hcq/MaxScale
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MXS-3585 Fix problem

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Johan Wikman 2021-06-02 13:50:41 +03:00 committed by Markus Mäkelä
parent 1185098e41
commit fa83259c62
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GPG Key ID: 5CE746D557ACC499
2 changed files with 25 additions and 11 deletions
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30
query_classifier/qc_sqlite/qc_sqlite.cc
View File

@ -712,8 +712,6 @@ public:
void update_names(const char* zDatabase, const char* zTable, const char* zAlias, QcAliases* pAliases)
{
mxb_assert(zTable);
bool should_collect_alias = pAliases && zAlias && should_collect(QC_COLLECT_FIELDS);
bool should_collect_table = should_collect_alias || should_collect(QC_COLLECT_TABLES);
bool should_collect_database = zDatabase
@ -736,7 +734,7 @@ public:
exposed_sqlite3Dequote(database);
}
if (should_collect_table)
if (should_collect_table && zTable)
{
if (strcasecmp(zTable, "DUAL") != 0)
{
@ -1437,9 +1435,14 @@ public:
update_names(pSrc->a[i].zDatabase, pSrc->a[i].zName, pSrc->a[i].zAlias, pAliases);
}
if (pSrc->a[i].pSelect && pSrc->a[i].pSelect->pSrc)
if (pSrc->a[i].pSelect)
{
update_names_from_srclist(pAliases, pSrc->a[i].pSelect->pSrc);
maxscaleCollectInfoFromSelect(nullptr, pSrc->a[i].pSelect, 1); // 1 denotes subselect.
if (pSrc->a[i].pSelect->pSrc) // The FROM clause
{
update_names_from_srclist(pAliases, pSrc->a[i].pSelect->pSrc);
}
}
if (pSrc->a[i].pOn)
@ -1818,6 +1821,11 @@ public:
{
const SrcList::SrcList_item* pItem = &pUsing->a[i];
if (pItem->pSelect)
{
maxscaleCollectInfoFromSelect(nullptr, pItem->pSelect, 1); // 1 denotes subselect.
}
update_names(pItem->zDatabase, pItem->zName, pItem->zAlias, &aliases);
}
@ -1834,7 +1842,7 @@ public:
{
SrcList::SrcList_item* pItem = &pUsing->a[j++];
if (strcasecmp(pTable->zName, pItem->zName) == 0)
if (pItem->zName && (strcasecmp(pTable->zName, pItem->zName) == 0))
{
isSame = true;
}
@ -2082,7 +2090,15 @@ public:
m_type_mask = QUERY_TYPE_WRITE;
m_operation = QUERY_OP_UPDATE;
update_names_from_srclist(&aliases, pTabList);
m_has_clause = ((pWhere && pWhere->op != TK_IN) ? true : false);
// If this is an UPDATE ... SELECT ... and the select has a where clause
// or a limit, then m_has_clause has been set already.
if (!m_has_clause)
{
if (pWhere && pWhere->op != TK_IN)
{
m_has_clause = true;
}
}
if (pChanges)
{

6
query_classifier/qc_sqlite/sqlite-src-3110100/src/parse.y
View File

@ -1592,10 +1592,8 @@ table_factor(A) ::= nm(X) DOT nm(Y) as_opt id(Z). {
A = sqlite3SrcListAppendFromTerm(pParse, 0, &X, &Y, &Z, 0, 0, 0);
}
table_factor(A) ::= LP oneselect(S) RP as_opt id. {
maxscaleCollectInfoFromSelect(pParse, S, 1);
sqlite3SelectDelete(pParse->db, S);
A = 0;
table_factor(A) ::= LP oneselect(S) RP as_opt id(Z). {
A = sqlite3SrcListAppendFromTerm(pParse, 0, 0, 0, &Z, S, 0, 0);
}
%type table_reference {SrcList*}