On Jun 27, 2009, at 2:47 PM, chandan wrote:
> The code snippet is shown below:
>
> /
> **************************************************************************************************/
> #include <stdio.h>
> #include <stdlib.h>
> #include <stdint.h>
> #include <string.h>
> #include <sqlite3.h>
>
> const char *create_and_insert = "create table some_tbl (id int primary
> key, version text check (version in (\"1.0\")));"
> "insert into some_tbl (id) values (1);";
> const char *update_sql = "update some_tbl set version = ? where id
> = ?";
>
> int32_t main(int32_t argc, char *argv[])
> {
> sqlite3 *db;
> char *err_msg;
> sqlite3_stmt *stmt;
> int32_t ret;
>
> if (argc != 2) {
> fprintf(stderr, "Usage: %s <database name>.\n", argv[0]);
> goto out1;
> }
>
> db = NULL;
> ret = sqlite3_open(argv[1], &db);
> if (ret != SQLITE_OK) {
> fprintf(stderr, "Unable to open database.\n");
> goto out1;
> }
>
> err_msg = NULL;
> ret = sqlite3_exec(db, create_and_insert, NULL, NULL, &err_msg);
> if (ret != SQLITE_OK) {
> fprintf(stderr, "sqlite3_exec: %s.\n", err_msg);
> sqlite3_free(err_msg);
> }
>
> stmt = NULL;
> ret = sqlite3_prepare_v2(db, update_sql, strlen(update_sql) + 1,
> &stmt, NULL);
> if (ret != SQLITE_OK) {
> fprintf(stderr, "sqlite3_stmt: %s", sqlite3_errmsg(db));
> goto out2;
> }
>
> ret = sqlite3_bind_text(stmt, 1, "1.1", strlen("1.1") + 1,
> SQLITE_TRANSIENT);
> if (ret != SQLITE_OK) {
> fprintf(stderr, "sqlite3_bind_text: %s",
> sqlite3_errmsg(db));
> goto out3;
> }
>
> ret = sqlite3_bind_int(stmt, 2, 0);
The 0 above should be 1. Also, you don't need to add one to the
return of strlen().
Dan.
>
> if (ret != SQLITE_OK) {
> fprintf(stderr, "sqlite3_bind_int: %s",
> sqlite3_errmsg(db));
> goto out3;
> }
>
> ret = sqlite3_step(stmt);
> if (ret != SQLITE_DONE) {
> fprintf(stderr, "sqlite3_step: %s",
> sqlite3_errmsg(db));
> goto out3;
> }
>
> ret = sqlite3_finalize(stmt);
> if (ret != SQLITE_OK) {
> fprintf(stderr, "sqlite3_finalize: %s",
> sqlite3_errmsg(db));
> }
>
> ret = sqlite3_close(db);
> if (ret != SQLITE_OK) {
> fprintf(stderr, "Unable to close the database.\n");
> }
>
> exit(0);
>
> out3:
> ret = sqlite3_finalize(stmt);
> if (ret != SQLITE_OK) {
> fprintf(stderr, "sqlite3_finalize: %s",
> sqlite3_errmsg(db));
> }
> out2:
> ret = sqlite3_close(db);
> out1:
> exit(1);
> }
> /
> ********************************************************************************************/
>
>
> Roger Binns wrote:
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>>
>> chandan wrote:
>>
>>> I have attached the C program along this mail.
>>>
>>
>> This mailing list strips all attachments, so we can't see your
>> code :-)
>>
>>
>>> Am i doing anything wrong in the program?
>>>
>>
>> Yes. SQLite does fundamentally work. We'd have noticed by now if a
>> simple update didn't work :-)
>>
>> You should look over the programming documentation on the web site
>> including sample programs again.
>>
>> Roger
>> -----BEGIN PGP SIGNATURE-----
>> Version: GnuPG v1.4.9 (GNU/Linux)
>>
>> iEYEARECAAYFAkpF0O4ACgkQmOOfHg372QQlrQCffy0JJqpxSaDR8pg9B903eofi
>> DYYAnR/gOPJLgpdC1c0CLwa0rA7IOJG0
>> =MP0E
>> -----END PGP SIGNATURE-----
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>>
>>
>
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