Hi, all As a distributed database middleware, ShardingSphere is on the way to support all the SQL syntax as possible as we can.
This current supporting detail of `DISTINCT` syntax is as follows, *Available SQL Of ShardingSphere* SELECT DISTINCT * FROM tbl_name WHERE col1 = ? SELECT DISTINCT col1 FROM tbl_name SELECT DISTINCT col1, col2, col3 FROM tbl_name SELECT COUNT(DISTINCT col1) FROM tbl_name SELECT SUM(DISTINCT col1) FROM tbl_name SELECT DISTINCT col1 FROM tbl_name ORDER BY col1 SELECT DISTINCT col1 FROM tbl_name ORDER BY col2 SELECT COUNT(DISTINCT col1) FROM tbl_name GROUP BY col1 SELECT COUNT(DISTINCT col1), col1 FROM tbl_name GROUP BY col1 *Unavailable SQL Of ShardingSphere* SELECT DISTINCT(col1) FROM tbl_name SELECT COUNT(DISTINCT col1 + col2) FROM tbl_name SELECT AVG(DISTINCT col1) FROM tbl_name SELECT COUNT(DISTINCT col1), SUM(DISTINCT col1) FROM tbl_name SELECT col1, COUNT(DISTINCT col2) FROM tbl_name GROUP BY col1 SELECT SUM(DISTINCT col1), SUM(col1) FROM tbl_name The next step planned is to support 1st, 2nd, 3rd, 5th, 6th of *Unavailable SQL*, and add unit cases for them as well. The expected end time of this task is about before January 4, 2019. More details will be presented on the issues and Prs on gitHub, and any progress will also be updated afterward here. Welcome your suggestions, and wish you *merry **Christmas* --------------------------------- Juan Pan (Trista) Apache ShardingSphere
