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Changes In Branch tabfunc-in-left-join Excluding Merge-Ins
This is equivalent to a diff from 1dfa5234d3 to 00ac73a01c
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2016-04-09
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| 14:36 | Limit the number of digits shown in the "prereq" mask for ".wheretrace" debugging output. (check-in: 3686ed7413 user: drh tags: trunk) | |
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2016-04-08
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| 21:35 | Attempt to treat the arguments to a table-valued function as if they occur in the ON clause of a LEFT JOIN rather than in the WHERE clause. But this causes undesirable behavior with generate_series, as demonstrated by test cases. This is an incremental check-in pending further work. (Leaf check-in: 00ac73a01c user: drh tags: tabfunc-in-left-join) | |
| 19:44 | Update documentation for sqlite3_snapshot_open(). No code changes. (check-in: 1dfa5234d3 user: drh tags: trunk) | |
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2016-04-07
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| 21:14 | Add test cases for ticket [7f7f8026eda387d544]. (check-in: 87aa9357fb user: drh tags: trunk) | |
Changes to src/whereexpr.c.
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pColRef = sqlite3PExpr(pParse, TK_COLUMN, 0, 0, 0);
if( pColRef==0 ) return;
pColRef->iTable = pItem->iCursor;
pColRef->iColumn = k++;
pColRef->pTab = pTab;
pTerm = sqlite3PExpr(pParse, TK_EQ, pColRef,
sqlite3ExprDup(pParse->db, pArgs->a[j].pExpr, 0), 0);
if( pTerm && (pItem->fg.jointype & JT_OUTER)!=0 ){
ExprSetProperty(pTerm, EP_FromJoin);
}
whereClauseInsert(pWC, pTerm, TERM_DYNAMIC);
}
}
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Changes to test/tabfunc01.test.
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do_catchsql_test tabfunc01-1.21.2 {
SELECT * FROM v1();
} {1 {'v1' is not a function}}
do_execsql_test tabfunc01-1.22 {
CREATE VIEW v2(x) AS SELECT value FROM generate_series(1,5);
SELECT * FROM v2;
} {1 2 3 4 5}
do_execsql_test tabfunc01-1.22.2 {
SELECT * FROM generate_series(1,5) AS A
LEFT JOIN generate_series(4,8) AS B ON A.value=B.value;
} {1 {} 2 {} 3 {} 4 4 5 5}
do_execsql_test tabfunc01-1.22.3 {
CREATE TEMP TABLE t22 AS SELECT value AS x FROM generate_series(1,5);
SELECT * FROM t22 AS A LEFT JOIN generate_series(4,8) AS B ON A.x=B.value;
} {1 {} 2 {} 3 {} 4 4 5 5}
do_execsql_test tabfunc01-1.22.4 {
WITH x1(x) AS (SELECT value FROM generate_series(1,5))
SELECT * FROM x1 AS A LEFT JOIN generate_series(4,8) AS B ON A.x=B.value;
} {1 {} 2 {} 3 {} 4 4 5 5}
do_execsql_test tabfunc01-1.22.5 {
SELECT * FROM (SELECT value AS x FROM generate_series(1,5)) AS A
LEFT JOIN generate_series(4,8) AS B ON A.x=B.value;
} {1 {} 2 {} 3 {} 4 4 5 5}
do_execsql_test tabfunc01-1.22.6 {
SELECT * FROM v2 LEFT JOIN generate_series(4,8) ON value=x;
} {1 {} 2 {} 3 {} 4 4 5 5}
do_execsql_test tabfunc01-1.22.7 {
SELECT * FROM generate_series(1,21,10) AS a LEFT JOIN v2 ON a.value=v2.x;
} {1 1 11 {} 21 {}}
do_catchsql_test tabfunc01-1.23.1 {
SELECT * FROM v2(55);
} {1 {'v2' is not a function}}
do_catchsql_test tabfunc01-1.23.2 {
SELECT * FROM v2();
} {1 {'v2' is not a function}}
do_execsql_test tabfunc01-1.24 {
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# each step of output. At one point, the IN operator could not be used
# by virtual tables unless omit was set.
#
do_execsql_test tabfunc01-500 {
SELECT * FROM generate_series WHERE start IN (1,7) AND stop=20 AND step=10
ORDER BY +1;
} {1 7 11 17}
# When a table-valued function appears as the right table in a LEFT JOIN,
# the function arguments are understood as if they appear in the ON clause,
# not in the WHERE clause.
#
do_execsql_test tabfunc01-600 {
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(x);
INSERT INTO t1 VALUES(4),(11),(17);
SELECT * FROM t1 LEFT JOIN generate_series(9,13) ON x=value ORDER BY +x;
} {4 {} 11 11 17 {}}
do_execsql_test tabfunc01-601 {
SELECT * FROM t1 LEFT JOIN generate_series ON x=value
WHERE start=9 AND stop=13
ORDER BY +x;
} {11 11}
do_execsql_test tabfunc01-602 {
SELECT * FROM t1 LEFT JOIN generate_series ON x=value AND start=9 AND stop=13
ORDER BY +x;
} {4 {} 11 11 17 {}}
finish_test
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