SQLite

  const char *zN = sqlite3_value_text(pObject);
  char *zErr;

  zErr = sqlite3_mprintf("error processing %s %s: %s", zT, zN, pParse->zErrMsg);
  sqlite3_result_error(pCtx, zErr, -1);
  sqlite3_free(zErr);
}

/*
** For each name in the the expression-list pEList (i.e. each
** pEList->a[i].zName) that matches the string in zOld, extract the 
** corresponding rename-token from Parse object pParse and add it
** to the RenameCtx pCtx.
*/
static void renameColumnElistNames(
  Parse *pParse, 
  RenameCtx *pCtx, 
  ExprList *pEList, 
  const char *zOld
){
  if( pEList ){
    int i;
    for(i=0; i<pEList->nExpr; i++){
      char *zName = pEList->a[i].zName;
      if( 0==sqlite3_stricmp(zName, zOld) ){
        renameTokenFind(pParse, pCtx, (void*)zName);
      }
    }
  }
}

/*
** For each name in the the id-list pIdList (i.e. each pIdList->a[i].zName) 
** that matches the string in zOld, extract the corresponding rename-token 
** from Parse object pParse and add it to the RenameCtx pCtx.
*/
static void renameColumnIdlistNames(
  Parse *pParse, 
  RenameCtx *pCtx, 
  IdList *pIdList, 
  const char *zOld
){
  if( pIdList ){
    int i;
    for(i=0; i<pIdList->nId; i++){
      char *zName = pIdList->a[i].zName;
      if( 0==sqlite3_stricmp(zName, zOld) ){
        renameTokenFind(pParse, pCtx, (void*)zName);
      }
    }
  }
}

/*
** SQL function:
**
**     sqlite_rename_column(zSql, iCol, bQuote, zNew, zTable, zOld)
**
**   0. zSql:     SQL statement to rewrite

        pStep=pStep->pNext
    ){
      if( pStep->pSelect ){
        sqlite3SelectPrep(&sParse, pStep->pSelect, &sNC);
        if( sParse.nErr ) rc = sParse.rc;
      }
      if( rc==SQLITE_OK && pStep->zTarget ){ 
        Table *pTarget = sqlite3LocateTable(&sParse, 0, 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);
          }
          assert( !pStep->pUpsert || (!pStep->pWhere && !pStep->pExprList) );
          if( pStep->pUpsert ){
            Upsert *pUpsert = pStep->pUpsert;
            assert( rc==SQLITE_OK );
            rc = sqlite3ResolveExprListNames(&sNC, pUpsert->pUpsertTarget);
            if( rc==SQLITE_OK ){
              ExprList *pUpsertSet = pUpsert->pUpsertSet;

              if( pTarget==pTab ){



                renameColumnElistNames(&sParse, &sCtx, pUpsertSet, zOld);
              }


              rc = sqlite3ResolveExprListNames(&sNC, pUpsertSet);
            }
            if( rc==SQLITE_OK ){
              rc = sqlite3ResolveExprNames(&sNC, pUpsert->pUpsertWhere);
            }
            if( rc==SQLITE_OK ){
              rc = sqlite3ResolveExprNames(&sNC, pUpsert->pUpsertTargetWhere);
            }
          }

          if( rc==SQLITE_OK && pTarget==pTab ){
            renameColumnIdlistNames(&sParse, &sCtx, pStep->pIdList, zOld);








            renameColumnElistNames(&sParse, &sCtx, pStep->pExprList, zOld);







          }
        }
      }
    }

    if( rc!=SQLITE_OK ) goto renameColumnFunc_done;

    /* Find tokens to edit in UPDATE OF clause */
    if( sParse.pTriggerTab==pTab ){

      renameColumnIdlistNames(&sParse, &sCtx,sParse.pNewTrigger->pColumns,zOld);




    }

    /* 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){

/*
** Register built-in functions used to help implement ALTER TABLE
*/
void sqlite3AlterFunctions(void){
  static FuncDef aAlterTableFuncs[] = {
    FUNCTION(sqlite_rename_table,   2, 0, 0, renameTableFunc),
    FUNCTION(sqlite_rename_column,  8, 0, 0, renameColumnFunc),
#ifndef SQLITE_OMIT_TRIGGER
    FUNCTION(sqlite_rename_trigger, 2, 0, 0, renameTriggerFunc),
#endif
#ifndef SQLITE_OMIT_FOREIGN_KEY
    FUNCTION(sqlite_rename_parent,  3, 0, 0, renameParentFunc),
#endif
  };
  sqlite3InsertBuiltinFuncs(aAlterTableFuncs, ArraySize(aAlterTableFuncs));
}
#endif  /* SQLITE_ALTER_TABLE */

  3 {
    CREATE TRIGGER tr1 AFTER INSERT ON x1 BEGIN
      INSERT INTO x1(i, t) VALUES(new.i+1, new.t||'1') 
        ON CONFLICT (tttttt) DO UPDATE SET t=i+1;
    END;
  } {no such column: tttttt}

  4 {
    CREATE TRIGGER tr1 AFTER INSERT ON x1 BEGIN
      INSERT INTO nosuchtable VALUES(new.i, new.t);
    END;
  } {no such table: main.nosuchtable}
} {
  do_execsql_test 13.2.$tn.1 "
    DROP TRIGGER IF EXISTS tr1;
    $trigger
  "

  do_catchsql_test 13.2.$tn.2 {