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Overview
| Comment: | When applying the IN_INDEX_NOOP optimization and the LHS has REAL affinity, also apply REAL affinity to each element of the RHS. Ticket [2841e99d104c6436]. |
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| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
88833a9c2849c959a37a80e0e4d2b211 |
| User & Date: | drh 2019-09-02 02:21:58.055 |
References
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2019-09-02
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| 22:13 | Fix a bug introduced earlier today by check-in [88833a9c2849c959]. Ticket [29f635e0af71234b] (check-in: 6e7b4527d3 user: drh tags: trunk) | |
Context
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2019-09-02
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| 14:46 | Fix a potential crash in fts5 caused by using an auxiliary function on a "special" query like '*id' or '*reads'. (check-in: 9490683ae8 user: dan tags: trunk) | |
| 02:21 | When applying the IN_INDEX_NOOP optimization and the LHS has REAL affinity, also apply REAL affinity to each element of the RHS. Ticket [2841e99d104c6436]. (check-in: 88833a9c28 user: drh tags: trunk) | |
| 01:25 | Fix an obsolete comment that defines the meaning of one of the parameters to the sqlite3FindInIndex() subroutine. No changes to code. (check-in: 0c946f0846 user: drh tags: trunk) | |
Changes
Changes to src/expr.c.
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if( eType==IN_INDEX_NOOP ){
ExprList *pList = pExpr->x.pList;
CollSeq *pColl = sqlite3ExprCollSeq(pParse, pExpr->pLeft);
int labelOk = sqlite3VdbeMakeLabel(pParse);
int r2, regToFree;
int regCkNull = 0;
int ii;
int bLhsReal; /* True if the LHS of the IN has REAL affinity */
assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
if( destIfNull!=destIfFalse ){
regCkNull = sqlite3GetTempReg(pParse);
sqlite3VdbeAddOp3(v, OP_BitAnd, rLhs, rLhs, regCkNull);
}
bLhsReal = sqlite3ExprAffinity(pExpr->pLeft)==SQLITE_AFF_REAL;
for(ii=0; ii<pList->nExpr; ii++){
r2 = sqlite3ExprCodeTemp(pParse, pList->a[ii].pExpr, ®ToFree);
if( bLhsReal ){
sqlite3VdbeAddOp4(v, OP_Affinity, r2, 1, 0, "E", P4_STATIC);
}
if( regCkNull && sqlite3ExprCanBeNull(pList->a[ii].pExpr) ){
sqlite3VdbeAddOp3(v, OP_BitAnd, regCkNull, r2, regCkNull);
}
if( ii<pList->nExpr-1 || destIfNull!=destIfFalse ){
sqlite3VdbeAddOp4(v, OP_Eq, rLhs, labelOk, r2,
(void*)pColl, P4_COLLSEQ);
VdbeCoverageIf(v, ii<pList->nExpr-1);
|
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Changes to test/in.test.
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do_execsql_test in-18.1 {
DROP TABLE IF EXISTS t0;
CREATE TABLE t0(c0 INT UNIQUE);
INSERT INTO t0(c0) VALUES (1);
SELECT * FROM t0 WHERE '1' IN (t0.c0);
} {}
# 2019-09-02 ticket https://www.sqlite.org/src/info/2841e99d104c6436
# For the IN_INDEX_NOOP optimization, apply REAL affinity to the LHS
# values prior to comparison if the RHS has REAL affinity.
#
do_execsql_test in-19.1 {
DROP TABLE IF EXISTS t0;
CREATE TABLE t0(c0 REAL UNIQUE);
INSERT INTO t0(c0) VALUES(2.07093491255203046E18);
SELECT 1 FROM t0 WHERE c0 IN ('2070934912552030444');
} {1}
do_execsql_test in-19.2 {
SELECT c0 IN ('2070934912552030444') FROM t0;
} {1}
do_execsql_test in-19.3 {
SELECT c0 IN ('2070934912552030444',2,3) FROM t0;
} {1}
finish_test
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