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-rw-r--r--src/sqliteInt.h2
-rw-r--r--src/where.c14
2 files changed, 15 insertions, 1 deletions
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 35c4d403e..bb61cb691 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -2114,7 +2114,7 @@ struct FuncDestructor {
#define MFUNCTION(zName, nArg, xPtr, xFunc) \
{nArg, SQLITE_FUNC_BUILTIN|SQLITE_FUNC_CONSTANT|SQLITE_UTF8, \
xPtr, 0, xFunc, 0, 0, 0, #zName, {0} }
-#define JFUNCTION(zName, nArg, bUseCache, bRS, bWS, iArg, xFunc) \
+#define JFUNCTION(zName, nArg, bUseCache, bWS, bRS, iArg, xFunc) \
{nArg, SQLITE_FUNC_BUILTIN|SQLITE_DETERMINISTIC|SQLITE_FUNC_CONSTANT|\
SQLITE_UTF8|((bUseCache)*SQLITE_FUNC_RUNONLY)|\
((bRS)*SQLITE_SUBTYPE)|((bWS)*SQLITE_RESULT_SUBTYPE), \
diff --git a/src/where.c b/src/where.c
index 05ae24f7b..448fe27c1 100644
--- a/src/where.c
+++ b/src/where.c
@@ -5810,6 +5810,20 @@ static SQLITE_NOINLINE void whereAddIndexedExpr(
continue;
}
if( sqlite3ExprIsConstant(pExpr) ) continue;
+ if( pExpr->op==TK_FUNCTION ){
+ /* Functions that might set a subtype should not be replaced by the
+ ** value taken from an expression index since the index omits the
+ ** subtype. https://sqlite.org/forum/forumpost/68d284c86b082c3e */
+ int n;
+ FuncDef *pDef;
+ sqlite3 *db = pParse->db;
+ assert( ExprUseXList(pExpr) );
+ n = pExpr->x.pList ? pExpr->x.pList->nExpr : 0;
+ pDef = sqlite3FindFunction(db, pExpr->u.zToken, n, ENC(db), 0);
+ if( NEVER(pDef==0) || (pDef->funcFlags & SQLITE_RESULT_SUBTYPE)!=0 ){
+ continue;
+ }
+ }
p = sqlite3DbMallocRaw(pParse->db, sizeof(IndexedExpr));
if( p==0 ) break;
p->pIENext = pParse->pIdxEpr;