add test case for multiple relations and lateral

sql/core/src/test/resources/sql-tests/analyzer-results/pipe-operators.sql.out

@@ -288,6 +288,40 @@ Project [pipeselect(1) AS x#x]
    +- Relation spark_catalog.default.t[x#x,y#x] csv
 
 
+-- !query
+from t, other
+|> select t.x + other.a as z
+-- !query analysis 
+Project [pipeselect((x#x + a#x)) AS z#x]
++- Join Inner
+   :- SubqueryAlias spark_catalog.default.t
+   :  +- Relation spark_catalog.default.t[x#x,y#x] csv
+   +- SubqueryAlias spark_catalog.default.other
+      +- Relation spark_catalog.default.other[a#x,b#x] json
+
+
+-- !query
+from t join other on (t.x = other.a)
+|> select t.x + other.a as z
+-- !query analysis
+Project [pipeselect((x#x + a#x)) AS z#x]
++- Join Inner, (x#x = a#x)
+   :- SubqueryAlias spark_catalog.default.t
+   :  +- Relation spark_catalog.default.t[x#x,y#x] csv
+   +- SubqueryAlias spark_catalog.default.other
+      +- Relation spark_catalog.default.other[a#x,b#x] json
+
+
+-- !query
+from t lateral view explode(array(100, 101)) as ly
+|> select t.x + ly as z
+-- !query analysis
+Project [pipeselect((x#x + ly#x)) AS z#x]
++- Generate explode(array(100, 101)), false, as, [ly#x]
+   +- SubqueryAlias spark_catalog.default.t
+      +- Relation spark_catalog.default.t[x#x,y#x] csv
+
+
 -- !query
 table t
 |> select 1 as x

sql/core/src/test/resources/sql-tests/inputs/pipe-operators.sql

@@ -84,6 +84,18 @@ table t;
 from t
 |> select 1 as x;
 
+-- Selecting from multiple relations.
+from t, other
+|> select t.x + other.a as z;
+
+-- Selecting from multiple relations with join.
+from t join other on (t.x = other.a)
+|> select t.x + other.a as z;
+
+-- Selecting from lateral view.
+from t lateral view explode(array(100, 101)) as ly
+|> select t.x + ly as z;
+
 -- Selecting a constant.
 table t
 |> select 1 as x;

sql/core/src/test/resources/sql-tests/results/pipe-operators.sql.out

@@ -259,6 +259,42 @@ struct<x:int>
 1
 
 
+-- !query
+from t, other
+|> select t.x + other.a as z
+-- !query schema
+struct<z:int>
+-- !query output
+1
+1
+2
+2
+2
+3
+
+
+-- !query
+from t join other on (t.x = other.a)
+|> select t.x + other.a as z
+-- !query schema
+struct<z:int>
+-- !query output
+2
+2
+
+
+-- !query
+from t lateral view explode(array(100, 101)) as ly
+|> select t.x + ly as z
+-- !query schema
+struct<z:int>
+-- !query output
+100
+101
+101
+102
+
+
 -- !query
 table t
 |> select 1 as x