Created
July 24, 2017 04:04
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Build UPSERT (INSERT OR UPDATE ) SQL for PostgreSQL
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Sub test___BuildUpsertSql() | |
Dim res As String | |
res = BuildUpsertSql("sample_table", _ | |
"sample_pkey", _ | |
"user_name, user_email, user_address", _ | |
"test_user, [email protected], Tokyo") | |
Debug.Print res | |
'# INSERT INTO sample_table( | |
'# user_name, user_email, user_address | |
'# ) | |
'# VALUES ( | |
'# test_user, [email protected], Tokyo | |
'# ) | |
'# ON CONFLICT ON CONSTRAINT sample_pkey DO UPDATE | |
'# SET user_name = EXCLUDED.user_name | |
'# , user_email = EXCLUDED. user_email | |
'# , user_address = EXCLUDED. user_address | |
End Sub | |
'#----------------------------------------------------------------------------- | |
'# Build INSERT OR UPDATE SQL for PostgreSQL | |
'#----------------------------------------------------------------------------- | |
Function BuildUpsertSql(sTable As String, _ | |
sTableKey As String, _ | |
sHeaders As String, _ | |
sValues As String) As String | |
Dim aHeaders() As String | |
Dim sUpdValues As String | |
aHeaders = Split(sHeaders, ",") | |
sUpdValues = "" | |
'# head: | a | b | c | d | | |
'# => a = EXCLUDED.a , b = EXCLUDED.b , c = EXCLUDED.c , d = EXCLUDED.d | |
Dim h As Long | |
For h = LBound(aHeaders) To UBound(aHeaders) | |
If h <> LBound(aHeaders) Then sUpdValues = sUpdValues & " ," | |
sUpdValues = sUpdValues & " " & aHeaders(h) & " = EXCLUDED." & aHeaders(h) & vbCrLf | |
Next | |
Dim sSql As String | |
sSql = " INSERT INTO $_TABLE_$( " & vbCrLf | |
sSql = sSql & " $_HEADERS_$ " & vbCrLf | |
sSql = sSql & " )" & vbCrLf | |
sSql = sSql & " VALUES (" & vbCrLf | |
sSql = sSql & " $_VALUES_$ " & vbCrLf | |
sSql = sSql & " )" & vbCrLf | |
sSql = sSql & " ON CONFLICT ON CONSTRAINT $_KEY_$ DO UPDATE " & vbCrLf | |
sSql = sSql & " SET " & sUpdValues | |
sSql = Replace(sSql, "$_TABLE_$", sTable) | |
sSql = Replace(sSql, "$_HEADERS_$", sHeaders) | |
sSql = Replace(sSql, "$_VALUES_$", sValues) | |
sSql = Replace(sSql, "$_KEY_$", sTableKey) | |
BuildUpsertSql = sSql | |
End Function |
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