1、JSON_LENGTH:
select content from test1 ["1","2","3","4","5","6"] select json_length(content) from test1 6
2、JSON_VALID 判断是否是json : 0 否,1 是
3、
1、JSON_LENGTH:
select content from test1 ["1","2","3","4","5","6"] select json_length(content) from test1 6
2、JSON_VALID 判断是否是json : 0 否,1 是
3、