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The LIKE optimization does the right thing when collating sequences are

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present.  LIKE expressions where the left-hand side has COLLATE NOCASE
are optimized in the default case. (CVS 2637)

FossilOrigin-Name: ef84ff795c85e9d28f1cac84ff42d8d4ef84cfc4
This commit is contained in:
drh
2005-08-28 17:00:23 +00:00
parent bfd6b03554
commit d64fe2f374
9 changed files with 126 additions and 34 deletions
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12
src/main.c
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@@ -14,7 +14,7 @@
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.298 2005/08/14 01:20:39 drh Exp $
** $Id: main.c,v 1.299 2005/08/28 17:00:23 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
@@ -694,6 +694,7 @@ static int openDatabase(
){
sqlite3 *db;
int rc, i;
CollSeq *pColl;
/* Allocate the sqlite data structure */
db = sqliteMalloc( sizeof(sqlite3) );
@@ -730,6 +731,13 @@ static int openDatabase(
/* Also add a UTF-8 case-insensitive collation sequence. */
sqlite3_create_collation(db, "NOCASE", SQLITE_UTF8, 0, nocaseCollatingFunc);
/* Set flags on the built-in collating sequences */
db->pDfltColl->type = SQLITE_COLL_BINARY;
pColl = sqlite3FindCollSeq(db, SQLITE_UTF8, "NOCASE", 6, 0);
if( pColl ){
pColl->type = SQLITE_COLL_NOCASE;
}
/* Open the backend database driver */
rc = sqlite3BtreeFactory(db, zFilename, 0, MAX_PAGES, &db->aDb[0].pBt);
if( rc!=SQLITE_OK ){
@@ -901,7 +909,7 @@ int sqlite3_create_collation(
pColl = sqlite3FindCollSeq(db, (u8)enc, zName, strlen(zName), 1);
if( 0==pColl ){
rc = SQLITE_NOMEM;
rc = SQLITE_NOMEM;
}else{
pColl->xCmp = xCompare;
pColl->pUser = pCtx;