+	ENGINE = MEMORY
 	SELECT 1 `group`, 1 `max`, 10 `value`
-	UNION SELECT 1, 3, 30
-	UNION SELECT 1, 2, 20
-	UNION SELECT 1, 3, 31
-	UNION SELECT 1, 2, 21
-	UNION SELECT 2, '4', 40
-	UNION SELECT 2, '6', 60
-	UNION SELECT 2, '5', 50
-	UNION SELECT 2, '6', 61
-	UNION SELECT 2, '5', 51
-	UNION SELECT 3, 7, 70
-	UNION SELECT 3, 9, 90
-	UNION SELECT 3, 8, 80
-	UNION SELECT 3, 9, NULL
-	UNION SELECT 3, 8, 81
-	UNION SELECT 4, NULL, 101
-	UNION SELECT 4, NULL, 102;
+		UNION SELECT 1, 3, 30
+		UNION SELECT 1, 2, 20
+		UNION SELECT 1, 3, 31
+		UNION SELECT 1, 2, 21
+		UNION SELECT 2, '4', 40
+		UNION SELECT 2, '6', 60
+		UNION SELECT 2, '5', 50
+		UNION SELECT 2, '6', 61
+		UNION SELECT 2, '5', 51
+		UNION SELECT 3, 7, 70
+		UNION SELECT 3, 9, 90
+		UNION SELECT 3, 8, 80
+		UNION SELECT 3, 9, NULL
+		UNION SELECT 3, 8, 81
+		UNION SELECT 4, NULL, 101
+		UNION SELECT 4, NULL, 102;
 
 DROP TEMPORARY TABLE IF EXISTS tExpect;
 CREATE TEMPORARY TABLE tExpect
+	ENGINE = MEMORY
 	SELECT 1 `group`, 31 expect
-	UNION SELECT 2, 61
-	UNION SELECT 3, NULL
-	UNION SELECT 4, 102;
+		UNION SELECT 2, 61
+		UNION SELECT 3, NULL
+		UNION SELECT 4, 102;
 
 SELECT e.`group`, r.result, e.expect, r.result <=> e.expect isRight
 	FROM tExpect e
diff --git a/udfs/test/sql_printf.sql b/udfs/test/sql_printf.sql
index ed997a2..12c33d6 100644
--- a/udfs/test/sql_printf.sql
+++ b/udfs/test/sql_printf.sql
@@ -1,17 +1,18 @@
 DROP TEMPORARY TABLE IF EXISTS tData;
 CREATE TEMPORARY TABLE tData
+	ENGINE = MEMORY
 	SELECT sql_printf('SELECT %v FROM %t', 1, 'tbl') result, 'SELECT 1 FROM `tbl`' expect
-	UNION SELECT sql_printf('%v', TRUE), 1
-	UNION SELECT sql_printf('%v', 1), 1
-	UNION SELECT sql_printf('%v', 'string'), '\'string\''
-	UNION SELECT sql_printf('%v', DATE('2020-01-01')), '\'2020-01-01\''
-	UNION SELECT sql_printf('%v', NULL), 'NULL'
-	UNION SELECT sql_printf('%t', 'myTable'), '`myTable`'
-	UNION SELECT sql_printf('%s', 'expr = TRUE'), 'expr = TRUE'
-	UNION SELECT sql_printf('%%'), '%'
-	UNION SELECT sql_printf(NULL), NULL
-	UNION SELECT sql_printf('SELECT %'), NULL
-	UNION SELECT sql_printf('SELECT %v'), NULL;
+		UNION SELECT sql_printf('%v', TRUE), 1
+		UNION SELECT sql_printf('%v', 1), 1
+		UNION SELECT sql_printf('%v', 'string'), '\'string\''
+		UNION SELECT sql_printf('%v', DATE('2020-01-01')), '\'2020-01-01\''
+		UNION SELECT sql_printf('%v', NULL), 'NULL'
+		UNION SELECT sql_printf('%t', 'myTable'), '`myTable`'
+		UNION SELECT sql_printf('%s', 'expr = TRUE'), 'expr = TRUE'
+		UNION SELECT sql_printf('%%'), '%'
+		UNION SELECT sql_printf(NULL), NULL
+		UNION SELECT sql_printf('SELECT %'), NULL
+		UNION SELECT sql_printf('SELECT %v'), NULL;
 
 SELECT result, expect, result <=> expect isRight FROM tData;
     
diff --git a/udfs/test/udf.sql b/udfs/test/udf.sql
index a72c564..ebff509 100644
--- a/udfs/test/udf.sql
+++ b/udfs/test/udf.sql
@@ -11,11 +11,13 @@ BEGIN
 
 	WHILE vI < vLoops DO
 		SELECT minacum(2, -10, 1) INTO vRes;
+		SELECT multimax(10, 20) INTO vRes;
+		SELECT sql_printf('SELECT %v FROM %t', TRUE, 'myTable') INTO vRes;
 		SET vI = vI + 1;
 	END WHILE;
 END$$
 DELIMITER ;
 
-CALL udf_test(POW(10, 6));
+CALL udf_test(POW(10, 7));
 
 DROP PROCEDURE udf_test;