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

(no comment)

Browse Source 
FossilOrigin-Name: e272dc2b1c0edab59a40f32c77c81a3e636937280524161eff5669cb0046ad84
This commit is contained in:
dan
2018-08-15 20:28:39 +00:00
parent 356afab163
commit 5be60c55e8
8 changed files with 143 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files

82
src/alter.c
View File

@@ -982,6 +982,10 @@ static int renameColumnSelectCb(Walker *pWalker, Select *p){
*/
static int renameColumnExprCb(Walker *pWalker, Expr *pExpr){
RenameCtx *p = pWalker->u.pRename;
if( pExpr->op==TK_TRIGGER && pExpr->iColumn==p->iCol ){
renameTokenFind(pWalker->pParse, p, (void*)pExpr);
}else
if( p->zOld && pExpr->op==TK_DOT ){
Expr *pLeft = pExpr->pLeft;
Expr *pRight = pExpr->pRight;
@@ -1145,7 +1149,7 @@ static void renameColumnFunc(
if( rc==SQLITE_OK ){
sqlite3WalkSelect(&sWalker, pSelect);
}else if( rc==SQLITE_ERROR ){
/* Failed to resolve all symboles in the view. This is not an
/* Failed to resolve all symbols in the view. This is not an
** error, but it will not be edited. */
sqlite3DbFree(db, sParse.zErrMsg);
sParse.zErrMsg = 0;
@@ -1187,9 +1191,69 @@ static void renameColumnFunc(
sqlite3WalkExprList(&sWalker, sParse.pNewIndex->aColExpr);
sqlite3WalkExpr(&sWalker, sParse.pNewIndex->pPartIdxWhere);
}else{
sCtx.zOld = zOld;
sqlite3WalkExpr(&sWalker, sParse.pNewTrigger->pWhen);
if( sParse.pNewTrigger->pColumns ){
/* A trigger */
TriggerStep *pStep;
NameContext sNC;
memset(&sNC, 0, sizeof(sNC));
sNC.pParse = &sParse;
sParse.pTriggerTab = pTab;
sParse.eTriggerOp = sParse.pNewTrigger->op;
/* Resolve symbols in WHEN clause */
if( sParse.pTriggerTab==pTab && sParse.pNewTrigger->pWhen ){
rc = sqlite3ResolveExprNames(&sNC, sParse.pNewTrigger->pWhen);
}
for(pStep=sParse.pNewTrigger->step_list;
rc==SQLITE_OK && pStep;
pStep=pStep->pNext
){
if( pStep->pSelect ) sqlite3SelectPrep(&sParse, pStep->pSelect, &sNC);
if( pStep->zTarget ){
Table *pTarget = sqlite3FindTable(db, pStep->zTarget, zDb);
if( pTarget==0 ){
rc = SQLITE_ERROR;
}else{
SrcList sSrc;
memset(&sSrc, 0, sizeof(sSrc));
sSrc.nSrc = 1;
sSrc.a[0].zName = pStep->zTarget;
sSrc.a[0].pTab = pTarget;
sNC.pSrcList = &sSrc;
if( pStep->pWhere ){
rc = sqlite3ResolveExprNames(&sNC, pStep->pWhere);
}
if( rc==SQLITE_OK ){
rc = sqlite3ResolveExprListNames(&sNC, pStep->pExprList);
}
if( rc==SQLITE_OK && pTarget==pTab ){
if( pStep->pIdList ){
for(i=0; i<pStep->pIdList->nId; i++){
char *zName = pStep->pIdList->a[i].zName;
if( 0==sqlite3_stricmp(zName, zOld) ){
renameTokenFind(&sParse, &sCtx, (void*)zName);
}
}
}
if( pStep->op==TK_UPDATE ){
assert( pStep->pExprList );
for(i=0; i<pStep->pExprList->nExpr; i++){
char *zName = pStep->pExprList->a[i].zName;
if( 0==sqlite3_stricmp(zName, zOld) ){
renameTokenFind(&sParse, &sCtx, (void*)zName);
}
}
}
}
}
}
}
if( rc!=SQLITE_OK ) goto renameColumnFunc_done;
/* Find tokens to edit in UPDATE OF clause */
if( sParse.pTriggerTab==pTab && sParse.pNewTrigger->pColumns ){
for(i=0; i<sParse.pNewTrigger->pColumns->nId; i++){
char *zName = sParse.pNewTrigger->pColumns->a[i].zName;
if( 0==sqlite3_stricmp(zName, zOld) ){
@@ -1197,6 +1261,16 @@ static void renameColumnFunc(
}
}
}
/* Find tokens to edit in WHEN clause */
sqlite3WalkExpr(&sWalker, sParse.pNewTrigger->pWhen);
/* Find tokens to edit in trigger steps */
for(pStep=sParse.pNewTrigger->step_list; pStep; pStep=pStep->pNext){
sqlite3WalkSelect(&sWalker, pStep->pSelect);
sqlite3WalkExpr(&sWalker, pStep->pWhere);
sqlite3WalkExprList(&sWalker, pStep->pExprList);
}
}
assert( rc==SQLITE_OK );