4 commits

Author	SHA1	Message	Date
shenglian zhou	e6c1bd7fce	add length / char_length test case	2021-12-13 14:49:41 +08:00
shenglian zhou	4d407d81bb	add concat_ws test case	2021-12-10 18:50:52 +08:00
shenglian zhou	8f82baa786	add string concat test cases	2021-12-10 16:28:06 +08:00
shenglian zhou	0f36089c26	generate new data for string test	2021-12-08 17:08:36 +08:00