Fix a faulty assert() in the "AS" alias resolution logic of the parser.
FossilOrigin-Name: b5e43602833249aa4b73337bf85b7f308450dab6
diff --git a/src/resolve.c b/src/resolve.c
index 32e0a98..b75db42 100644
--- a/src/resolve.c
+++ b/src/resolve.c
@@ -79,7 +79,7 @@
** SELECT a+b, c+d FROM t1 ORDER BY (a+b) COLLATE nocase;
**
** The nSubquery parameter specifies how many levels of subquery the
-** alias is removed from the original expression. The usually value is
+** alias is removed from the original expression. The usual 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.
@@ -99,7 +99,7 @@
assert( iCol>=0 && iCol<pEList->nExpr );
pOrig = pEList->a[iCol].pExpr;
assert( pOrig!=0 );
- assert( pOrig->flags & EP_Resolved );
+ assert( (pOrig->flags & EP_Resolved)!=0 || zType[0]==0 );
db = pParse->db;
pDup = sqlite3ExprDup(db, pOrig, 0);
if( pDup==0 ) return;