database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-12 13:01:09 +03:00
Code Activity

Improvements to the algorithm that determines which SELECT in a sequence

Browse Source 
of nested SELECT statements that an aggregate function belongs to.  This
resolves an issue identified by dbsqlfuzz.

FossilOrigin-Name: d768007473f4ed40abbdf2c7e501b580b1cc37c1620c7cb90af1f208a8c35145
This commit is contained in:
drh
2019-08-31 20:13:30 +00:00
parent f66bfcb740
commit 80f6bfc064
4 changed files with 44 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
manifest
View File

@@ -1,5 +1,5 @@
C If\sa\sDELETE\strigger\sfired\sby\san\sUPDATE\sOR\sREPLACE\sstatement\sdeletes\sthe\srow\sbeing\supdated,\sdo\snot\sattempt\sto\sproceed\swith\sthe\soriginal\sUPDATE\soperation.\sFix\sfor\s[d6a0fbc1].
D 2019-08-31T17:14:35.569
C Improvements\sto\sthe\salgorithm\sthat\sdetermines\swhich\sSELECT\sin\sa\ssequence\nof\snested\sSELECT\sstatements\sthat\san\saggregate\sfunction\sbelongs\sto.\s\sThis\nresolves\san\sissue\sidentified\sby\sdbsqlfuzz.
D 2019-08-31T20:13:30.510
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -475,7 +475,7 @@ F src/date.c e1d8ac7102f3f283e63e13867acb0efa33861cf34f0faf4cdbaf9fa7a1eb7041
F src/dbpage.c 135eb3b5e74f9ef74bde5cec2571192c90c86984fa534c88bf4a055076fa19b7
F src/dbstat.c c12833de69cb655751487d2c5a59607e36be1c58ba1f4bd536609909ad47b319
F src/delete.c d08c9e01a2664afd12edcfa3a9c6578517e8ff8735f35509582693adbe0edeaf
F src/expr.c 60cf8c778c3291220487bea46667339160f15bbddaef57c1a703c56d5fc76c52
F src/expr.c eb9b2e8b19d28ff58d20585964052166c0d38620593a8ab5c66214415f850261
F src/fault.c 460f3e55994363812d9d60844b2a6de88826e007
F src/fkey.c 6b79f4c2447691aa9ac86e2a6a774b65f3b3dd053d4220a4893051a0de20f82e
F src/func.c 4ee36219698d50d672a28eca4adb0fd6b92e607a1883d318315e0d2fd5044467
@@ -618,7 +618,7 @@ F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
F test/affinity2.test da465d3d490ab24ef64f7715b5953343a4967762b9350b29eb1462879ff3fb9e
F test/affinity3.test 6a101af2fc945ce2912f6fe54dd646018551710d
F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
F test/aggnested.test 18b00de006597e960a6b27ccec51474ac66cf1070a87c1933e5694dc02190ef1
F test/aggnested.test 12106f0748e8e9bfc1a8e6840e203e051eae06a26ed13fc9fd5db108a8d6db54
F test/alias.test 4529fbc152f190268a15f9384a5651bbbabc9d87
F test/all.test 2ecb8bbd52416642e41c9081182a8df05d42c75637afd4488aace78cc4b69e13
F test/alter.test 16ed8d2470193f34bc711e51506ff1211ebfab8025ca3b9510ff2aef139874cb
@@ -1838,8 +1838,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P e2db1123faac26c0e0b6a1ebef1685ea7633bfcafd1ff743ba5380700f7745af
R 1a919c61b513d8917573ee41d8ce4c15
T +closed 2a0152c9f5f2ca56734189521b3b114ad6ba7ee7941d0f22d262081125436f72
U dan
Z 6965309018f410a0aa2e8d19660bb27e
P 4145b3e05051ba6729105157a876793ad14a05d895fc10fe704f437eab16ea93
R 30aae3120e96fb727d9d30a86d181e41
U drh
Z e2cf69056f38cf2141131156d9461b54

2
manifest.uuid
View File

@@ -1 +1 @@
4145b3e05051ba6729105157a876793ad14a05d895fc10fe704f437eab16ea93
d768007473f4ed40abbdf2c7e501b580b1cc37c1620c7cb90af1f208a8c35145

8
src/expr.c
View File

@@ -5297,7 +5297,10 @@ static int exprSrcCount(Walker *pWalker, Expr *pExpr){
}
if( i<nSrc ){
p->nThis++;
}else{
}else if( nSrc==0 || pExpr->iTable<pSrc->a[0].iCursor ){
/* In a well-formed parse tree (no name resolution errors),
/* TK_COLUMN nodes with smaller Expr.iTable values are in an
** outer context. Those are the only ones to count as "other" */
p->nOther++;
}
}
@@ -5314,8 +5317,9 @@ int sqlite3FunctionUsesThisSrc(Expr *pExpr, SrcList *pSrcList){
Walker w;
struct SrcCount cnt;
assert( pExpr->op==TK_AGG_FUNCTION );
memset(&w, 0, sizeof(w));
w.xExprCallback = exprSrcCount;
w.xSelectCallback = 0;
w.xSelectCallback = sqlite3SelectWalkNoop;
w.u.pSrcCount = &cnt;
cnt.pSrc = pSrcList;
cnt.nThis = 0;

30
test/aggnested.test
View File

@@ -1,4 +1,4 @@
# 2012 August 23
# 2012-08-23
#
# The author disclaims copyright to this source code. In place of
# a legal notice, here is a blessing:
@@ -232,6 +232,34 @@ do_test aggnested-3.16 {
GROUP BY id1;
}
} {12 2 34 4}
# 2019-08-31
# Problem found by dbsqlfuzz
#
do_execsql_test aggnested-4.1 {
DROP TABLE IF EXISTS aa;
DROP TABLE IF EXISTS bb;
CREATE TABLE aa(x INT); INSERT INTO aa(x) VALUES(123);
CREATE TABLE bb(y INT); INSERT INTO bb(y) VALUES(456);
SELECT (SELECT sum(x+(SELECT y)) FROM bb) FROM aa;
} {579}
do_execsql_test aggnested-4.2 {
SELECT (SELECT sum(x+y) FROM bb) FROM aa;
} {579}
do_execsql_test aggnested-4.3 {
DROP TABLE IF EXISTS tx;
DROP TABLE IF EXISTS ty;
CREATE TABLE tx(x INT);
INSERT INTO tx VALUES(1),(2),(3),(4),(5);
CREATE TABLE ty(y INT);
INSERT INTO ty VALUES(91),(92),(93);
SELECT min((SELECT count(y) FROM ty)) FROM tx;
} {3}
do_execsql_test aggnested-4.4 {
SELECT max((SELECT a FROM (SELECT count(*) AS a FROM ty) AS s)) FROM tx;
} {3}
finish_test