chore: import upstream snapshot with attribution

testing/go/regression/tests/varchar.sql

@@ -0,0 +1,68 @@
+--
+-- VARCHAR
+--
+
+--
+-- Build a table for testing
+-- (This temporarily hides the table created in test_setup.sql)
+--
+
+CREATE TEMP TABLE VARCHAR_TBL(f1 varchar(1));
+
+INSERT INTO VARCHAR_TBL (f1) VALUES ('a');
+
+INSERT INTO VARCHAR_TBL (f1) VALUES ('A');
+
+-- any of the following three input formats are acceptable
+INSERT INTO VARCHAR_TBL (f1) VALUES ('1');
+
+INSERT INTO VARCHAR_TBL (f1) VALUES (2);
+
+INSERT INTO VARCHAR_TBL (f1) VALUES ('3');
+
+-- zero-length char
+INSERT INTO VARCHAR_TBL (f1) VALUES ('');
+
+-- try varchar's of greater than 1 length
+INSERT INTO VARCHAR_TBL (f1) VALUES ('cd');
+INSERT INTO VARCHAR_TBL (f1) VALUES ('c     ');
+
+
+SELECT * FROM VARCHAR_TBL;
+
+SELECT c.*
+   FROM VARCHAR_TBL c
+   WHERE c.f1 <> 'a';
+
+SELECT c.*
+   FROM VARCHAR_TBL c
+   WHERE c.f1 = 'a';
+
+SELECT c.*
+   FROM VARCHAR_TBL c
+   WHERE c.f1 < 'a';
+
+SELECT c.*
+   FROM VARCHAR_TBL c
+   WHERE c.f1 <= 'a';
+
+SELECT c.*
+   FROM VARCHAR_TBL c
+   WHERE c.f1 > 'a';
+
+SELECT c.*
+   FROM VARCHAR_TBL c
+   WHERE c.f1 >= 'a';
+
+DROP TABLE VARCHAR_TBL;
+
+--
+-- Now test longer arrays of char
+--
+-- This varchar_tbl was already created and filled in test_setup.sql.
+-- Here we just try to insert bad values.
+--
+
+INSERT INTO VARCHAR_TBL (f1) VALUES ('abcde');
+
+SELECT * FROM VARCHAR_TBL;