JOIN filter push down filled join fix

src/Processors/QueryPlan/Optimizations/filterPushDown.cpp

@@ -253,7 +253,7 @@ static size_t tryPushDownOverJoinStep(QueryPlan::Node * parent_node, QueryPlan::
 
     bool has_single_clause = table_join.getClauses().size() == 1;
 
-    if (has_single_clause)
+    if (has_single_clause && !filled_join)
     {
         const auto & join_clause = table_join.getClauses()[0];
         size_t key_names_size = join_clause.key_names_left.size();

tests/queries/0_stateless/03143_join_filter_push_down_filled_join_fix.reference

@@ -0,0 +1 @@
+1	1	1	test

tests/queries/0_stateless/03143_join_filter_push_down_filled_join_fix.sql

@@ -0,0 +1,45 @@
+DROP TABLE IF EXISTS t1;
+CREATE TABLE t1
+(
+    id UInt64,
+    external_id UInt64
+)
+ENGINE = MergeTree
+ORDER BY id;
+
+DROP TABLE IF EXISTS t2;
+CREATE TABLE t2
+(
+    id UInt64,
+    name String
+)
+ENGINE = MergeTree
+ORDER BY id;
+
+INSERT INTO t1 VALUES (1, 1);
+
+INSERT INTO t2 VALUES (1, 'test');
+
+DROP DICTIONARY IF EXISTS d2;
+CREATE DICTIONARY d2
+(
+    id UInt64,
+    name String,
+)
+PRIMARY KEY id
+SOURCE(CLICKHOUSE(
+    table t2))
+LIFETIME(MIN 600 MAX 900)
+LAYOUT(HASHED());
+
+SELECT
+    *
+FROM
+    t1
+    LEFT JOIN d2 ON d2.id = t1.external_id
+    WHERE t1.id = 1
+LIMIT 1;
+
+DROP DICTIONARY d2;
+DROP TABLE t2;
+DROP TABLE t1;