1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
DROP PROCEDURE IF EXISTS proc_19194_codegen;
DROP PROCEDURE IF EXISTS bug_19194_simple;
DROP PROCEDURE IF EXISTS bug_19194_searched;
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|
set @body="";
call proc_19194_codegen("test_simple", 10, 1, @body);
select @body;
@body
CREATE PROCEDURE test_simple(i INT)
BEGIN
DECLARE str CHAR(10);
CASE i
WHEN 1 THEN SET str="1";
WHEN 2 THEN SET str="2";
WHEN 3 THEN SET str="3";
WHEN 4 THEN SET str="4";
WHEN 5 THEN SET str="5";
WHEN 6 THEN SET str="6";
WHEN 7 THEN SET str="7";
WHEN 8 THEN SET str="8";
WHEN 9 THEN SET str="9";
WHEN 10 THEN SET str="10";
ELSE SET str="unknown";
END CASE;
SELECT str;
END
call proc_19194_codegen("test_searched", 10, 0, @body);
select @body;
@body
CREATE PROCEDURE test_searched(i INT)
BEGIN
DECLARE str CHAR(10);
CASE
WHEN i=1 THEN SET str="1";
WHEN i=2 THEN SET str="2";
WHEN i=3 THEN SET str="3";
WHEN i=4 THEN SET str="4";
WHEN i=5 THEN SET str="5";
WHEN i=6 THEN SET str="6";
WHEN i=7 THEN SET str="7";
WHEN i=8 THEN SET str="8";
WHEN i=9 THEN SET str="9";
WHEN i=10 THEN SET str="10";
ELSE SET str="unknown";
END CASE;
SELECT str;
END
CALL bug_19194_simple(1);
str
1
CALL bug_19194_simple(2);
str
2
CALL bug_19194_simple(1000);
str
1000
CALL bug_19194_simple(4998);
str
4998
CALL bug_19194_simple(4999);
str
4999
CALL bug_19194_simple(9999);
str
unknown
CALL bug_19194_searched(1);
str
1
CALL bug_19194_searched(2);
str
2
CALL bug_19194_searched(1000);
str
1000
CALL bug_19194_searched(4998);
str
4998
CALL bug_19194_searched(4999);
str
4999
CALL bug_19194_searched(9999);
str
unknown
DROP PROCEDURE proc_19194_codegen;
DROP PROCEDURE bug_19194_simple;
DROP PROCEDURE bug_19194_searched;
|
