错误1241（21000）：操作数应在多个选择中包含1列

Question

   select
        (select sum(sal)as sal_tp, sum(local_conv) as lc_tp from budget_tp),
        (select sum(sal) from budget_fos_veri) as sal_veri,
        (select sum(sal) from budget_fos_picks)as sal_pick,
        (select sum(sal) from budget_bpo_other)as sal_bpo;

I get

ERROR 1241 (21000): Operand should contain 1 column(s).

Is there any way for my requirement to complete? The query is actually a sample. I have many tables with multiple columns, I would like to view the sum of individual columns of all the tables, I just tried to view two at a time in first line I get this error, if I try to retrieve only one column then its fine.

Answer 1

Each subquery should return one field. Try thy query -

   select
        (select sum(sal) from budget_tp) as sal_tp,
        (select sum(local_conv) from budget_tp) as lc_tp,
        (select sum(sal) from budget_fos_veri) as sal_veri,
        (select sum(sal) from budget_fos_picks)as sal_pick,
        (select sum(sal) from budget_bpo_other)as sal_bpo;

Another one:

   select
        (select concat(sum(sal), ',' ,sum(local_conv)) from budget_tp) as sal_tp_and_lc_tp
        (select sum(local_conv) from budget_tp) as lc_tp,
        ...