mysql - Combining two GROUP BY queries grouped by the same column -



mysql - Combining two GROUP BY queries grouped by the same column -

i have transaction table, , tag table. want sum of transactions in transaction table grouped tag. there 2 different types of transaction: "budget" , "actual"

this query homecoming me want "budget" transactions:

select tg.name tag, sum(amount) budgettotal transaction tx bring together transaction_tag tt on tt.transaction_id = tx.id bring together tag tg on tg.id = tt.tag_id tx.type = "budget" , tx.date >= '2011-07-15' , tx.date < '2011-08-15' grouping tg.name

and of course of study pretty much same query "actual" transactions:

select tg.name tag, sum(amount) actualtotal transaction tx bring together transaction_tag tt on tt.transaction_id = tx.id bring together tag tg on tg.id = tt.tag_id tx.type = "actual" , tx.date >= '2011-07-15' , tx.date < '2011-08-15' grouping tg.name

my question: how grouping results of these 2 queries, one, 1 results table 3 columns: tag, budgettotal , actualtotal?

try this:

select tg.name, case when tx.type = "actual" sum(amount) end actualtotal, case when tx.type = "budget" sum(amount) end budgettotal from.... tx.type in ("actual", "budget") , .... grouping tg.name

mysql sql

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