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Add test cases and fix bugs associated with the previous check-in

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enhancements to nested aggregate subquery processing.

FossilOrigin-Name: 00b1dc71be4c3420730b5f7840af824ea86165e7
This commit is contained in:
drh 2012-08-23 19:46:11 +00:00
parent 030796df8d
commit ed551b95a4
6 changed files with 98 additions and 46 deletions
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21
manifest
View File

@ -1,5 +1,5 @@
C Further\simprovements\sto\sthe\sprocessing\sof\snested\saggregate\squeries.
D 2012-08-23T16:18:10.544
C Add\stest\scases\sand\sfix\sbugs\sassociated\swith\sthe\sprevious\scheck-in\nenhancements\sto\snested\saggregate\ssubquery\sprocessing.
D 2012-08-23T19:46:11.832
F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
F Makefile.in abd5c10d21d1395f140d9e50ea999df8fa4d6376
F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@ -132,7 +132,7 @@ F src/complete.c dc1d136c0feee03c2f7550bafc0d29075e36deac
F src/ctime.c 500d019da966631ad957c37705642be87524463b
F src/date.c 067a81c9942c497aafd2c260e13add8a7d0c7dd4
F src/delete.c 4c20ea4f6213b3bc1c6a510586864b679946e05e
F src/expr.c e03a5509b5c8f0d0b5e8210ea43addabc4a17f47
F src/expr.c 94bac8cc555d97fe4518529ad53d9ba926df9d62
F src/fault.c 160a0c015b6c2629d3899ed2daf63d75754a32bb
F src/fkey.c 657212460bf5cfd3ae607d12ea62092844c227b5
F src/func.c 18dfedfb857e100b05755a1b12e88b389f957879
@ -174,7 +174,7 @@ F src/pragma.c 97f9357f0e7e5fb46a2519f14539550aa07db49f
F src/prepare.c 33291b83cca285718048d219c67b8298501fa3a5
F src/printf.c 4a9f882f1c1787a8b494a2987765acf9d97ac21f
F src/random.c cd4a67b3953b88019f8cd4ccd81394a8ddfaba50
F src/resolve.c e60d1f7ce1f1d1ae13acf1c39b4e8bfd9e243847
F src/resolve.c 9e28280ec98035f31900fdd1db01f86f68ca6c32
F src/rowset.c f6a49f3e9579428024662f6e2931832511f831a1
F src/select.c cd051b460e7d0c3ac42e7727eef075fb29c23769
F src/shell.c 076e1c90d594644f36027c8ecff9a392cf2d3a06
@ -249,11 +249,11 @@ F src/vdbetrace.c 8bd5da325fc90f28464335e4cc4ad1407fe30835
F src/vtab.c bb8ea3a26608bb1357538a5d2fc72beba6638998
F src/wal.c 9294df6f96aae5909ae1a9b733fd1e1b4736978b
F src/wal.h 29c197540b19044e6cd73487017e5e47a1d3dac6
F src/walker.c 3112bb3afe1d85dc52317cb1d752055e9a781f8f
F src/walker.c 3d75ba73de15e0f8cd0737643badbeb0e002f07b
F src/where.c 24c7494d8875ead994b4dfe5461340c27fd424ca
F test/8_3_names.test 631ea964a3edb091cf73c3b540f6bcfdb36ce823
F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
F test/aggnested.test 6c1efa2ed9f5dd0f80035b4fe794c6a278cd1ead
F test/aggnested.test 0be144b453e0622a085fae8665c32f5676708e00
F test/alias.test 4529fbc152f190268a15f9384a5651bbbabc9d87
F test/all.test 52fc8dee494092031a556911d404ca30a749a30b
F test/alter.test 57d96ec9b320bd07af77567034488dcb6642c748
@ -1012,10 +1012,7 @@ F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
F tool/win/sqlite.vsix 67d8a99aceb56384a81b3f30d6c71743146d2cc9
P b1dbf490869d7fc55ce797cf80cf3bf7141d2d15
R 6f0858104ecac7c70bd80af9dbc9e718
T *branch * nested-agg
T *sym-nested-agg *
T -sym-trunk *
P 3c3ffa901f5ce8a523028ff15563ce3e0f55a641
R 7ac9abcbd2554a39d90c74812c59041d
U drh
Z fbb7622480ad2005f08fba3df589ccf6
Z 5534967a0ee04b7aa372747f5ce8ed30

2
manifest.uuid
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@ -1 +1 @@
3c3ffa901f5ce8a523028ff15563ce3e0f55a641
00b1dc71be4c3420730b5f7840af824ea86165e7

35
src/expr.c
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@ -3123,9 +3123,12 @@ void sqlite3ExplainExpr(Vdbe *pOut, Expr *pExpr){
}else{
pFarg = pExpr->x.pList;
}
sqlite3ExplainPrintf(pOut, "%sFUNCTION:%s(",
op==TK_AGG_FUNCTION ? "AGG_" : "",
pExpr->u.zToken);
if( op==TK_AGG_FUNCTION ){
sqlite3ExplainPrintf(pOut, "AGG_FUNCTION%d:%s(",
pExpr->op2, pExpr->u.zToken);
}else{
sqlite3ExplainPrintf(pOut, "FUNCTION:%s(", pExpr->u.zToken);
}
if( pFarg ){
sqlite3ExplainExprList(pOut, pFarg);
}
@ -3818,8 +3821,8 @@ int sqlite3ExprListCompare(ExprList *pA, ExprList *pB){
/*
** An instance of the following structure is used by the tree walker
** to count references to table columns in the arguments of an
** aggregate function, in order to implement the sqlite3FunctionUsesOtherSrc()
** and sqlite3FunctionThisSrc() routines.
** aggregate function, in order to implement the
** sqlite3FunctionThisSrc() routine.
*/
struct SrcCount {
SrcList *pSrc; /* One particular FROM clause in a nested query */
@ -3847,26 +3850,6 @@ static int exprSrcCount(Walker *pWalker, Expr *pExpr){
return WRC_Continue;
}
/*
** Determine if any of the arguments to the pExpr Function references
** any SrcList other than pSrcList. Return true if they do. Return
** false if pExpr has no argument or has only constant arguments or
** only references tables named in pSrcList.
*/
static int sqlite3FunctionUsesOtherSrc(Expr *pExpr, SrcList *pSrcList){
Walker w;
struct SrcCount cnt;
assert( pExpr->op==TK_AGG_FUNCTION );
memset(&w, 0, sizeof(w));
w.xExprCallback = exprSrcCount;
w.u.pSrcCount = &cnt;
cnt.pSrc = pSrcList;
cnt.nThis = 0;
cnt.nOther = 0;
sqlite3WalkExprList(&w, pExpr->x.pList);
return cnt.nOther>0;
}
/*
** Determine if any of the arguments to the pExpr Function reference
** pSrcList. Return true if they do. Also return true if the function
@ -4003,7 +3986,7 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){
}
case TK_AGG_FUNCTION: {
if( (pNC->ncFlags & NC_InAggFunc)==0
&& !sqlite3FunctionUsesOtherSrc(pExpr, pSrcList)
&& pWalker->walkerDepth==pExpr->op2
){
/* Check to see if pExpr is a duplicate of another aggregate
** function that is already in the pAggInfo structure

41
src/resolve.c
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@ -18,6 +18,29 @@
#include <stdlib.h>
#include <string.h>
/*
** Walk the expression tree pExpr and increase the aggregate function
** depth (the Expr.op2 field) by N on every TK_AGG_FUNCTION node.
** This needs to occur when copying a TK_AGG_FUNCTION node from an
** outer query into an inner subquery.
**
** incrAggFunctionDepth(pExpr,n) is the main routine. incrAggDepth(..)
** is a helper function - a callback for the tree walker.
*/
static int incrAggDepth(Walker *pWalker, Expr *pExpr){
if( pExpr->op==TK_AGG_FUNCTION ) pExpr->op2 += pWalker->u.i;
return WRC_Continue;
}
static void incrAggFunctionDepth(Expr *pExpr, int N){
if( N>0 ){
Walker w;
memset(&w, 0, sizeof(w));
w.xExprCallback = incrAggDepth;
w.u.i = N;
sqlite3WalkExpr(&w, pExpr);
}
}
/*
** Turn the pExpr expression into an alias for the iCol-th column of the
** result set in pEList.
@ -44,13 +67,20 @@
** The result of random()%5 in the GROUP BY clause is probably different
** from the result in the result-set. We might fix this someday. Or
** then again, we might not...
**
** The nSubquery parameter specifies how many levels of subquery the
** alias is removed from the original expression. The usually value is
** zero but it might be more if the alias is contained within a subquery
** of the original expression. The Expr.op2 field of TK_AGG_FUNCTION
** structures must be increased by the nSubquery amount.
*/
static void resolveAlias(
Parse *pParse, /* Parsing context */
ExprList *pEList, /* A result set */
int iCol, /* A column in the result set. 0..pEList->nExpr-1 */
Expr *pExpr, /* Transform this into an alias to the result set */
const char *zType /* "GROUP" or "ORDER" or "" */
const char *zType, /* "GROUP" or "ORDER" or "" */
int nSubquery /* Number of subqueries that the label is moving */
){
Expr *pOrig; /* The iCol-th column of the result set */
Expr *pDup; /* Copy of pOrig */
@ -63,6 +93,7 @@ static void resolveAlias(
db = pParse->db;
if( pOrig->op!=TK_COLUMN && zType[0]!='G' ){
pDup = sqlite3ExprDup(db, pOrig, 0);
incrAggFunctionDepth(pDup, nSubquery);
pDup = sqlite3PExpr(pParse, TK_AS, pDup, 0, 0);
if( pDup==0 ) return;
if( pEList->a[iCol].iAlias==0 ){
@ -151,9 +182,10 @@ static int lookupName(
NameContext *pNC, /* The name context used to resolve the name */
Expr *pExpr /* Make this EXPR node point to the selected column */
){
int i, j; /* Loop counters */
int i, j; /* Loop counters */
int cnt = 0; /* Number of matching column names */
int cntTab = 0; /* Number of matching table names */
int nSubquery = 0; /* How many levels of subquery */
sqlite3 *db = pParse->db; /* The database connection */
struct SrcList_item *pItem; /* Use for looping over pSrcList items */
struct SrcList_item *pMatch = 0; /* The matching pSrcList item */
@ -315,7 +347,7 @@ static int lookupName(
sqlite3ErrorMsg(pParse, "misuse of aliased aggregate %s", zAs);
return WRC_Abort;
}
resolveAlias(pParse, pEList, j, pExpr, "");
resolveAlias(pParse, pEList, j, pExpr, "", nSubquery);
cnt = 1;
pMatch = 0;
assert( zTab==0 && zDb==0 );
@ -329,6 +361,7 @@ static int lookupName(
*/
if( cnt==0 ){
pNC = pNC->pNext;
nSubquery++;
}
}
@ -859,7 +892,7 @@ int sqlite3ResolveOrderGroupBy(
resolveOutOfRangeError(pParse, zType, i+1, pEList->nExpr);
return 1;
}
resolveAlias(pParse, pEList, pItem->iOrderByCol-1, pItem->pExpr, zType);
resolveAlias(pParse, pEList, pItem->iOrderByCol-1, pItem->pExpr, zType,0);
}
}
return 0;

12
src/walker.c
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@ -125,12 +125,18 @@ int sqlite3WalkSelect(Walker *pWalker, Select *p){
int rc;
if( p==0 || pWalker->xSelectCallback==0 ) return WRC_Continue;
rc = WRC_Continue;
while( p ){
pWalker->walkerDepth++;
while( p ){
rc = pWalker->xSelectCallback(pWalker, p);
if( rc ) break;
if( sqlite3WalkSelectExpr(pWalker, p) ) return WRC_Abort;
if( sqlite3WalkSelectFrom(pWalker, p) ) return WRC_Abort;
if( sqlite3WalkSelectExpr(pWalker, p)
|| sqlite3WalkSelectFrom(pWalker, p)
){
pWalker->walkerDepth--;
return WRC_Abort;
}
p = p->pPrior;
}
pWalker->walkerDepth--;
return rc & WRC_Abort;
}

33
test/aggnested.test
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@ -34,5 +34,38 @@ do_test aggnested-1.2 {
FROM t1;
}
} {1x2x3-4y5}
do_test aggnested-1.3 {
db eval {
SELECT (SELECT group_concat(b1,a1) FROM t2) FROM t1;
}
} {415 425 435}
do_test aggnested-1.4 {
db eval {
SELECT (SELECT group_concat(a1,b1) FROM t2) FROM t1;
}
} {151 252 353}
# This test case is a copy of the one in
# http://www.mail-archive.com/sqlite-users@sqlite.org/msg70787.html
#
do_test aggnested-2.0 {
sqlite3 db2 :memory:
db2 eval {
CREATE TABLE t1 (A1 INTEGER NOT NULL,A2 INTEGER NOT NULL,A3 INTEGER NOT
NULL,A4 INTEGER NOT NULL,PRIMARY KEY(A1));
REPLACE INTO t1 VALUES(1,11,111,1111);
REPLACE INTO t1 VALUES(2,22,222,2222);
REPLACE INTO t1 VALUES(3,33,333,3333);
CREATE TABLE t2 (B1 INTEGER NOT NULL,B2 INTEGER NOT NULL,B3 INTEGER NOT
NULL,B4 INTEGER NOT NULL,PRIMARY KEY(B1));
REPLACE INTO t2 VALUES(1,88,888,8888);
REPLACE INTO t2 VALUES(2,99,999,9999);
SELECT (SELECT GROUP_CONCAT(CASE WHEN a1=1 THEN'A' ELSE 'B' END) FROM t2),
t1.*
FROM t1;
}
} {A,B,B 3 33 333 3333}
db2 close
finish_test