1--TEST--
2API vs. SQL LAST_INSERT_ID()
3--SKIPIF--
4<?php
5  require_once('skipif.inc');
6  require_once('skipifconnectfailure.inc');
7?>
8--FILE--
9<?php
10    /*
11    CAUTION: the insert_id() API call is not supposed to return
12    the same value as a call to the LAST_INSERT_ID() SQL function.
13    It is not necessarily a bug if API and SQL function return different
14    values. Check the MySQL C API reference manual for details.
15    */
16    require_once("connect.inc");
17
18    function get_sql_id($link) {
19        if (!($res = $link->query("SELECT LAST_INSERT_ID() AS _id"))) {
20            printf("[003] [%d] %s\n", $link->errno, $link->error);
21            return NULL;
22        }
23        $row = $res->fetch_assoc();
24        $res->close();
25
26        return $row['_id'];
27    }
28
29    if (!$link = my_mysqli_connect($host, $user, $passwd, $db, $port, $socket))
30        printf("[001] Cannot connect to the server using host=%s, user=%s, passwd=***, dbname=%s, port=%s, socket=%s\n",
31            $host, $user, $db, $port, $socket);
32
33    if (!$link->query("DROP TABLE IF EXISTS test") ||
34        !$link->query("CREATE TABLE test (id INT auto_increment, label varchar(10) not null, PRIMARY KEY (id)) ENGINE=MyISAM") ||
35        !$link->query("INSERT INTO test (id, label) VALUES (null, 'a')")) {
36        printf("[002] [%d] %s\n", $link->errno, $link->error);
37    }
38
39    $api_id = $link->insert_id;
40    $sql_id = get_sql_id($link);
41    printf("API: %d, SQL: %d\n", $api_id, $sql_id);
42
43    if ($api_id < 1)
44        printf("[004] Expecting id > 0 got %d, [%d] %s\n", $api_id, $link->errno, $link->error)	;
45    if ($api_id != $sql_id)
46        printf("[005] SQL id %d should be equal to API id %d\n", $sql_id, $api_id);
47
48    // Not an INSERT, API value must become 0
49    if (!($res = $link->query("SELECT 1 FROM DUAL")))
50        printf("[006] [%d] %s\n", $link->errno, $link->error);
51    else
52        $res->close();
53
54    $api_id = $link->insert_id;
55    $new_sql_id = get_sql_id($link);
56    if (0 !== $api_id) {
57        printf("[007] API id should have been reset to 0 because previous query was SELECT, got API %d, SQL %d\n",
58          $api_id, $new_sql_id);
59    }
60    if ($new_sql_id != $sql_id) {
61        printf("[008] The servers LAST_INSERT_ID() changed unexpectedly from %d to %d\n", $sql_id, $new_sql_id);
62    }
63
64    // Insert fails, LAST_INSERT_ID shall not change, API shall return 0
65    if ($link->query("INSERT INTO test (id, label) VALUES (null, null)")) {
66        printf("[009] The INSERT did not fail as planned, [%d] %s\n", $link->errno, $link->error);
67    }
68    $api_id = $link->insert_id;
69    $new_sql_id = get_sql_id($link);
70
71    if (0 !== $api_id) {
72        printf("[010] API id should have been reset to 0 because previous query was SELECT, got API %d, SQL %d\n",
73          $api_id, $new_sql_id);
74    }
75    if ($new_sql_id != $sql_id) {
76        printf("[011] The servers LAST_INSERT_ID() changed unexpectedly from %d to %d\n", $sql_id, $new_sql_id);
77    }
78
79    // Sequence counter pattern...
80    if (!$link->query("UPDATE test SET id=LAST_INSERT_ID(id+1)"))
81      printf("[012] [%d] %s\n", $link->errno, $link->error);
82
83    $api_id = $link->insert_id;
84    $new_sql_id = get_sql_id($link);
85    if ($api_id < 1)
86        printf("[013] Expecting id > 0 got %d, [%d] %s\n", $api_id, $link->errno, $link->error)	;
87    if ($api_id != $new_sql_id)
88        printf("[014] SQL id %d should be equal to API id %d\n", $new_sql_id, $api_id);
89    if ($sql_id == $new_sql_id)
90        printf("[015] SQL id %d should have had changed, got %d\n", $sql_id, $new_sql_id);
91
92    $sql_id = $new_sql_id;
93
94    // Not an INSERT (after UPDATE), API value must become 0
95    if (!$link->query("SET @myvar=1"))
96        printf("[016] [%d] %s\n", $link->errno, $link->error);
97
98    $api_id = $link->insert_id;
99    $new_sql_id = get_sql_id($link);
100    if (0 !== $api_id) {
101        printf("[017] API id should have been reset to 0 because previous query was SET, got API %d, SQL %d\n",
102          $api_id, $new_sql_id);
103    }
104    if ($new_sql_id != $sql_id) {
105        printf("[018] The servers LAST_INSERT_ID() changed unexpectedly from %d to %d\n", $sql_id, $new_sql_id);
106    }
107
108    if (!$link->query("INSERT INTO test(id, label) VALUES (LAST_INSERT_ID(id + 1), 'b')"))
109        printf("[019] [%d] %s\n", $link->errno, $link->error);
110
111    $api_id = $link->insert_id;
112    $sql_id = get_sql_id($link);
113    if ($api_id != $sql_id)
114        printf("[020] SQL id %d should be equal to API id %d\n", $sql_id, $api_id);
115
116    if (!$link->query("INSERT INTO test(label) VALUES ('c')"))
117        printf("[021] [%d] %s\n", $link->errno, $link->error);
118
119    $api_id = $link->insert_id;
120    $sql_id = get_sql_id($link);
121    if ($api_id != $sql_id)
122        printf("[022] SQL id %d should be equal to API id %d\n", $sql_id, $api_id);
123
124    if (!($res = $link->query("SELECT id, label FROM test ORDER BY id ASC")))
125        printf("[023] [%d] %s\n", $link->errno, $link->error);
126
127    printf("Dumping table contents before INSERT...SELECT experiments...\n");
128    while ($row = $res->fetch_assoc()) {
129        printf("id = %d, label = '%s'\n", $row['id'], $row['label']);
130    }
131    $res->close();
132
133    if (!$link->query("INSERT INTO test(label) SELECT CONCAT(label, id) FROM test ORDER BY id ASC"))
134      printf("[024] [%d] %s\n", $link->errno, $link->error);
135
136    $api_id = $link->insert_id;
137    $sql_id = get_sql_id($link);
138    if ($api_id != $sql_id)
139        printf("[025] SQL id %d should be equal to API id %d\n", $sql_id, $api_id);
140
141    if ($link->query("INSERT INTO test(id, label) SELECT id, CONCAT(label, id) FROM test ORDER BY id ASC"))
142      printf("[026] INSERT should have failed because of duplicate PK value, [%d] %s\n", $link->errno, $link->error);
143
144    $api_id = $link->insert_id;
145    $new_sql_id = get_sql_id($link);
146    if (0 !== $api_id) {
147        printf("[027] API id should have been reset to 0 because previous query failed, got API %d, SQL %d\n",
148          $api_id, $new_sql_id);
149    }
150    if ($new_sql_id != $sql_id) {
151        printf("[028] The servers LAST_INSERT_ID() changed unexpectedly from %d to %d\n", $sql_id, $new_sql_id);
152    }
153
154    /* API insert id will be 101 because of UPDATE, SQL unchanged */
155    if (!$link->query(sprintf("INSERT INTO test(id, label) VALUES (%d, 'z') ON DUPLICATE KEY UPDATE id = 101", $sql_id)	))
156      printf("[029] [%d] %s\n", $link->errno, $link->error);
157
158    $api_id = $link->insert_id;
159    $new_sql_id = get_sql_id($link);
160    if ($api_id != 101)
161        printf("[030] API id should be %d got %d\n", $sql_id, $api_id);
162    if ($new_sql_id != $sql_id) {
163        printf("[031] The servers LAST_INSERT_ID() changed unexpectedly from %d to %d\n", $sql_id, $new_sql_id);
164    }
165
166    if (!($res = $link->query("SELECT id, label FROM test ORDER BY id ASC")))
167        printf("[032] [%d] %s\n", $link->errno, $link->error);
168
169    printf("Dumping table contents after INSERT...SELECT...\n");
170    while ($row = $res->fetch_assoc()) {
171        printf("id = %d, label = '%s'\n", $row['id'], $row['label']);
172    }
173    $res->close();
174
175    print "done!";
176?>
177--CLEAN--
178<?php
179    require_once("clean_table.inc");
180?>
181--EXPECTF--
182API: %d, SQL: %d
183Dumping table contents before INSERT...SELECT experiments...
184id = %d, label = 'b'
185id = %d, label = 'a'
186id = %d, label = 'c'
187Dumping table contents after INSERT...SELECT...
188id = %d, label = 'b'
189id = %d, label = 'a'
190id = %d, label = 'c'
191id = %d, label = 'a%d'
192id = %d, label = 'c%d'
193id = 101, label = 'b%d'
194done!
195