sqlite3SelectPrep(pParse, pStep->pSelect, &sNC);
      if( pParse->nErr ) rc = pParse->rc;
    }
    if( rc==SQLITE_OK && pStep->zTarget ){
      Table *pTarget = sqlite3LocateTable(pParse, 0, pStep->zTarget, zDb);
      if( pTarget==0 ){
        rc = SQLITE_ERROR;
      }else if( SQLITE_OK==(rc = sqlite3ViewGetColumnNames(pParse, pTarget)) ){
        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 ){

  ** to the elements of the FROM clause.  But we do not want these changes
  ** to be permanent.  So the computation is done on a copy of the SELECT
  ** statement that defines the view.
  */
  assert( pTable->pSelect );
  pSel = sqlite3SelectDup(db, pTable->pSelect, 0);
  if( pSel ){
#ifndef SQLITE_OMIT_ALTERTABLE
    u8 eParseMode = pParse->eParseMode;
    pParse->eParseMode = PARSE_MODE_NORMAL;
#endif
    n = pParse->nTab;
    sqlite3SrcListAssignCursors(pParse, pSel->pSrc);
    pTable->nCol = -1;
    db->lookaside.bDisable++;
#ifndef SQLITE_OMIT_AUTHORIZATION
    xAuth = db->xAuth;
    db->xAuth = 0;

    }else{
      pTable->nCol = 0;
      nErr++;
    }
    sqlite3DeleteTable(db, pSelTab);
    sqlite3SelectDelete(db, pSel);
    db->lookaside.bDisable--;
#ifndef SQLITE_OMIT_ALTERTABLE
    pParse->eParseMode = eParseMode;
#endif
  } else {
    nErr++;
  }
  pTable->pSchema->schemaFlags |= DB_UnresetViews;
  if( db->mallocFailed ){
    sqlite3DeleteColumnNames(db, pTable);
    pTable->aCol = 0;

  SELECT * FROM t16a ORDER BY a;
} {abc 1.25 99 xyzzy cba 5.5 98 fizzle}
do_execsql_test alter-16.2 {
  ALTER TABLE t16a RENAME TO t16a_rn;
  SELECT * FROM t16a_rn ORDER BY a;
} {abc 1.25 99 xyzzy cba 5.5 98 fizzle}

# 2018-09-16 ticket b41031ea2b5372378cb3d2d43cf9fe2a4a5c2510
#
ifcapable rtree {
  db close
  sqlite3 db :memory:
  do_execsql_test alter-17.100 {
    CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
    CREATE VIRTUAL TABLE t2 USING rtree(id,x0,x1);
    INSERT INTO t1 VALUES(1,'apple'),(2,'fig'),(3,'pear');
    INSERT INTO t2 VALUES(1,1.0,2.0),(2,2.0,3.0),(3,1.5,3.5);
    CREATE TRIGGER r1 AFTER UPDATE ON t1 BEGIN
      DELETE FROM t2 WHERE id = OLD.a;
    END;
    ALTER TABLE t1 RENAME TO t3;
    UPDATE t3 SET b='peach' WHERE a=2;
    SELECT * FROM t2 ORDER BY 1;
  } {1 1.0 2.0 3 1.5 3.5}
}

finish_test

do_execsql_test 13.1 {
  INSERT INTO t1 VALUES(1, 2);
}

do_catchsql_test 13.2 {
  ALTER TABLE t2 RENAME b TO y;
} {1 {error in trigger tr1 after rename: ambiguous column name: y}}

#-------------------------------------------------------------------------
reset_db

ifcapable rtree {
  do_execsql_test 14.0 {
    CREATE VIRTUAL TABLE rt USING rtree(id, minx, maxx, miny, maxy);

    CREATE TABLE "mytable" ( "fid" INTEGER PRIMARY KEY, "geom" BLOB);

    CREATE TRIGGER tr1 AFTER UPDATE OF "geom" ON "mytable" 
          WHEN OLD."fid" = NEW."fid" AND NEW."geom" IS NULL BEGIN 
      DELETE FROM rt WHERE id = OLD."fid"; 
    END;

    INSERT INTO mytable VALUES(1, X'abcd');
  }

  do_execsql_test 14.1 {
    UPDATE mytable SET geom = X'1234'
  }

  do_execsql_test 14.2 {
    ALTER TABLE mytable RENAME TO mytable_renamed;
  }

  do_execsql_test 14.3 {
    CREATE TRIGGER tr2 AFTER INSERT ON mytable_renamed BEGIN
      DELETE FROM rt WHERE id=(SELECT min(id) FROM rt);
    END;
  }

  do_execsql_test 14.4 {
    ALTER TABLE mytable_renamed RENAME TO mytable2;
  }
}

reset_db
do_execsql_test 14.5 {
  CREATE TABLE t1(a, b, c);
  CREATE VIEW v1 AS SELECT * FROM t1;
  CREATE TRIGGER xyz AFTER INSERT ON t1 BEGIN
    SELECT a, b FROM v1;
  END;
}
do_execsql_test 14.6 {
  ALTER TABLE t1 RENAME TO tt1;
}



finish_test