使用mysql查询更改mysql表的格式

Question

I have the following table in mysql database

i want to get the result in the following format

Answer 1

This is a typical table pivot issue, try following:

select
    customerName,
    coalesce(max(case when month(`date`) = 1 then paidamount end), '-') as `January` ,
    coalesce(max(case when month(`date`) = 2 then paidamount end), '-') as `February`,
    coalesce(max(case when month(`date`) = 3 then paidamount end), '-') as `March`,
    coalesce(max(case when month(`date`) = 4 then paidamount end), '-') as `April`,
    coalesce(max(case when month(`date`) = 5 then paidamount end), '-') as `May`,
    coalesce(max(case when month(`date`) = 6 then paidamount end), '-') as `June`,
    coalesce(max(case when month(`date`) = 7 then paidamount end), '-') as `July`,
    coalesce(max(case when month(`date`) = 8 then paidamount end), '-') as `August`,
    coalesce(max(case when month(`date`) = 9 then paidamount end), '-') as `September`,
    coalesce(max(case when month(`date`) = 10 then paidamount end), '-') as `October`,
    coalesce(max(case when month(`date`) = 11 then paidamount end), '-') as `November`,
    coalesce(max(case when month(`date`) = 12 then paidamount end), '-') as `December`
from yourtable
group by customerName

Answer 2

You can use this query:

select
    customerName,
    coalesce(sum(case when month(`date`) = 1 then paidamount end), '-') as `January` ,
    coalesce(sum(case when month(`date`) = 2 then paidamount end), '-') as `February`,
    coalesce(sum(case when month(`date`) = 3 then paidamount end), '-') as `March`,
    coalesce(sum(case when month(`date`) = 4 then paidamount end), '-') as `April`,
    coalesce(sum(case when month(`date`) = 5 then paidamount end), '-') as `May`,
    coalesce(sum(case when month(`date`) = 6 then paidamount end), '-') as `June`,
    coalesce(sum(case when month(`date`) = 7 then paidamount end), '-') as `July`,
    coalesce(sum(case when month(`date`) = 8 then paidamount end), '-') as `August`,
    coalesce(sum(case when month(`date`) = 9 then paidamount end), '-') as `September`,
    coalesce(sum(case when month(`date`) = 10 then paidamount end), '-') as `October`,
    coalesce(sum(case when month(`date`) = 11 then paidamount end), '-') as `November`,
    coalesce(sum(case when month(`date`) = 12 then paidamount end), '-') as `December`
from test
group by customerName