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Overview
Comment:Add simple tests for new sqlite3BtreeCursorHint() functionality.
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SHA1: 1efa6ed584172291edce78faf9021e577583d03b
User & Date: dan 2014-07-15 11:59:44
Context
2015-08-13
21:43
Convert the hint expression of the CursorHint opcode into a string for display by EXPLAIN. Leaf check-in: 12640cb2 user: drh tags: cursor-hints-displayP4
20:07
Merge in all the trunk changes from the previous year. This breaks the cursor-hint mechanism, but provides a baseline for trouble-shooting. check-in: 82a7a61b user: drh tags: cursor-hints
2014-07-15
11:59
Add simple tests for new sqlite3BtreeCursorHint() functionality. check-in: 1efa6ed5 user: dan tags: cursor-hints
2014-07-14
19:04
In the expression passed to sqlite3BtreeCursorHint() for the inner loops of joins, replace any TK_COLUMN references to columns in the outer loops with TK_REGISTER expressions (Expr.iTable indicates the specific register containing the value). There are no automated tests for this yet. check-in: f9dddd00 user: dan tags: cursor-hints
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to main.mk. 

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  $(TOP)/src/test8.c \
  $(TOP)/src/test9.c \
  $(TOP)/src/test_autoext.c \
  $(TOP)/src/test_async.c \
  $(TOP)/src/test_backup.c \
  $(TOP)/src/test_btree.c \
  $(TOP)/src/test_config.c \

  $(TOP)/src/test_demovfs.c \
  $(TOP)/src/test_devsym.c \
  $(TOP)/src/test_fs.c \
  $(TOP)/src/test_func.c \
  $(TOP)/src/test_hexio.c \
  $(TOP)/src/test_init.c \
  $(TOP)/src/test_intarray.c \








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  $(TOP)/src/test8.c \
  $(TOP)/src/test9.c \
  $(TOP)/src/test_autoext.c \
  $(TOP)/src/test_async.c \
  $(TOP)/src/test_backup.c \
  $(TOP)/src/test_btree.c \
  $(TOP)/src/test_config.c \
  $(TOP)/src/test_cursorhint.c \
  $(TOP)/src/test_demovfs.c \
  $(TOP)/src/test_devsym.c \
  $(TOP)/src/test_fs.c \
  $(TOP)/src/test_func.c \
  $(TOP)/src/test_hexio.c \
  $(TOP)/src/test_init.c \
  $(TOP)/src/test_intarray.c \

Changes to src/tclsqlite.c. 

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    extern int Sqlitetest5_Init(Tcl_Interp*);
    extern int Sqlitetest6_Init(Tcl_Interp*);
    extern int Sqlitetest7_Init(Tcl_Interp*);
    extern int Sqlitetest8_Init(Tcl_Interp*);
    extern int Sqlitetest9_Init(Tcl_Interp*);
    extern int Sqlitetestasync_Init(Tcl_Interp*);
    extern int Sqlitetest_autoext_Init(Tcl_Interp*);

    extern int Sqlitetest_demovfs_Init(Tcl_Interp *);
    extern int Sqlitetest_func_Init(Tcl_Interp*);
    extern int Sqlitetest_hexio_Init(Tcl_Interp*);
    extern int Sqlitetest_init_Init(Tcl_Interp*);
    extern int Sqlitetest_malloc_Init(Tcl_Interp*);
    extern int Sqlitetest_mutex_Init(Tcl_Interp*);
    extern int Sqlitetestschema_Init(Tcl_Interp*);
................................................................................
    Sqlitetest5_Init(interp);
    Sqlitetest6_Init(interp);
    Sqlitetest7_Init(interp);
    Sqlitetest8_Init(interp);
    Sqlitetest9_Init(interp);
    Sqlitetestasync_Init(interp);
    Sqlitetest_autoext_Init(interp);

    Sqlitetest_demovfs_Init(interp);
    Sqlitetest_func_Init(interp);
    Sqlitetest_hexio_Init(interp);
    Sqlitetest_init_Init(interp);
    Sqlitetest_malloc_Init(interp);
    Sqlitetest_mutex_Init(interp);
    Sqlitetestschema_Init(interp);








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    extern int Sqlitetest5_Init(Tcl_Interp*);
    extern int Sqlitetest6_Init(Tcl_Interp*);
    extern int Sqlitetest7_Init(Tcl_Interp*);
    extern int Sqlitetest8_Init(Tcl_Interp*);
    extern int Sqlitetest9_Init(Tcl_Interp*);
    extern int Sqlitetestasync_Init(Tcl_Interp*);
    extern int Sqlitetest_autoext_Init(Tcl_Interp*);
    extern int Sqlitetest_cursorhint_Init(Tcl_Interp*);
    extern int Sqlitetest_demovfs_Init(Tcl_Interp *);
    extern int Sqlitetest_func_Init(Tcl_Interp*);
    extern int Sqlitetest_hexio_Init(Tcl_Interp*);
    extern int Sqlitetest_init_Init(Tcl_Interp*);
    extern int Sqlitetest_malloc_Init(Tcl_Interp*);
    extern int Sqlitetest_mutex_Init(Tcl_Interp*);
    extern int Sqlitetestschema_Init(Tcl_Interp*);
................................................................................
    Sqlitetest5_Init(interp);
    Sqlitetest6_Init(interp);
    Sqlitetest7_Init(interp);
    Sqlitetest8_Init(interp);
    Sqlitetest9_Init(interp);
    Sqlitetestasync_Init(interp);
    Sqlitetest_autoext_Init(interp);
    Sqlitetest_cursorhint_Init(interp);
    Sqlitetest_demovfs_Init(interp);
    Sqlitetest_func_Init(interp);
    Sqlitetest_hexio_Init(interp);
    Sqlitetest_init_Init(interp);
    Sqlitetest_malloc_Init(interp);
    Sqlitetest_mutex_Init(interp);
    Sqlitetestschema_Init(interp);

Added src/test_cursorhint.c. 







































































































































































































































































































































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/*
** 2008 March 19
**
** 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.
**
*************************************************************************
** Code for testing all sorts of SQLite interfaces.  This code
** implements new SQL functions used by the test scripts.
*/
#include "sqlite3.h"
#include "tcl.h"
#include <stdlib.h>
#include <string.h>
#include <assert.h>

#include "sqliteInt.h"
#include "vdbeInt.h"

struct CursorHintGlobal {
  Tcl_Interp *interp;
  Tcl_Obj *pScript;
} cursorhintglobal;

static char *exprToString(Mem *aMem, Expr *pExpr){
  char *zRet = 0;
  char *zBinOp = 0;

  switch( pExpr->op ){
    case TK_STRING:
      zRet = sqlite3_mprintf("%Q", pExpr->u.zToken);
      break;

    case TK_INTEGER:
      zRet = sqlite3_mprintf("%d", pExpr->u.iValue);
      break;

    case TK_NULL:
      zRet = sqlite3_mprintf("%s", "NULL");
      break;

    case TK_REGISTER: {
      Mem *pMem = &aMem[pExpr->iTable];
      if( pMem->flags & MEM_Int ){
        zRet = sqlite3_mprintf("%lld", pMem->u.i);
      }
      else if( pMem->flags & MEM_Real ){
        zRet = sqlite3_mprintf("%f", pMem->r);
      }
      else if( pMem->flags & MEM_Str ){
        zRet = sqlite3_mprintf("%.*Q", pMem->n, pMem->z);
      }
      else if( pMem->flags & MEM_Blob ){
      }
      else{
        zRet = sqlite3_mprintf("%s", "NULL");
      }
      break;
    }

    case TK_COLUMN: {
      zRet = sqlite3_mprintf("col(%d)", (int)pExpr->iColumn);
      break;
    }

    case TK_LT:      zBinOp = "<";      break;
    case TK_LE:      zBinOp = "<=";     break;
    case TK_GT:      zBinOp = ">";      break;
    case TK_GE:      zBinOp = ">=";     break;
    case TK_NE:      zBinOp = "!=";     break;
    case TK_EQ:      zBinOp = "==";     break;
    case TK_IS:      zBinOp = "IS";     break;
    case TK_ISNOT:   zBinOp = "IS NOT"; break;
    case TK_AND:     zBinOp = "AND";    break;
    case TK_OR:      zBinOp = "OR";     break;
    case TK_PLUS:    zBinOp = "+";      break;
    case TK_STAR:    zBinOp = "*";      break;
    case TK_MINUS:   zBinOp = "-";      break;
    case TK_REM:     zBinOp = "%";      break;
    case TK_BITAND:  zBinOp = "&";      break;
    case TK_BITOR:   zBinOp = "|";      break;
    case TK_SLASH:   zBinOp = "/";      break;
    case TK_LSHIFT:  zBinOp = "<<";     break;
    case TK_RSHIFT:  zBinOp = ">>";     break;
    case TK_CONCAT:  zBinOp = "||";     break;

    default:
      zRet = sqlite3_mprintf("%s", "expr");
      break;
  }

  if( zBinOp ){
    zRet = sqlite3_mprintf("(%z %s %z)", 
        exprToString(aMem, pExpr->pLeft),
        zBinOp,
        exprToString(aMem, pExpr->pRight)
    );
  }

  return zRet;
}

void sqlite3BtreeCursorHintTest(Mem *aMem, Expr *pExpr){
  if( cursorhintglobal.pScript ){
    Tcl_Obj *pEval = Tcl_DuplicateObj(cursorhintglobal.pScript);
    char *zExpr;
    Tcl_Obj *pObj;
    Tcl_IncrRefCount(pEval);
    zExpr = exprToString(aMem, pExpr);
    pObj = Tcl_NewStringObj(zExpr, -1);
    sqlite3_free(zExpr);
    Tcl_ListObjAppendElement(cursorhintglobal.interp, pEval, pObj);
    Tcl_EvalObjEx(cursorhintglobal.interp, pEval, TCL_GLOBAL_ONLY);
    Tcl_DecrRefCount(pEval);
  }
}

/*
** Usage: cursorhint_hook SCRIPT
*/
static int install_cursorhint_hook(
  ClientData clientData, /* Pointer to sqlite3_enable_XXX function */
  Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
  int objc,              /* Number of arguments */
  Tcl_Obj *CONST objv[]  /* Command arguments */
){
  if( objc!=1 && objc!=2 ){
    Tcl_WrongNumArgs(interp, 1, objv, "?SCRIPT?");
    return TCL_ERROR;
  }
  if( cursorhintglobal.pScript ){
    Tcl_DecrRefCount(cursorhintglobal.pScript);
    memset(&cursorhintglobal, 0, sizeof(cursorhintglobal));
  }
  if( objc==2 ){
    cursorhintglobal.interp = interp;
    cursorhintglobal.pScript = Tcl_DuplicateObj(objv[1]);
  }
  return TCL_OK;
}

/*
** Register commands with the TCL interpreter.
*/
int Sqlitetest_cursorhint_Init(Tcl_Interp *interp){
  static struct {
     char *zName;
     Tcl_ObjCmdProc *xProc;
  } aObjCmd[] = {
     { "cursorhint_hook",    install_cursorhint_hook },
  };
  int i;
  for(i=0; i<sizeof(aObjCmd)/sizeof(aObjCmd[0]); i++){
    Tcl_CreateObjCommand(interp, aObjCmd[i].zName, aObjCmd[i].xProc, 0, 0);
  }
  sqlite3_initialize();
  return TCL_OK;
}

Changes to src/vdbe.c. 

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*/
case OP_CursorHint: {
  VdbeCursor *pC;

  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
  assert( pOp->p4type==P4_EXPR );
  pC = p->apCsr[pOp->p1];

  if( pC )  sqlite3BtreeCursorHint(pC->pCursor, pOp->p2, pOp->p4.pExpr);





  break;
}
#endif /* SQLITE_ENABLE_CURSOR_HINTS */

/* Opcode: Noop * * * * *
**
** Do nothing.  This instruction is often useful as a jump








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*/
case OP_CursorHint: {
  VdbeCursor *pC;

  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
  assert( pOp->p4type==P4_EXPR );
  pC = p->apCsr[pOp->p1];
  if( pC ){
    sqlite3BtreeCursorHint(pC->pCursor, pOp->p2, pOp->p4.pExpr);
#ifdef SQLITE_TEST
    void sqlite3BtreeCursorHintTest(Mem*, Expr*);
    sqlite3BtreeCursorHintTest(p->aMem, pOp->p4.pExpr);
#endif
  }
  break;
}
#endif /* SQLITE_ENABLE_CURSOR_HINTS */

/* Opcode: Noop * * * * *
**
** Do nothing.  This instruction is often useful as a jump

Changes to src/where.c. 

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){
  Parse *pParse = pWInfo->pParse;
  sqlite3 *db = pParse->db;
  Vdbe *v = pParse->pVdbe;
  WhereLevel *pLevel;
  Expr *pExpr = 0;
  int iCur;
  Bitmask msk;
  WhereClause *pWC;
  WhereTerm *pTerm;
  WhereLoop *pWLoop;
  int i, j;

  if( OptimizationDisabled(db, SQLITE_CursorHints) ) return;
  pLevel = &pWInfo->a[iLevel];








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){
  Parse *pParse = pWInfo->pParse;
  sqlite3 *db = pParse->db;
  Vdbe *v = pParse->pVdbe;
  WhereLevel *pLevel;
  Expr *pExpr = 0;
  int iCur;

  WhereClause *pWC;
  WhereTerm *pTerm;
  WhereLoop *pWLoop;
  int i, j;

  if( OptimizationDisabled(db, SQLITE_CursorHints) ) return;
  pLevel = &pWInfo->a[iLevel];

Added test/cursorhint.test. 



















































































































































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# 2014 July 15
#
# 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.
#

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

do_execsql_test 1.0 {
  CREATE TABLE t1(a,b);
  CREATE TABLE t2(x,y);
  INSERT INTO t1 VALUES(10, 15);
  INSERT INTO t1 VALUES(20, 25);
  INSERT INTO t2 VALUES('ten', 'fifteen');
  INSERT INTO t2 VALUES('twenty', 'twentyfive');
  PRAGMA automatic_index = 0;
}

proc H {expr} {
  lappend ::cursorhint $expr
}

proc do_cursorhint_test {tn sql hints} {
  cursorhint_hook H
  set ::cursorhint [list]
  set testbody [subst {
    execsql {$sql}
    set ::cursorhint
  }]
  uplevel [list do_test $tn $testbody [list {*}$hints]]
  cursorhint_hook
}


do_cursorhint_test 1.1 {
  SELECT * FROM t1 CROSS JOIN t2 WHERE a=x;
} {
  {(10 == col(0))} 
  {(20 == col(0))}
}

do_cursorhint_test 1.2 {
  SELECT * FROM t2 CROSS JOIN t1 WHERE a=x;
} {
  {(col(0) == 'ten')} 
  {(col(0) == 'twenty')}
}

do_cursorhint_test 1.3 {
  SELECT * FROM t1 CROSS JOIN t2 WHERE b=15;
} {
  {(col(1) == 15)} 
}

do_cursorhint_test 1.3 {
  SELECT * FROM t1 CROSS JOIN t2 WHERE y=b+1;
} {
  {(col(1) == (15 + 1))} 
  {(col(1) == (25 + 1))} 
}


finish_test

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