存储过程中,如何把多个select结果,合并成一个结果集返回
存储过程中,怎么把多个select结果,合并成一个结果集返回?
select userid,username,price,vol from table_a ...
select userid,username,price,vol from table_b...
要让这两句形成一个结果集。怎么办?
------解决方案--------------------
select userid,username,price,vol from table_a ...
union all
select userid,username,price,vol from table_b...
------解决方案--------------------
select userid,username,price,vol from table_a ...
select userid,username,price,vol from table_b...
要让这两句形成一个结果集。怎么办?
------解决方案--------------------
select userid,username,price,vol from table_a ...
union all
select userid,username,price,vol from table_b...
------解决方案--------------------
- SQL code
select userid,username,price,vol from table_a ... union all--不去掉上下两语句的重复行 select userid,username,price,vol from table_b... select userid,username,price,vol from table_a ... union--去掉上下两语句的重复行 select userid,username,price,vol from table_b...
------解决方案--------------------
select userid,username,price,vol from table_a ...
union all
select userid,username,price,vol from table_b...