3379   int iCol = -1;       /* If >=0, step pCur->pStmt and use the i-th column */  in completionNext()  local
3390         iCol = -1;  in completionNext()
3398         iCol = 1;  in completionNext()
3422         iCol = 0;  in completionNext()
3448         iCol = 0;  in completionNext()
3453     if( iCol<0 ){  in completionNext()
3459         pCur->zCurrentRow = (const char*)sqlite3_column_text(pCur->pStmt, iCol);  in completionNext()
3460         pCur->szRow = sqlite3_column_bytes(pCur->pStmt, iCol);  in completionNext()
5847     int iCol;    /* 0 for start, 1 for stop, 2 for step */  in seriesBestIndex()  local
5850     iCol = pConstraint->iColumn - SERIES_COLUMN_START;  in seriesBestIndex()
5851     assert( iCol>=0 && iCol<=2 );  in seriesBestIndex()
5852     iMask = 1 << iCol;  in seriesBestIndex()
5853     if( iCol==0 ) bStartSeen = 1;  in seriesBestIndex()
5859       aIdx[iCol] = i;  in seriesBestIndex()
9311   int iCol;                       /* Constrained table column */  member
9729           pNew->iCol = pCons->iColumn;  in expertBestIndex()
9746       int iCol = pIdxInfo->aOrderBy[i].iColumn;  in expertBestIndex()  local
9747       if( iCol>=0 ){  in expertBestIndex()
9748         IdxConstraint *pNew = idxNewConstraint(&rc, p->pTab->aCol[iCol].zColl);  in expertBestIndex()
9750           pNew->iCol = iCol;  in expertBestIndex()
10080   IdxColumn *p = &pTab->aCol[pCons->iCol];  in idxAppendColDefn()
10140       int iCol = sqlite3_column_int(pInfo, 1);  in idxFindCompatible()  local
10146           if( pIter->iCol!=iCol ) continue;  in idxFindCompatible()
10157           if( pT->iCol!=iCol || sqlite3_stricmp(pT->zColl, zColl) ){  in idxFindCompatible()
10282     if( p->iCol==pCmp->iCol ) return 1;  in idxFindConstraint()
11509       int iCol = pIdx->aOrderBy[0].iColumn;  in dbdataBestIndex()  local
11511         pIdx->orderByConsumed = (iCol==0 || iCol==1);  in dbdataBestIndex()
11512       }else if( pIdx->nOrderBy==2 && pIdx->aOrderBy[1].desc==0 && iCol==0 ){  in dbdataBestIndex()