Fix: ENR temp table creation fails for long table names

Author: anju15bharti

src/backend/commands/tablecmds.c

@@ -797,13 +797,26 @@ DefineRelation(CreateStmt *stmt, char relkind, Oid ownerId,
 	LOCKMODE	parentLockmode;
 	Oid			accessMethodId = InvalidOid;
 	ObjectAddress tsql_tabletype_address;
+	const char *effective_relname;
 
 	/*
 	 * Truncate relname to appropriate length (probably a waste of time, as
 	 * parser should have done this already).
 	 */
 	strlcpy(relname, stmt->relation->relname, NAMEDATALEN);
 
+	/*
+	 * For T-SQL #temp tables, ENR stores names in heap-allocated memory
+	 * without NAMEDATALEN limit.  Use the full original name so that
+	 * subsequent lookups via the scanner match the registered ENR entry.
+	 */
+	if (sql_dialect == SQL_DIALECT_TSQL &&
+		stmt->relation->relpersistence == RELPERSISTENCE_TEMP &&
+		stmt->relation->relname[0] == '#')
+		effective_relname = stmt->relation->relname;
+	else
+		effective_relname = relname;
+
 	/*
 	 * Check consistency of arguments
 	 */
@@ -1078,7 +1091,7 @@ DefineRelation(CreateStmt *stmt, char relkind, Oid ownerId,
 	 * passed in for immediate handling --- since they don't need parsing,
 	 * they can be stored immediately.
 	 */
-	relationId = heap_create_with_catalog(relname,
+	relationId = heap_create_with_catalog(effective_relname,
 										  namespaceId,
 										  tablespaceId,
 										  InvalidOid,