SQLite

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** $Id: vdbe.c,v 1.540 2006/01/30 15:34:23 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>
#include "vdbeInt.h"

/*

    db->flags |= SQLITE_InternChanges;
  }else if( pOp->p2==1 ){
    /* Record changes in the file format */
    pDb->pSchema->file_format = pTos->i;
  }
  assert( (pTos->flags & MEM_Dyn)==0 );
  pTos--;
  if( pOp->p1==1 ){
    /* Invalidate all prepared statements whenever the TEMP database
    ** schema is changed.  Ticket #1644 */
    sqlite3ExpirePreparedStatements(db);
  }
  break;
}

/* Opcode: VerifyCookie P1 P2 *
**
** Check the value of global database parameter number 0 (the
** schema version) and make sure it is equal to P2.  

# 2006 January 30
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.
#
# This file implements tests to verify that ticket #1644 is
# fixed.  Ticket #1644 complains that precompiled statements
# are not expired correctly as a result of changes to TEMP
# views and triggers.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl


# Create two tables T1 and T2 and make V1 point to T1.
do_test tkt1644-1.1 {
  execsql {
    CREATE TABLE t1(a);
    INSERT INTO t1 VALUES(1);
    CREATE TABLE t2(b);
    INSERT INTO t2 VALUES(99);
    CREATE TEMP VIEW v1 AS SELECT * FROM t1;
    SELECT * FROM v1;
  }
} {1}

# The "SELECT * FROM v1" should be in the TCL interface cache below.
# It will continue to point to T1 unless the cache is invalidated when
# the view changes.
#
do_test tkt1644-1.2 {
  execsql {
    DROP VIEW v1;
    CREATE TEMP VIEW v1 AS SELECT * FROM t2;
    SELECT * FROM v1;
  }
} {99}

# Cache an access to the T1 table.
#
do_test tkt1644-1.3 {
  execsql {
    SELECT * FROM t1;
  }
} {1}

# Create a temp table T1.  Make sure the cache is invalidated so that
# the statement is recompiled and refers to the empty temp table.
#
do_test tkt1644-1.4 {
  execsql {
    CREATE TEMP TABLE t1(x);
  }
  execsql {
    SELECT * FROM t1;
  }
} {}


finish_test