Merge pull request #11788 from ydb-platform/mergelibs-241120-1113

Library import 241120-1113

1 files changed, 52 insertions, 0 deletions

diff --git a/yql/essentials/tests/postgresql/cases/limit.sql b/yql/essentials/tests/postgresql/cases/limit.sql
new file mode 100644
index 0000000000..bfd8e5b54e
--- /dev/null
+++ b/yql/essentials/tests/postgresql/cases/limit.sql
@@ -0,0 +1,52 @@
+--
+-- LIMIT
+-- Check the LIMIT/OFFSET feature of SELECT
+--
+SELECT ''::text AS two, unique1, unique2, stringu1
+		FROM onek WHERE unique1 > 50
+		ORDER BY unique1 LIMIT 2;
+SELECT ''::text AS five, unique1, unique2, stringu1
+		FROM onek WHERE unique1 > 60
+		ORDER BY unique1 LIMIT 5;
+SELECT ''::text AS two, unique1, unique2, stringu1
+		FROM onek WHERE unique1 > 60 AND unique1 < 63
+		ORDER BY unique1 LIMIT 5;
+SELECT ''::text AS three, unique1, unique2, stringu1
+		FROM onek WHERE unique1 > 100
+		ORDER BY unique1 LIMIT 3 OFFSET 20;
+SELECT ''::text AS zero, unique1, unique2, stringu1
+		FROM onek WHERE unique1 < 50
+		ORDER BY unique1 DESC LIMIT 8 OFFSET 99;
+SELECT ''::text AS eleven, unique1, unique2, stringu1
+		FROM onek WHERE unique1 < 50
+		ORDER BY unique1 DESC LIMIT 20 OFFSET 39;
+SELECT ''::text AS ten, unique1, unique2, stringu1
+		FROM onek
+		ORDER BY unique1 OFFSET 990;
+SELECT ''::text AS five, unique1, unique2, stringu1
+		FROM onek
+		ORDER BY unique1 OFFSET 990 LIMIT 5;
+SELECT ''::text AS five, unique1, unique2, stringu1
+		FROM onek
+		ORDER BY unique1 LIMIT 5 OFFSET 900;
+-- Test null limit and offset.  The planner would discard a simple null
+-- constant, so to ensure executor is exercised, do this:
+select * from int8_tbl limit (case when random() < 0.5 then null::bigint end);
+select * from int8_tbl offset (case when random() < 0.5 then null::bigint end);
+-- Test assorted cases involving backwards fetch from a LIMIT plan node
+begin;
+rollback;
+select sum(tenthous) as s1, sum(tenthous) + random()*0 as s2
+  from tenk1 group by thousand order by thousand limit 3;
+SELECT  thousand
+		FROM onek WHERE thousand < 5
+		ORDER BY thousand FETCH FIRST 2 ROW ONLY;
+-- SKIP LOCKED and WITH TIES are incompatible
+SELECT  thousand
+		FROM onek WHERE thousand < 5
+		ORDER BY thousand FETCH FIRST 1 ROW WITH TIES FOR UPDATE SKIP LOCKED;
+-- should fail
+SELECT ''::text AS two, unique1, unique2, stringu1
+		FROM onek WHERE unique1 > 50
+		FETCH FIRST 2 ROW WITH TIES;
+-- leave these views