SQLite

Check-in [43e8b143]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:When populating an ephemeral b-tree for the RHS of an IN(...) clause, avoid applying an affinity to a value that may be used later on for some other purpose. Fix for [c7a117190].
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: 43e8b14314d876178d487c3b519296ac1de065fdcaa70768e40d684015bceb9d
User & Date: dan 2019-08-17 19:13:49
References
2019-08-17
19:14 Closed ticket [c7a11719]: WHERE clause erroneously influences value of fetched column from view plus 6 other changes (artifact: fba835a5 user: dan)
Context
2019-08-17
19:31
Fix the new ability to unregister virtual table modules so that it works for the automatic PRAGMA virtual tables. (check-in: 5d6f4dfe user: drh tags: trunk)
19:13
When populating an ephemeral b-tree for the RHS of an IN(...) clause, avoid applying an affinity to a value that may be used later on for some other purpose. Fix for [c7a117190]. (check-in: 43e8b143 user: dan tags: trunk)
17:07
Ensure the functions that appear to be constant are not factored out of expression that originate on the right-hand side of a LEFT JOIN. Ticket [6710d2f7a13a2997] (check-in: 500c9152 user: drh tags: trunk)
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/expr.c.

2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
    ** that columns affinity when building index keys. If <expr> is not
    ** a column, use numeric affinity.
    */
    char affinity;            /* Affinity of the LHS of the IN */
    int i;
    ExprList *pList = pExpr->x.pList;
    struct ExprList_item *pItem;
    int r1, r2, r3;
    affinity = sqlite3ExprAffinity(pLeft);
    if( affinity<=SQLITE_AFF_NONE ){
      affinity = SQLITE_AFF_BLOB;
    }
    if( pKeyInfo ){
      assert( sqlite3KeyInfoIsWriteable(pKeyInfo) );
      pKeyInfo->aColl[0] = sqlite3ExprCollSeq(pParse, pExpr->pLeft);







|







2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
    ** that columns affinity when building index keys. If <expr> is not
    ** a column, use numeric affinity.
    */
    char affinity;            /* Affinity of the LHS of the IN */
    int i;
    ExprList *pList = pExpr->x.pList;
    struct ExprList_item *pItem;
    int r1, r2;
    affinity = sqlite3ExprAffinity(pLeft);
    if( affinity<=SQLITE_AFF_NONE ){
      affinity = SQLITE_AFF_BLOB;
    }
    if( pKeyInfo ){
      assert( sqlite3KeyInfoIsWriteable(pKeyInfo) );
      pKeyInfo->aColl[0] = sqlite3ExprCollSeq(pParse, pExpr->pLeft);
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
      if( addrOnce && !sqlite3ExprIsConstant(pE2) ){
        sqlite3VdbeChangeToNoop(v, addrOnce);
        ExprClearProperty(pExpr, EP_Subrtn);
        addrOnce = 0;
      }

      /* Evaluate the expression and insert it into the temp table */
      r3 = sqlite3ExprCodeTarget(pParse, pE2, r1);
      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 ){
    sqlite3VdbeChangeP4(v, addr, (void *)pKeyInfo, P4_KEYINFO);
  }







|
|
|







2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
      if( addrOnce && !sqlite3ExprIsConstant(pE2) ){
        sqlite3VdbeChangeToNoop(v, addrOnce);
        ExprClearProperty(pExpr, EP_Subrtn);
        addrOnce = 0;
      }

      /* Evaluate the expression and insert it into the temp table */
      sqlite3ExprCode(pParse, pE2, r1);
      sqlite3VdbeAddOp4(v, OP_MakeRecord, r1, 1, r2, &affinity, 1);
      sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iTab, r2, r1, 1);
    }
    sqlite3ReleaseTempReg(pParse, r1);
    sqlite3ReleaseTempReg(pParse, r2);
  }
  if( pKeyInfo ){
    sqlite3VdbeChangeP4(v, addr, (void *)pKeyInfo, P4_KEYINFO);
  }

Changes to test/in5.test.

244
245
246
247
248
249
250

















251
252
  CREATE TABLE t9(a INTEGER PRIMARY KEY);
  INSERT INTO t9 VALUES (44), (45);
}
do_execsql_test 9.1 {
  SELECT * FROM t9 WHERE a IN (44, 45, 44, 45)
} {44 45}



















finish_test







>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>


244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
  CREATE TABLE t9(a INTEGER PRIMARY KEY);
  INSERT INTO t9 VALUES (44), (45);
}
do_execsql_test 9.1 {
  SELECT * FROM t9 WHERE a IN (44, 45, 44, 45)
} {44 45}

#-------------------------------------------------------------------------
# Test that ticket c7a117190 is fixed.
#
reset_db
do_execsql_test 9.0 {
  CREATE TABLE t0(c0);
  CREATE VIEW v0(c0) AS SELECT LOWER(CAST('1e500' AS TEXT)) FROM t0;
  INSERT INTO t0(c0) VALUES (NULL);
}

do_execsql_test 9.1 {
  SELECT lower('1e500') FROM t0 WHERE rowid NOT IN (0, 0, lower('1e500'));
} {1e500}

do_execsql_test 9.2 {
  SELECT lower('1e500') FROM t0 WHERE rowid != lower('1e500');
} {1e500}

finish_test