YQL-19747 Complete type name as a function argument

As I understand, type name should not be completed at `SELECT |`, so I added a check that we are at `invoke_expr` context.

Currently composite type keywords are suggested at `SELECT |` and also are uppercased. I will fix it separately when this merged during
- https://github.com/users/vityaman/projects/5?pane=issue&itemId=105056723&issue=vityaman%7Cydb%7C8

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- Related to https://github.com/ydb-platform/ydb/issues/9056
- Related to https://github.com/users/vityaman/projects/5/views/1?pane=issue&itemId=105056423&issue=vityaman%7Cydb%7C7

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Pull Request resolved: https://github.com/ytsaurus/ytsaurus/pull/1182
commit_hash:e87565867cf9fa82d9ac49a88d59b293d6686fe7

1 files changed, 16 insertions, 0 deletions

diff --git a/yql/essentials/sql/v1/complete/sql_complete_ut.cpp b/yql/essentials/sql/v1/complete/sql_complete_ut.cpp
index ade78e81a76..10d358c8d3e 100644
--- a/yql/essentials/sql/v1/complete/sql_complete_ut.cpp
+++ b/yql/essentials/sql/v1/complete/sql_complete_ut.cpp
@@ -386,6 +386,22 @@ Y_UNIT_TEST_SUITE(SqlCompleteTests) {
         UNIT_ASSERT_VALUES_EQUAL(Complete(engine, {"SELECT OPTIONAL<"}), expected);
     }
 
+    Y_UNIT_TEST(TypeNameAsArgument) {
+        auto engine = MakeSqlCompletionEngineUT();
+        {
+            TVector<TCandidate> expected = {
+                {TypeName, "Uint64"},
+            };
+            UNIT_ASSERT_VALUES_EQUAL(Complete(engine, {"SELECT Nothing(Uint"}), expected);
+        }
+        {
+            TVector<TCandidate> expected = {
+                {Keyword, "OPTIONAL<"},
+            };
+            UNIT_ASSERT_VALUES_EQUAL(Complete(engine, {"SELECT Nothing(Option"}), expected);
+        }
+    }
+
     Y_UNIT_TEST(UTF8Wide) {
         auto engine = MakeSqlCompletionEngineUT();
         UNIT_ASSERT_VALUES_EQUAL(Complete(engine, {"\xF0\x9F\x98\x8A"}).size(), 0);