Merge branch 'rightlib' into mergelibs-241120-1113

1 files changed, 27 insertions, 0 deletions

diff --git a/yql/essentials/tests/sql/suites/expr/dict_builtins_null_lookup.sql b/yql/essentials/tests/sql/suites/expr/dict_builtins_null_lookup.sql
new file mode 100644
index 0000000000..87e1bd0ff9
--- /dev/null
+++ b/yql/essentials/tests/sql/suites/expr/dict_builtins_null_lookup.sql
@@ -0,0 +1,27 @@
+/* postgres can not */
+
+$d2 = AsDict(AsTuple(1/1, "bar"));
+$d3 = AsDict(AsTuple(1/0, "baz"));
+
+$t1 = AsDict(AsTuple(AsTuple(1,   "key"), AsTuple(1,   "value")));
+$t2 = AsDict(AsTuple(AsTuple(1/1, "key"), AsTuple(2/1, "value")));
+$t3 = AsDict(AsTuple(AsTuple(1/0, "key"), AsTuple(123, "value")));
+
+SELECT
+    DictContains($d2, null),  -- false, no such key
+    DictContains($d3, null),  -- true, null is convertible to Nothing<T> for any T
+
+    DictLookup($d2, null),    -- Nothing(String?), no such key
+    DictLookup($d3, null);    -- Just("baz"), null is convertible to Nothing<T> for any T
+
+
+SELECT
+    DictContains($t1, AsTuple(1, "keyy")),       -- false, missing key
+    DictContains($t1, AsTuple(1, "key")),        -- true,  match
+    DictContains($t1, Just(AsTuple(1, "key"))),  -- true,  match with optional
+
+    DictContains($t2, AsTuple(null, "key")),   -- false, no such key
+    DictContains($t3, AsTuple(null, "key")),   -- true, null is convertible to Nothing<T> for any T
+
+    DictLookup($t2, AsTuple(null, "key")),     -- Nothing(Tuple<Int32?, String>?), no such key
+    DictLookup($t3, AsTuple(null, "key"));     -- Just(AsTuple(123, "value")), null is convertible to Nothing<T> for any T