-- mysql java 根据表名转为mybatis中resultMap，部分常用类型匹配
select concat(
'<result column="',
COLUMN_NAME,
'" property="',
leftstr,
if(leftstr = '',SUBSTRING(rightstr,1,1),UPPER(SUBSTRING(rightstr,1,1))),
SUBSTRING(rightstr,2,length(rightstr)),
'" jdbcType="',
(case DATA_TYPE
when 'varchar' then 'VARCHAR'
when 'int' then 'INTEGER'
when 'double' then 'DOUBLE'
when 'float' then 'DOUBLE'
when 'datetime' then 'VARCHAR'
end),
'" />'
) as java_variable
from (
select
ORDINAL_POSITION,
COLUMN_NAME,
substr(COLUMN_NAME,1,instr(COLUMN_NAME,'_')-1) leftstr,
substr(COLUMN_NAME,instr(COLUMN_NAME,'_' )+1,
length(COLUMN_NAME)-instr(COLUMN_NAME,'_')) rightstr,
DATA_TYPE,
COLUMN_COMMENT from information_schema.COLUMNS
where table_name = 'teacher' -- 填写所需要的表名
) a order by ORDINAL_POSITION
-- 支持mysql8.0+
