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Merge latest changes from trunk. This branch still does not work.

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FossilOrigin-Name: 6144387238c03b8b33ae98d624f7ffa44a7829d3e0d4a0a01b5528e71ab4f08b
This commit is contained in:
drh
2020-07-14 01:03:05 +00:00
parent 413b94af89 5b107654e9
commit 9d575e46f3
14 changed files with 342 additions and 44 deletions
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15
src/select.c
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@@ -175,21 +175,6 @@ void sqlite3SelectDelete(sqlite3 *db, Select *p){
if( OK_IF_ALWAYS_TRUE(p) ) clearSelect(db, p, 1);
}
/*
** Delete all the substructure for p, but keep p allocated. Redefine
** p to be a single SELECT where every column of the result set has a
** value of NULL.
*/
void sqlite3SelectReset(Parse *pParse, Select *p){
if( ALWAYS(p) ){
clearSelect(pParse->db, p, 0);
memset(&p->iLimit, 0, sizeof(Select) - offsetof(Select,iLimit));
p->pEList = sqlite3ExprListAppend(pParse, 0,
sqlite3ExprAlloc(pParse->db,TK_NULL,0,0));
p->pSrc = sqlite3DbMallocZero(pParse->db, sizeof(SrcList));
}
}
/*
** Return a pointer to the right-most SELECT statement in a compound.
*/