SQLite

  CREATE TABLE t7(a, b);
} {
  SELECT * FROM t7 WHERE a=? OR b=?
} {
  CREATE INDEX t7_idx_00000062 ON t7(b);
  CREATE INDEX t7_idx_00000061 ON t7(a);
  MULTI-INDEX OR
    INDEX 1
      SEARCH TABLE t7 USING INDEX t7_idx_00000061 (a=?) 
    INDEX 2
      SEARCH TABLE t7 USING INDEX t7_idx_00000062 (b=?)
}

# rowid terms.
#
do_setup_rec_test $tn.13.1 {
  CREATE TABLE t8(a, b);
} {

  */
  if( !ExprHasProperty(pExpr, EP_VarSelect) && pParse->iSelfTab==0 ){
    /* Reuse of the RHS is allowed */
    /* If this routine has already been coded, but the previous code
    ** might not have been invoked yet, so invoke it now as a subroutine. 
    */
    if( ExprHasProperty(pExpr, EP_Subrtn) ){
      int addr = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v);
      if( ExprHasProperty(pExpr, EP_xIsSelect) ){
        ExplainQueryPlan((pParse, 0, "REUSE LIST SUBQUERY %d",
              pExpr->x.pSelect->selId));
      }
      sqlite3VdbeAddOp2(v, OP_Gosub, pExpr->y.sub.regReturn,
                        pExpr->y.sub.iAddr);
      sqlite3VdbeAddOp2(v, OP_OpenDup, iTab, pExpr->iTable);
      sqlite3VdbeJumpHere(v, addr);
      return;
    }

    /* Begin coding the subroutine */
    ExprSetProperty(pExpr, EP_Subrtn);
    pExpr->y.sub.regReturn = ++pParse->nMem;
    pExpr->y.sub.iAddr =

    ));
    assert( !isRowid );
    /* If the LHS and RHS of the IN operator do not match, that
    ** error will have been caught long before we reach this point. */
    if( ALWAYS(pEList->nExpr==nVal) ){
      SelectDest dest;
      int i;
      sqlite3SelectDestInit(&dest, SRT_Set, iTab);
      dest.zAffSdst = exprINAffinity(pParse, pExpr);
      pSelect->iLimit = 0;
      testcase( pSelect->selFlags & SF_Distinct );
      testcase( pKeyInfo==0 ); /* Caused by OOM in sqlite3KeyInfoAlloc() */
      if( sqlite3Select(pParse, pSelect, &dest) ){
        sqlite3DbFree(pParse->db, dest.zAffSdst);
        sqlite3KeyInfoUnref(pKeyInfo);

      if( addrOnce && !sqlite3ExprIsConstant(pE2) ){
        sqlite3VdbeChangeToNoop(v, addrOnce);
        addrOnce = 0;
      }

      /* Evaluate the expression and insert it into the temp table */
      if( isRowid && sqlite3ExprIsInteger(pE2, &iValToIns) ){
        sqlite3VdbeAddOp3(v, OP_InsertInt, iTab, r2, iValToIns);
      }else{
        r3 = sqlite3ExprCodeTarget(pParse, pE2, r1);
        if( isRowid ){
          sqlite3VdbeAddOp2(v, OP_MustBeInt, r3,
                            sqlite3VdbeCurrentAddr(v)+2);
          VdbeCoverage(v);
          sqlite3VdbeAddOp3(v, OP_Insert, iTab, r2, r3);
        }else{
          sqlite3VdbeAddOp4(v, OP_MakeRecord, r3, 1, r2, &affinity, 1);
          sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iTab, r2, r3, 1);
        }
      }
    }
    sqlite3ReleaseTempReg(pParse, r1);
    sqlite3ReleaseTempReg(pParse, r2);
  }
  if( pKeyInfo ){

  Select *pSel;               /* SELECT statement to encode */
  SelectDest dest;            /* How to deal with SELECT result */
  int nReg;                   /* Registers to allocate */
  Expr *pLimit;               /* New limit expression */

  Vdbe *v = pParse->pVdbe;
  assert( v!=0 );
  testcase( pExpr->op==TK_EXISTS );
  testcase( pExpr->op==TK_SELECT );
  assert( pExpr->op==TK_EXISTS || pExpr->op==TK_SELECT );
  assert( ExprHasProperty(pExpr, EP_xIsSelect) );
  pSel = pExpr->x.pSelect;

  /* The evaluation of the EXISTS/SELECT must be repeated every time it
  ** is encountered if any of the following is true:
  **
  **    *  The right-hand side is a correlated subquery
  **    *  The right-hand side is an expression list containing variables
  **    *  We are inside a trigger
  **
  ** If all of the above are false, then we can run this code just once
  ** save the results, and reuse the same result on subsequent invocations.
  */
  if( !ExprHasProperty(pExpr, EP_VarSelect) ){
    /* If this routine has already been coded, then invoke it as a
    ** subroutine. */
    if( ExprHasProperty(pExpr, EP_Subrtn) ){
      ExplainQueryPlan((pParse, 0, "REUSE SUBQUERY %d", pSel->selId));
      sqlite3VdbeAddOp2(v, OP_Gosub, pExpr->y.sub.regReturn,
                        pExpr->y.sub.iAddr);
      return pExpr->iTable;
    }

    /* Begin coding the subroutine */
    ExprSetProperty(pExpr, EP_Subrtn);

  **
  ** If this is an EXISTS, write an integer 0 (not exists) or 1 (exists)
  ** into a register and return that register number.
  **
  ** In both cases, the query is augmented with "LIMIT 1".  Any 
  ** preexisting limit is discarded in place of the new LIMIT 1.
  */






  ExplainQueryPlan((pParse, 1, "%sSCALAR SUBQUERY %d",
        addrOnce?"":"CORRELATED ", pSel->selId));
  nReg = pExpr->op==TK_SELECT ? pSel->pEList->nExpr : 1;
  sqlite3SelectDestInit(&dest, 0, pParse->nMem+1);
  pParse->nMem += nReg;
  if( pExpr->op==TK_SELECT ){
    dest.eDest = SRT_Mem;
    dest.iSdst = dest.iSDParm;
    dest.nSdst = nReg;

# define sqlite3VdbeVerifyAbortable(A,B)
#endif
VdbeOp *sqlite3VdbeAddOpList(Vdbe*, int nOp, VdbeOpList const *aOp,int iLineno);
#ifndef SQLITE_OMIT_EXPLAIN
  void sqlite3VdbeExplain(Parse*,u8,const char*,...);
  void sqlite3VdbeExplainPop(Parse*);
  int sqlite3VdbeExplainParent(Parse*);
  void sqlite3ExplainBreakpoint(const char*,const char*);
# define ExplainQueryPlan(P)        sqlite3VdbeExplain P
# define ExplainQueryPlanPop(P)     sqlite3VdbeExplainPop(P)
# define ExplainQueryPlanParent(P)  sqlite3VdbeExplainParent(P)
#else
# define ExplainQueryPlan(P)
# define ExplainQueryPlanPop(P)
# define ExplainQueryPlanParent(P) 0
# define sqlite3ExplainBreakpoint(A,B) /*no-op*/
#endif
#if defined(SQLITE_DEBUG) && !defined(SQLITE_OMIT_EXPLAIN)
  void sqlite3ExplainBreakpoint(const char*,const char*);
#else
# define sqlite3ExplainBreakpoint(A,B) /*no-op*/
#endif
void sqlite3VdbeAddParseSchemaOp(Vdbe*,int,char*);
void sqlite3VdbeChangeOpcode(Vdbe*, u32 addr, u8);
void sqlite3VdbeChangeP1(Vdbe*, u32 addr, int P1);
void sqlite3VdbeChangeP2(Vdbe*, u32 addr, int P2);
void sqlite3VdbeChangeP3(Vdbe*, u32 addr, int P3);
void sqlite3VdbeChangeP5(Vdbe*, u16 P5);

  VdbeOp *pOp;
  if( pParse->addrExplain==0 ) return 0;
  pOp = sqlite3VdbeGetOp(pParse->pVdbe, pParse->addrExplain);
  return pOp->p2;
}

/*
** Set a debugger breakpoint on the following routine in order to
** monitor the EXPLAIN QUERY PLAN code generation.
*/
#if defined(SQLITE_DEBUG)
void sqlite3ExplainBreakpoint(const char *z1, const char *z2){
  (void)z1;
  (void)z2;
}
#endif

/*
** Add a new OP_ opcode.
**
** If the bPush flag is true, then make this opcode the parent for
** subsequent Explains until sqlite3VdbeExplainPop() is called.
*/
void sqlite3VdbeExplain(Parse *pParse, u8 bPush, const char *zFmt, ...){
#if !defined(SQLITE_DEBUG)
  if( pParse->explain==2 )
#endif
  {
    char *zMsg;
    Vdbe *v;
    va_list ap;
    int iThis;
    va_start(ap, zFmt);
    zMsg = sqlite3VMPrintf(pParse->db, zFmt, ap);
    va_end(ap);
    v = pParse->pVdbe;
    iThis = v->nOp;
    sqlite3VdbeAddOp4(v, OP_Explain, iThis, pParse->addrExplain, 0,
                      zMsg, P4_DYNAMIC);
    sqlite3ExplainBreakpoint(bPush?"PUSH":"", sqlite3VdbeGetOp(v,-1)->p4.z);
    if( bPush){
      pParse->addrExplain = iThis;
    }
  }
}

/*
** Pop the EXPLAIN QUERY PLAN stack one level.
*/
void sqlite3VdbeExplainPop(Parse *pParse){
  sqlite3ExplainBreakpoint("POP", 0);
  pParse->addrExplain = sqlite3VdbeExplainParent(pParse);
}
#endif /* SQLITE_OMIT_EXPLAIN */

/*
** Add an OP_ParseSchema opcode.  This routine is broken out from
** sqlite3VdbeAddOp4() since it needs to also needs to mark all btrees

      sqlite3_str_appendf(&str, " (~%llu rows)",
             sqlite3LogEstToInt(pLoop->nOut));
    }else{
      sqlite3_str_append(&str, " (~1 row)", 9);
    }
#endif
    zMsg = sqlite3StrAccumFinish(&str);
    sqlite3ExplainBreakpoint("",zMsg);
    ret = sqlite3VdbeAddOp4(v, OP_Explain, sqlite3VdbeCurrentAddr(v),
                            pParse->addrExplain, 0, zMsg,P4_DYNAMIC);
  }
  return ret;
}
#endif /* SQLITE_OMIT_EXPLAIN */

             || ExprHasProperty(pOrExpr, EP_FromJoin) 
        );
        if( pAndExpr ){
          pAndExpr->pLeft = pOrExpr;
          pOrExpr = pAndExpr;
        }
        /* Loop through table entries that match term pOrTerm. */
        ExplainQueryPlan((pParse, 1, "INDEX %d", ii+1));
        WHERETRACE(0xffff, ("Subplan for OR-clause:\n"));
        pSubWInfo = sqlite3WhereBegin(pParse, pOrTab, pOrExpr, 0, 0,
                                      wctrlFlags, iCovCur);
        assert( pSubWInfo || pParse->nErr || db->mallocFailed );
        if( pSubWInfo ){
          WhereLoop *pSubLoop;
          int addrExplain = sqlite3WhereExplainOneScan(

            pCov = pSubLoop->u.btree.pIndex;
          }else{
            pCov = 0;
          }

          /* Finish the loop through table entries that match term pOrTerm. */
          sqlite3WhereEnd(pSubWInfo);
          ExplainQueryPlanPop(pParse);
        }
      }
    }
    ExplainQueryPlanPop(pParse);
    pLevel->u.pCovidx = pCov;
    if( pCov ) pLevel->iIdxCur = iCovCur;
    if( pAndExpr ){

   WHERE y.sheep_no IS NULL
   ORDER BY x.registering_flock;
} {
  QUERY PLAN
  |--MATERIALIZE xxxxxx
  |  |--SCAN TABLE sheep AS s
  |  |--SEARCH TABLE flock_owner AS prev USING INDEX sqlite_autoindex_flock_owner_1 (flock_no=? AND owner_change_date<?)
  |  `--CORRELATED SCALAR SUBQUERY xxxxxx
  |     `--SEARCH TABLE flock_owner AS later USING COVERING INDEX sqlite_autoindex_flock_owner_1 (flock_no=? AND owner_change_date>? AND owner_change_date<?)
  |--SCAN TABLE sheep AS x USING INDEX sheep_reg_flock_index
  `--SEARCH SUBQUERY xxxxxx AS y USING AUTOMATIC COVERING INDEX (sheep_no=?)
}


do_execsql_test autoindex1-700 {

} {SCAN TABLE t1 VIRTUAL TABLE INDEX 0:a EQ ?}

do_eqp_test 1.3 {
  SELECT * FROM t1 WHERE a = 'abc' OR b = 'def';
} {
  QUERY PLAN
  `--MULTI-INDEX OR
     |--INDEX 1
     |  `--SCAN TABLE t1 VIRTUAL TABLE INDEX 0:a EQ ?
     `--INDEX 2
        `--SCAN TABLE t1 VIRTUAL TABLE INDEX 0:b EQ ?
}

do_eqp_test 1.4 {
  SELECT * FROM t1 WHERE a LIKE 'abc%' OR b = 'def';
} {
  QUERY PLAN
  `--MULTI-INDEX OR
     |--INDEX 1
     |  `--SCAN TABLE t1 VIRTUAL TABLE INDEX 0:a LIKE ?
     `--INDEX 2
        `--SCAN TABLE t1 VIRTUAL TABLE INDEX 0:b EQ ?
}

do_execsql_test 1.5 {
  CREATE TABLE ttt(a, b, c);

  INSERT INTO ttt VALUES(1, 'two',   'three');
  INSERT INTO ttt VALUES(2, 'one',   'two');

  }

  do_eqp_test 2.2 {
    SELECT * FROM t2 WHERE x LIKE 'abc%' OR y = 'def'
  } [string map {"\n  " \n} {
    QUERY PLAN
    `--MULTI-INDEX OR
       |--INDEX 1
       |  `--SEARCH TABLE t2 USING INDEX t2x (x>? AND x<?)
       `--INDEX 2
          `--SEARCH TABLE t2 USING INDEX t2y (y=?)
  }]
}

#-------------------------------------------------------------------------
# Test that any PRIMARY KEY within a sqlite3_decl_vtab() CREATE TABLE 
# statement is currently ignored.
#

do_eqp_test 3.2 {
  SELECT a FROM t5 
  WHERE b IS NULL OR c IS NULL OR d IS NULL 
  ORDER BY a;
} {
  QUERY PLAN
  |--MULTI-INDEX OR
  |  |--INDEX 1
  |  |  `--SEARCH TABLE t5 USING INDEX t5b (b=?)
  |  |--INDEX 2
  |  |  `--SEARCH TABLE t5 USING INDEX t5c (c=?)
  |  `--INDEX 3
  |     `--SEARCH TABLE t5 USING INDEX t5d (d=?)
  `--USE TEMP B-TREE FOR ORDER BY
}

#-------------------------------------------------------------------------
# If there is no likelihood() or stat3 data, SQLite assumes that a closed
# range scan (e.g. one constrained by "col BETWEEN ? AND ?" constraint)
# visits 1/64 of the rows in a table.

}

do_eqp_test 6.2 {
  SELECT a FROM t3 WHERE (b BETWEEN 2 AND 4) OR c=100 ORDER BY a
} {
  QUERY PLAN
  |--MULTI-INDEX OR
  |  |--INDEX 1
  |  |  `--SEARCH TABLE t3 USING INDEX t3i1 (b>? AND b<?)
  |  `--INDEX 2
  |     `--SEARCH TABLE t3 USING INDEX t3i2 (c=?)
  `--USE TEMP B-TREE FOR ORDER BY
}

#-------------------------------------------------------------------------
#
reset_db
do_execsql_test 7.1 {

do_eqp_test 7.2 {
  SELECT a FROM t1
     WHERE (b>=950 AND b<=1010) OR (b IS NULL AND c NOT NULL)
  ORDER BY a
} {
  QUERY PLAN
  |--MULTI-INDEX OR
  |  |--INDEX 1
  |  |  `--SEARCH TABLE t1 USING INDEX t1b (b>? AND b<?)
  |  `--INDEX 2
  |     `--SEARCH TABLE t1 USING INDEX t1b (b=?)
  `--USE TEMP B-TREE FOR ORDER BY
}

do_eqp_test 7.3 {
  SELECT rowid FROM t1
  WHERE (+b IS NULL AND c NOT NULL AND d NOT NULL)
        OR (b NOT NULL AND c IS NULL AND d NOT NULL)

}

do_eqp_test 1.2 {
  SELECT * FROM t2, t1 WHERE t1.a=1 OR t1.b=2;
} {
  QUERY PLAN
  |--MULTI-INDEX OR
  |  |--INDEX 1
  |  |  `--SEARCH TABLE t1 USING INDEX i1 (a=?)
  |  `--INDEX 2
  |     `--SEARCH TABLE t1 USING INDEX i2 (b=?)
  `--SCAN TABLE t2
}
do_eqp_test 1.3 {
  SELECT * FROM t2 CROSS JOIN t1 WHERE t1.a=1 OR t1.b=2;
} {
  QUERY PLAN
  |--SCAN TABLE t2
  `--MULTI-INDEX OR
     |--INDEX 1
     |  `--SEARCH TABLE t1 USING INDEX i1 (a=?)
     `--INDEX 2
        `--SEARCH TABLE t1 USING INDEX i2 (b=?)
}
do_eqp_test 1.3 {
  SELECT a FROM t1 ORDER BY a
} {
  QUERY PLAN
  `--SCAN TABLE t1 USING COVERING INDEX i1
}

# Test cases eqp-3.* - tests for select statements that use sub-selects.
#
do_eqp_test 3.1.1 {
  SELECT (SELECT x FROM t1 AS sub) FROM t1;
} {
  QUERY PLAN
  |--SCAN TABLE t1
  `--SCALAR SUBQUERY xxxxxx
     `--SCAN TABLE t1 AS sub
}
do_eqp_test 3.1.2 {
  SELECT * FROM t1 WHERE (SELECT x FROM t1 AS sub);
} {
  QUERY PLAN
  |--SCAN TABLE t1
  `--SCALAR SUBQUERY xxxxxx
     `--SCAN TABLE t1 AS sub
}
do_eqp_test 3.1.3 {
  SELECT * FROM t1 WHERE (SELECT x FROM t1 AS sub ORDER BY y);
} {
  QUERY PLAN
  |--SCAN TABLE t1
  `--SCALAR SUBQUERY xxxxxx
     |--SCAN TABLE t1 AS sub
     `--USE TEMP B-TREE FOR ORDER BY
}
do_eqp_test 3.1.4 {
  SELECT * FROM t1 WHERE (SELECT x FROM t2 ORDER BY x);
} {
  QUERY PLAN
  |--SCAN TABLE t1
  `--SCALAR SUBQUERY xxxxxx
     `--SCAN TABLE t2 USING COVERING INDEX t2i1
}

det 3.2.1 {
  SELECT * FROM (SELECT * FROM t1 ORDER BY x LIMIT 10) ORDER BY y LIMIT 5
} {
  QUERY PLAN

     `--SCAN TABLE t2
}
det 3.3.3 {
  SELECT * FROM t1 WHERE EXISTS (SELECT y FROM t2 WHERE t1.x!=t2.x)
} {
  QUERY PLAN
  |--SCAN TABLE t1
  `--CORRELATED SCALAR SUBQUERY xxxxxx
     `--SCAN TABLE t2
}

#-------------------------------------------------------------------------
# Test cases eqp-4.* - tests for composite select statements.
#
do_eqp_test 4.1.1 {

    AND event.objid=thread.last
  ORDER BY 1;
} {
  QUERY PLAN
  |--MATERIALIZE xxxxxx
  |  |--SCAN TABLE forumpost AS x USING INDEX forumthread
  |  |--USING ROWID SEARCH ON TABLE private FOR IN-OPERATOR
  |  |--CORRELATED SCALAR SUBQUERY xxxxxx
  |  |  |--SEARCH TABLE forumpost USING COVERING INDEX forumthread (froot=?)
  |  |  `--USING ROWID SEARCH ON TABLE private FOR IN-OPERATOR
  |  `--USE TEMP B-TREE FOR ORDER BY
  |--SCAN SUBQUERY xxxxxx
  |--SEARCH TABLE blob USING INTEGER PRIMARY KEY (rowid=?)
  |--SEARCH TABLE event USING INTEGER PRIMARY KEY (rowid=?)
  `--USE TEMP B-TREE FOR ORDER BY
}

finish_test

  SELECT * FROM t1 LEFT JOIN t2 ON (
    t2.x = t1.x AND (t2.y=? OR (t2.y=? AND t2.z IS NOT NULL))
  );
} {
  QUERY PLAN
  |--SCAN TABLE t1
  `--MULTI-INDEX OR
     |--INDEX 1
     |  `--SEARCH TABLE t2 USING INDEX t2xy (x=? AND y=?)
     `--INDEX 2
        `--SEARCH TABLE t2 USING INDEX t2xy (x=? AND y=?)
}

do_execsql_test 7.3 {
  CREATE TABLE t3(x);

  CREATE TABLE t4(x, y, z);
  CREATE INDEX t4xy ON t4(x, y);

             AND entry_id IN (SELECT change_id
                              FROM object_changes
                               WHERE obj_context = 'exported_pools'));
  }
} {300 object_change 2048}
do_test tkt-80ba2-201 {
  db eval {
PRAGMA vdbe_debug=on;
PRAGMA vdbe_addoptrace=on;
    CREATE INDEX timeline_entry_id_idx on timeline(entry_id);
    SELECT entry_type,
           entry_types.name,
           entry_id
      FROM timeline JOIN entry_types ON entry_type = entry_types.id
     WHERE (entry_types.name = 'cli_command' AND entry_id=2114)
        OR (entry_types.name = 'object_change'

      AND t302.c3 > 1287603136
      AND (t301.c4 = 1407449685622784
           OR t301.c8 = 1407424651264000)
   ORDER BY t302.c5 LIMIT 200;
} {
  QUERY PLAN
  |--MULTI-INDEX OR
  |  |--INDEX 1
  |  |  `--SEARCH TABLE t301 USING COVERING INDEX t301_c4 (c4=?)
  |  `--INDEX 2
  |     `--SEARCH TABLE t301 USING INTEGER PRIMARY KEY (rowid=?)
  |--SEARCH TABLE t302 USING INDEX t302_c8_c3 (c8=? AND c3>?)
  `--USE TEMP B-TREE FOR ORDER BY
}

finish_test

  do_eqp_test where9-3.1 {
    SELECT t2.a FROM t1, t2
    WHERE t1.a=80 AND ((t1.c=t2.c AND t1.d=t2.d) OR t1.f=t2.f)
  } [string map {"\n  " \n} {
    QUERY PLAN
    |--SEARCH TABLE t1 USING INTEGER PRIMARY KEY (rowid=?)
    `--MULTI-INDEX OR
       |--INDEX 1
       |  `--SEARCH TABLE t2 USING INDEX t2d (d=?)
       `--INDEX 3
          `--SEARCH TABLE t2 USING COVERING INDEX t2f (f=?)
  }]
  do_eqp_test where9-3.2 {
    SELECT coalesce(t2.a,9999)
    FROM t1 LEFT JOIN t2 ON (t1.c+1=t2.c AND t1.d=t2.d) OR (t1.f||'x')=t2.f
    WHERE t1.a=80
  } [string map {"\n  " \n} {
    QUERY PLAN
    |--SEARCH TABLE t1 USING INTEGER PRIMARY KEY (rowid=?)
    `--MULTI-INDEX OR
       |--INDEX 1
       |  `--SEARCH TABLE t2 USING INDEX t2d (d=?)
       `--INDEX 2
          `--SEARCH TABLE t2 USING COVERING INDEX t2f (f=?)
  }]
} 

# Make sure that INDEXED BY and multi-index OR clauses play well with
# one another.
#
do_test where9-4.1 {

# the former is an equality test which is expected to return fewer rows.
#
do_eqp_test where9-5.1 {
  SELECT a FROM t1 WHERE b>1000 AND (c=31031 OR d IS NULL)
} {
  QUERY PLAN
  `--MULTI-INDEX OR
     |--INDEX 1
     |  `--SEARCH TABLE t1 USING INDEX t1c (c=?)
     `--INDEX 2
        `--SEARCH TABLE t1 USING INDEX t1d (d=?)
}

# In contrast, b=1000 is preferred over any OR-clause.
#
do_eqp_test where9-5.2 {
  SELECT a FROM t1 WHERE b=1000 AND (c=31031 OR d IS NULL)
} {SEARCH TABLE t1 USING INDEX t1b (b=?)}

}

do_eqp_test 1.1 {
  SELECT a FROM t1 WHERE b='b' OR c='x'
} {
  QUERY PLAN
  `--MULTI-INDEX OR
     |--INDEX 1
     |  `--SEARCH TABLE t1 USING INDEX i1 (b=?)
     `--INDEX 2
        `--SEARCH TABLE t1 USING INDEX i2 (c=?)
}

do_execsql_test 1.2 {
  SELECT a FROM t1 WHERE b='b' OR c='x'
} {2 3}

do_execsql_test 1.3 {

}

do_eqp_test 2.1 {
  SELECT a FROM t2 WHERE b='b' OR c='x'
} {
  QUERY PLAN
  `--MULTI-INDEX OR
     |--INDEX 1
     |  `--SEARCH TABLE t2 USING INDEX i3 (b=?)
     `--INDEX 2
        `--SEARCH TABLE t2 USING INDEX i4 (c=?)
}

do_execsql_test 2.2 {
  SELECT a FROM t2 WHERE b='b' OR c='x'
} {ii iii}

do_execsql_test 2.3 {

     SELECT * FROM c, w2, w1
     WHERE c.id=w2.pk AND c.id=w1.pk;
} {
  QUERY PLAN
  |--MATERIALIZE xxxxxx
  |  |--SETUP
  |  |  |--SCAN CONSTANT ROW
  |  |  `--SCALAR SUBQUERY xxxxxx
  |  |     `--SCAN TABLE w2
  |  `--RECURSIVE STEP
  |     |--SCAN TABLE w1
  |     `--SCAN TABLE c
  |--SCAN SUBQUERY xxxxxx
  |--SEARCH TABLE w2 USING INTEGER PRIMARY KEY (rowid=?)
  `--SEARCH TABLE w1 USING INTEGER PRIMARY KEY (rowid=?)