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Overview
| Comment: | Speed up OP_Column by eliminating some double handling. (CVS 5490) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
9ebee8401b68a2bcd49dc750ac394258 |
| User & Date: | danielk1977 2008-07-29 10:18:57 |
Context
|
2008-07-29
| ||
| 10:26 | Add a missing "finish_test" to the end of misc5.test. (CVS 5491) (check-in: 89216b16 user: danielk1977 tags: trunk) | |
| 10:18 | Speed up OP_Column by eliminating some double handling. (CVS 5490) (check-in: 9ebee840 user: danielk1977 tags: trunk) | |
| 01:13 | Re-used prepared statement from fts3 cursor. Previously, each call to fulltextFilter() finalized any existing prepared statement and prepared a new one. In the case where idxNum has not changed, simply reseting the statement suffices. This provides an order of magnitude speedup in incoming joins against docid. (CVS 5489) (check-in: a08a5f2b user: shess tags: trunk) | |
Changes
Changes to src/vdbe.c.
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** ** Various scripts scan this source file in order to generate HTML ** documentation, headers files, or other derived files. The formatting ** of the code in this file is, therefore, important. See other comments ** in this file for details. If in doubt, do not deviate from existing ** commenting and indentation practices when changing or adding code. ** ** $Id: vdbe.c,v 1.766 2008/07/28 19:34:54 drh Exp $ */ #include "sqliteInt.h" #include <ctype.h> #include "vdbeInt.h" /* ** The following global variable is incremented every time a cursor ................................................................................ ** then there are not enough fields in the record to satisfy the ** request. In this case, set the value NULL or to P4 if P4 is ** a pointer to a Mem object. */ if( aOffset[p2] ){ assert( rc==SQLITE_OK ); if( zRec ){ if( pDest->flags&MEM_Dyn ){ sqlite3VdbeSerialGet((u8 *)&zRec[aOffset[p2]], aType[p2], &sMem); sMem.db = db; rc = sqlite3VdbeMemCopy(pDest, &sMem); assert( !(sMem.flags&MEM_Dyn) ); if( rc!=SQLITE_OK ){ goto op_column_out; } }else{ sqlite3VdbeSerialGet((u8 *)&zRec[aOffset[p2]], aType[p2], pDest); } }else{ len = sqlite3VdbeSerialTypeLen(aType[p2]); sqlite3VdbeMemMove(&sMem, pDest); rc = sqlite3VdbeMemFromBtree(pCrsr, aOffset[p2], len, pC->isIndex, &sMem); if( rc!=SQLITE_OK ){ goto op_column_out; } |
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** ** Various scripts scan this source file in order to generate HTML ** documentation, headers files, or other derived files. The formatting ** of the code in this file is, therefore, important. See other comments ** in this file for details. If in doubt, do not deviate from existing ** commenting and indentation practices when changing or adding code. ** ** $Id: vdbe.c,v 1.767 2008/07/29 10:18:57 danielk1977 Exp $ */ #include "sqliteInt.h" #include <ctype.h> #include "vdbeInt.h" /* ** The following global variable is incremented every time a cursor ................................................................................ ** then there are not enough fields in the record to satisfy the ** request. In this case, set the value NULL or to P4 if P4 is ** a pointer to a Mem object. */ if( aOffset[p2] ){ assert( rc==SQLITE_OK ); if( zRec ){ sqlite3VdbeMemReleaseExternal(pDest); sqlite3VdbeSerialGet((u8 *)&zRec[aOffset[p2]], aType[p2], pDest); }else{ len = sqlite3VdbeSerialTypeLen(aType[p2]); sqlite3VdbeMemMove(&sMem, pDest); rc = sqlite3VdbeMemFromBtree(pCrsr, aOffset[p2], len, pC->isIndex, &sMem); if( rc!=SQLITE_OK ){ goto op_column_out; } |