database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-12 13:01:09 +03:00
Code Activity

Combine the Expr.pTab and Expr.pWin fields into a union named "y". Add a new

Browse Source 
EP_WinFunc property that is only true if Expr.y.pWin is a valid pointer.
This reduces the size of the Expr object by 8 bytes, reduces the overall
amount of code, and shaves over 1 million cycles off of the speed test.

FossilOrigin-Name: ad130bb86e74e6ce165fdbdce3a19699510f0e62071c1c7923b5a4538d888c7c
This commit is contained in:
drh
2018-09-20 19:02:15 +00:00
parent 85c6892aa4
commit eda079cd2c
15 changed files with 123 additions and 121 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/alter.c
View File

@@ -803,7 +803,7 @@ static int renameColumnExprCb(Walker *pWalker, Expr *pExpr){
renameTokenFind(pWalker->pParse, p, (void*)pExpr);
}else if( pExpr->op==TK_COLUMN
&& pExpr->iColumn==p->iCol
&& p->pTab==pExpr->pTab
&& p->pTab==pExpr->y.pTab
){
renameTokenFind(pWalker->pParse, p, (void*)pExpr);
}
@@ -1341,8 +1341,8 @@ renameColumnFunc_done:
*/
static int renameTableExprCb(Walker *pWalker, Expr *pExpr){
RenameCtx *p = pWalker->u.pRename;
if( pExpr->op==TK_COLUMN && p->pTab==pExpr->pTab ){
renameTokenFind(pWalker->pParse, p, (void*)&pExpr->pTab);
if( pExpr->op==TK_COLUMN && p->pTab==pExpr->y.pTab ){
renameTokenFind(pWalker->pParse, p, (void*)&pExpr->y.pTab);
}
return WRC_Continue;
}