Reduce the size of the SrcItem object by combining fields into a union.

FossilOrigin-Name: a4c59ac3c6ec979c25b544d29e47b8e39f6439c098eed8f84b3bd506c9adf047

1 files changed, 5 insertions, 2 deletions

diff --git a/src/expr.c b/src/expr.c
index 53b0170ab..d0fa4b500 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -1877,8 +1877,11 @@ SrcList *sqlite3SrcListDup(sqlite3 *db, const SrcList *p, int flags){
     SrcItem *pNewItem = &pNew->a[i];
     const SrcItem *pOldItem = &p->a[i];
     Table *pTab;
-    pNewItem->pSchema = pOldItem->pSchema;
-    pNewItem->zDatabase = sqlite3DbStrDup(db, pOldItem->zDatabase);
+    if( pOldItem->fg.fixedSchema ){
+      pNewItem->u4.pSchema = pOldItem->u4.pSchema;
+    }else{
+      pNewItem->u4.zDatabase = sqlite3DbStrDup(db, pOldItem->u4.zDatabase);
+    }
     pNewItem->zName = sqlite3DbStrDup(db, pOldItem->zName);
     pNewItem->zAlias = sqlite3DbStrDup(db, pOldItem->zAlias);
     pNewItem->fg = pOldItem->fg;