SELECT
a.id as id,
a.part as part
left("HelloWOrd",6) as acity,
split(a.part,":") as arrPart,
b.city as cityname
FROM
biao1 a
LEFT JOIN biao2 b on b.cityid = int(left(a.part,6)+0)
where 1=1
在于数据库上,SQLite 数据库就不支持这些函数
${}是FR的公式环境写在{}里面就好了
你这个a.part as part后面少了个逗号吧