Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Enhance the sqlite3_data_count() routine so that it can be used to determine if SQLITE_DONE has been seen on the prepared statement. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
9913996e7b0f94ba1c51200b61433193 |
| User & Date: | drh 2011-10-07 12:59:23.182 |
References
|
2011-10-10
| ||
| 18:59 | Cherrypick the sqlite_data_count() changes from [d4f95b3b6e] and [9913996e7b] into the apple-osx branch for version 3.7.7. (check-in: aef7945c42 user: drh tags: apple-osx-377) | |
Context
|
2011-10-07
| ||
| 16:57 | Add the SQLITE_FCNTL_OVERWRITE file-control. Used by SQLite to indicate to the OS layer that the current transaction will overwrite the entire file. (check-in: 1da87fcdac user: dan tags: trunk) | |
| 13:33 | Begin an effort to enhance the query planner to do a better job with OR terms in the WHERE clause. This change allows ANDs outside of the OR to be factored into the OR terms if that is helpful in finding better indices. (check-in: 876bd21aaa user: drh tags: or-opt) | |
| 12:59 | Enhance the sqlite3_data_count() routine so that it can be used to determine if SQLITE_DONE has been seen on the prepared statement. (check-in: 9913996e7b user: drh tags: trunk) | |
|
2011-10-05
| ||
| 19:46 | Add the --pageinfo and --stats options to the sqlite3_analyzer utility. (check-in: baa80c7bc3 user: drh tags: trunk) | |
Changes
Changes to src/sqlite.h.in.
| ︙ | ︙ | |||
3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 | ** ** ^The sqlite3_data_count(P) interface returns the number of columns in the ** current row of the result set of [prepared statement] P. ** ^If prepared statement P does not have results ready to return ** (via calls to the [sqlite3_column_int | sqlite3_column_*()] of ** interfaces) then sqlite3_data_count(P) returns 0. ** ^The sqlite3_data_count(P) routine also returns 0 if P is a NULL pointer. ** ** See also: [sqlite3_column_count()] */ int sqlite3_data_count(sqlite3_stmt *pStmt); /* ** CAPI3REF: Fundamental Datatypes | > > > > > > | 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 | ** ** ^The sqlite3_data_count(P) interface returns the number of columns in the ** current row of the result set of [prepared statement] P. ** ^If prepared statement P does not have results ready to return ** (via calls to the [sqlite3_column_int | sqlite3_column_*()] of ** interfaces) then sqlite3_data_count(P) returns 0. ** ^The sqlite3_data_count(P) routine also returns 0 if P is a NULL pointer. ** ^The sqlite3_data_count(P) routine returns 0 if the previous call to ** [sqlite3_step](P) returned [SQLITE_DONE]. ^The sqlite3_data_count(P) ** will return non-zero if previous call to [sqlite3_step](P) returned ** [SQLITE_ROW], except in the case of the [PRAGMA incremental_vacuum] ** where it always returns zero since each step of that multi-step ** pragma returns 0 columns of data. ** ** See also: [sqlite3_column_count()] */ int sqlite3_data_count(sqlite3_stmt *pStmt); /* ** CAPI3REF: Fundamental Datatypes |
| ︙ | ︙ |
Changes to src/vdbeaux.c.
| ︙ | ︙ | |||
1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 |
assert( p->rc==SQLITE_OK || p->rc==SQLITE_BUSY || p->rc==SQLITE_NOMEM );
/* Even though this opcode does not use dynamic strings for
** the result, result columns may become dynamic if the user calls
** sqlite3_column_text16(), causing a translation to UTF-16 encoding.
*/
releaseMemArray(pMem, 8);
if( p->rc==SQLITE_NOMEM ){
/* This happens if a malloc() inside a call to sqlite3_column_text() or
** sqlite3_column_text16() failed. */
db->mallocFailed = 1;
return SQLITE_ERROR;
}
| > | 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 |
assert( p->rc==SQLITE_OK || p->rc==SQLITE_BUSY || p->rc==SQLITE_NOMEM );
/* Even though this opcode does not use dynamic strings for
** the result, result columns may become dynamic if the user calls
** sqlite3_column_text16(), causing a translation to UTF-16 encoding.
*/
releaseMemArray(pMem, 8);
p->nResColumn = 0;
if( p->rc==SQLITE_NOMEM ){
/* This happens if a malloc() inside a call to sqlite3_column_text() or
** sqlite3_column_text16() failed. */
db->mallocFailed = 1;
return SQLITE_ERROR;
}
|
| ︙ | ︙ |