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Posted by Steve on 09/15/05 06:17
I have a SQL query I'm invoking via VB6 & ADO 2.8, that requires three
"Left Outer Joins" in order to return every transaction for a specific
set of criteria.
Using three "Left Outer Joins" slows the system down considerably.
I've tried creating a temp db, but I can't figure out how to execute
two select commands. (It throws the exception "The column prefix
'tempdb' does not match with a table name or alias name used in the
query.")
Looking for suggestions (and a lesson or two!) This is my first attempt
at SQL.
Current (working, albeit slowly) Query Below
TIA
SELECT
LEDGER_ENTRY.entry_amount,
LEDGER_TRANSACTION.credit_card_exp_date,
LEDGER_ENTRY.entry_datetime,
LEDGER_ENTRY.employee_id,
LEDGER_ENTRY.voucher_explanation,
LEDGER_ENTRY.card_reader_used_ind,
STAY.room_id,
GUEST.guest_lastname,
GUEST.guest_firstname,
STAY.arrival_time,
STAY.departure_time,
STAY.arrival_date,
STAY.original_departure_date,
STAY.no_show_status,
STAY.cancellation_date,
FOLIO.house_acct_id,
FOLIO.group_code,
LEDGER_TRANSACTION.original_receipt_id
FROM
mydb.dbo.LEDGER_ENTRY LEDGER_ENTRY,
mydb.dbo.LEDGER_TRANSACTION LEDGER_TRANSACTION,
mydb.dbo.FOLIO FOLIO
LEFT OUTER JOIN
mydb.dbo.STAY_FOLIO STAY_FOLIO
ON
FOLIO.folio_id = STAY_FOLIO.folio_id
LEFT OUTER JOIN
mydb.dbo.STAY STAY
ON
STAY_FOLIO.stay_id = STAY.stay_id
LEFT OUTER JOIN
mydb.dbo.GUEST GUEST
ON
FOLIO.guest_id = GUEST.guest_id
WHERE
LEDGER_ENTRY.trans_id = LEDGER_TRANSACTION.trans_id
AND FOLIO.folio_id = LEDGER_TRANSACTION.folio_id
AND LEDGER_ENTRY.payment_method='3737******6100'
AND LEDGER_ENTRY.property_id='abc123'
ORDER BY
LEDGER_ENTRY.entry_datetime DESC
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