-3
我可以知道如何選擇一個項目而不重複嗎?這是事情。如何選擇聲明以避免重複項目
我在學生桌上的第一列(例如:studentid = 123
)上的值相同。
而另一列在帳戶表中具有相同的值(123
)。
如果我只想在學生表內連接帳戶表中選擇一個值,該怎麼辦?我使用distinct
,但它仍然給出兩個值,因爲其他列具有不同的值。
目前查詢:
SELECT DISTINCT SAS_Student.SASI_MatricNo
,SAS_Student.SASI_Name
,SAS_Student.SASI_PgId
,SAS_Student.SASI_ICNo
,SAS_Student.SASI_CurSem
,SAS_AccountsDetails.TransTempCode
,SAS_AccountsDetails.TempAmount
,SAS_AccountsDetails.TempPaidAmount
,SAS_AccountsDetails.PostStatus
,SAS_AccountsDetails.Ref1
,SAS_AccountsDetails.NoKelompok
,SAS_AccountsDetails.NoWarran
,SAS_AccountsDetails.AmaunWarran
,SAS_AccountsDetails.noAkaunPelajar
,SAS_AccountsDetails.StatusBayaran
FROM SAS_AccountsDetails
INNER JOIN SAS_sponsorinvoice ON sas_sponsorinvoice.creditref1 = SAS_AccountsDetails.ref1
OR sas_sponsorinvoice.creditref1 = SAS_AccountsDetails.refcode
INNER JOIN sas_student ON sas_sponsorinvoice.creditref = sas_student.sasi_matricno
WHERE sas_sponsorinvoice.batchcode = 'B000000000000303'
SASI_MatricNo SASI_Name SASI_PgId SASI_ICNo SASI_CurSem TransTempCode TempAmount TempPaidAmount PostStatus Ref1 NoKelompok NoWarran AmaunWarran noAkaunPelajar StatusBayaran
"160553" "RATHIYMALER A/P MANIAM" "32" "911229086066" 2 "TRT000000000000054" 0 0 "Ready" "001" "" "" 0 "" ""
"160553" "RATHIYMALER A/P MANIAM" "32" "911229086066" 2 "" 0 0 "Posted" "001" "" "" 0 "" ""
"160553" "RATHIYMALER A/P MANIAM" "32" "911229086066" 2 "TRT000000000000019" 0 0 "Ready" "001" "" "" 0 "" ""
提供一些示例數據和預期輸出。您如何選擇要包含在結果集中的哪條記錄? – HoneyBadger
告訴我們你試過了什麼,你的表,查詢和預期輸出 –
也是這個與mysql或postgresql有關嗎? –