mysql 行变列的例句

mysql 行变列的例句

select distinct item.reportoid, item.lineoid,  item.accountoid, sun.amount, mon.amount, tue.amount, wes.amount, thur.amount, fri.amount, sat.amount
from expenseitem item
left join (select reportoid, accountoid, lineoid, amount, itemDate from expenseitem
 where itemDate = '2007-11-04' ) sun
 on item.reportoid = sun.reportoid and
  item.accountoid = sun.accountoid and
  item.lineoid = sun.lineoid and
  item.itemDate = sun.itemDate
left join (select reportoid, accountoid,  lineoid, amount, itemDate from expenseitem
 where itemDate = adddate('2007-11-04', 1) ) mon
 on item.reportoid = mon.reportoid and
  item.accountoid = mon.accountoid and
  item.lineoid = mon.lineoid and
  item.itemDate = mon.itemDate
left join (select reportoid, accountoid,  lineoid,amount, itemDate from expenseitem
 where itemDate = adddate('2007-11-04', 2)) tue
 on item.reportoid = tue.reportoid and
  item.accountoid = tue.accountoid and
  item.lineoid = tue.lineoid and
  item.itemDate = tue.itemDate
left join (select reportoid, accountoid,  lineoid,amount, itemDate from expenseitem
 where itemDate = adddate('2007-11-04', 3)  ) wes
 on item.reportoid = wes.reportoid and
  item.accountoid = wes.accountoid and
  item.lineoid = wes.lineoid and
  item.itemDate = wes.itemDate
left join (select reportoid, accountoid,  lineoid,amount, itemDate from expenseitem
 where itemDate = adddate('2007-11-04', 4)  ) thur
 on item.reportoid = thur.reportoid and
  item.accountoid = thur.accountoid and
  item.lineoid = thur.lineoid and
  item.itemDate = thur.itemDate
left join (select reportoid, accountoid,  lineoid,amount, itemDate from expenseitem
 where itemDate = adddate('2007-11-04', 5)  ) fri
 on item.reportoid = fri.reportoid and
  item.accountoid = fri.accountoid and
  item.lineoid = fri.lineoid and
  item.itemDate = fri.itemDate
left join (select reportoid, accountoid,  lineoid,amount, itemDate from expenseitem
 where itemDate = adddate('2007-11-04', 6) ) sat
 on item.reportoid = sat.reportoid and
  item.accountoid = sat.accountoid and
  item.lineoid = sat.lineoid and
  item.itemDate = sat.itemDate
where item.reportoid = 3712
order by reportoid, accountoid;