Fix a performance regression in matchinfo().

FossilOrigin-Name: fa37d8eb7cd8049689068af2a80fe2cbb4a603f1
2010-12-10 17:06:48 +00:00
parent a4bfd7fde8
commit d3842765ae
4 changed files with 19 additions and 41 deletions
@@ -3106,9 +3106,16 @@ char *sqlite3Fts3FindPositions(
  assert( pExpr->isLoaded );
  if( pExpr->aDoclist ){
    char *pEnd = &pExpr->aDoclist[pExpr->nDoclist];
-    char *pCsr = pExpr->pCurrent;
+    char *pCsr;

+    if( pExpr->pCurrent==0 ){
+      pExpr->pCurrent = pExpr->aDoclist;
+      pExpr->iCurrent = 0;
+      pExpr->pCurrent += sqlite3Fts3GetVarint(pExpr->pCurrent,&pExpr->iCurrent);
+    }
+    pCsr = pExpr->pCurrent;
    assert( pCsr );
+
    while( pCsr<pEnd ){
      if( pExpr->iCurrent<iDocid ){
        fts3PoslistCopy(0, &pCsr);