599   int iCol;                       /* Index of column being renamed */  in sqlite3AlterRenameColumn()  local
630   for(iCol=0; iCol<pTab->nCol; iCol++){  in sqlite3AlterRenameColumn()
631     if( 0==sqlite3StrICmp(pTab->aCol[iCol].zCnName, zOld) ) break;  in sqlite3AlterRenameColumn()
633   if( iCol==pTab->nCol ){  in sqlite3AlterRenameColumn()
657       zDb, pTab->zName, iCol, zNew, bQuote, iSchema==1,  in sqlite3AlterRenameColumn()
665       zDb, pTab->zName, iCol, zNew, bQuote  in sqlite3AlterRenameColumn()
710   int iCol;                       /* Index of column being renamed */  member
1011    && pExpr->iColumn==p->iCol   in renameColumnExprCb()
1016    && pExpr->iColumn==p->iCol  in renameColumnExprCb()
1471   int iCol = sqlite3_value_int(argv[5]);  in renameColumnFunc()  local
1490   if( iCol<0 ) return;  in renameColumnFunc()
1493   if( pTab==0 || iCol>=pTab->nCol ){  in renameColumnFunc()
1497   zOld = pTab->aCol[iCol].zCnName;  in renameColumnFunc()
1499   sCtx.iCol = ((iCol==pTab->iPKey) ? -1 : iCol);  in renameColumnFunc()
1532         if( iCol<sParse.pNewTable->nCol ){  in renameColumnFunc()
1534               &sParse, &sCtx, (void*)sParse.pNewTable->aCol[iCol].zCnName  in renameColumnFunc()
1537         if( sCtx.iCol<0 ){  in renameColumnFunc()
1559           if( bFKOnly==0 && pFKey->aCol[i].iFrom==iCol ){  in renameColumnFunc()
2068   int iCol = sqlite3_value_int(argv[2]);  in dropColumnFunc()  local
2086   if( pTab==0 || pTab->nCol==1 || iCol>=pTab->nCol ){   in dropColumnFunc()
2092   pCol = renameTokenFind(&sParse, 0, (void*)pTab->aCol[iCol].zCnName);  in dropColumnFunc()
2093   if( iCol<pTab->nCol-1 ){  in dropColumnFunc()
2095     pEnd = renameTokenFind(&sParse, 0, (void*)pTab->aCol[iCol+1].zCnName);  in dropColumnFunc()
2131   int iCol;                       /* Index of column zCol in pTab->aCol[] */  in sqlite3AlterDropColumn()  local
2151   iCol = sqlite3ColumnIndex(pTab, zCol);  in sqlite3AlterDropColumn()
2152   if( iCol<0 ){  in sqlite3AlterDropColumn()
2159   if( pTab->aCol[iCol].colFlags & (COLFLAG_PRIMKEY|COLFLAG_UNIQUE) ){  in sqlite3AlterDropColumn()
2161         (pTab->aCol[iCol].colFlags&COLFLAG_PRIMKEY) ? "PRIMARY KEY" : "UNIQUE",  in sqlite3AlterDropColumn()
2189       , zDb, iDb, iCol, pTab->zName  in sqlite3AlterDropColumn()
2197   if( pParse->nErr==0 && (pTab->aCol[iCol].colFlags & COLFLAG_VIRTUAL)==0 ){  in sqlite3AlterDropColumn()
2223       if( i!=iCol && (pTab->aCol[i].colFlags & COLFLAG_VIRTUAL)==0 ){  in sqlite3AlterDropColumn()
2227           int iColPos = sqlite3TableColumnToIndex(pPk, iCol);  in sqlite3AlterDropColumn()