常用SQL

MySQL

生成连续数字

with recursive seq(no) as(
    select   1  no
    union all
    select   no+1  no
    from     seq
    where    no < 100
)
select   no
from     seq
;

生成固定长度数字

select substr(concat('00000', cast(RAND() * 1000000 as int)), -6, 6)