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

Library import 241120-1113

1 files changed, 31 insertions, 0 deletions

diff --git a/yql/essentials/tests/postgresql/cases/char.sql b/yql/essentials/tests/postgresql/cases/char.sql
new file mode 100644
index 0000000000..de51cce09a
--- /dev/null
+++ b/yql/essentials/tests/postgresql/cases/char.sql
@@ -0,0 +1,31 @@
+--
+-- CHAR
+--
+-- fixed-length by value
+-- internally passed by value if <= 4 bytes in storage
+SELECT char 'c' = char 'c' AS true;
+--
+-- Build a table for testing
+--
+CREATE TABLE CHAR_TBL(f1 char);
+INSERT INTO CHAR_TBL (f1) VALUES ('a');
+INSERT INTO CHAR_TBL (f1) VALUES ('A');
+-- any of the following three input formats are acceptable
+INSERT INTO CHAR_TBL (f1) VALUES ('1');
+INSERT INTO CHAR_TBL (f1) VALUES (2);
+INSERT INTO CHAR_TBL (f1) VALUES ('3');
+-- zero-length char
+INSERT INTO CHAR_TBL (f1) VALUES ('');
+INSERT INTO CHAR_TBL (f1) VALUES ('c     ');
+SELECT c.*
+   FROM CHAR_TBL c
+   WHERE c.f1 = 'a';
+DROP TABLE CHAR_TBL;
+--
+-- Now test longer arrays of char
+--
+CREATE TABLE CHAR_TBL(f1 char(4));
+INSERT INTO CHAR_TBL (f1) VALUES ('a');
+INSERT INTO CHAR_TBL (f1) VALUES ('ab');
+INSERT INTO CHAR_TBL (f1) VALUES ('abcd');
+INSERT INTO CHAR_TBL (f1) VALUES ('abcd    ');