test(stage): basic test for select from stage.

Author: youngsofun

tests/suites/0_stateless/20+_others/20_0011_select_stage.result

@@ -0,0 +1,2 @@
+1	2	3
+4	5	6

tests/suites/0_stateless/20+_others/20_0011_select_stage.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+. "$CURDIR"/../../../shell_env.sh
+
+echo "drop stage if exists s1;" | $MYSQL_CLIENT_CONNECT
+echo "create stage s1;" | $MYSQL_CLIENT_CONNECT
+
+echo "drop table if exists t1;" | $MYSQL_CLIENT_CONNECT
+echo "CREATE TABLE t1 (id INT, name VARCHAR, age INT);" | $MYSQL_CLIENT_CONNECT
+
+echo "insert into t1 (id,name,age) values(1,'2',3), (4, '5', 6);" | $MYSQL_CLIENT_CONNECT
+echo " copy into @s1 from t1 FILE_FORMAT = (type = 'PARQUET');" | $MYSQL_CLIENT_CONNECT
+
+echo "select * from @s1;" | $MYSQL_CLIENT_CONNECT