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Table File Type settings in VFP9
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À
06/05/2006 22:36:54
Neil Mc Donald
Cencom Systems P/L
The Sun, Australie
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 9 SP1
Divers
Thread ID:
01119850
Message ID:
01119911
Vues:
28
This message has been marked as the solution to the initial question of the thread.
Hi Neil,

The table type 67 (0x43) is dBASE IV SQL table with no memo field. The table type 50 (0x32) is Visual FoxPro with a Varchar, Varbinary or Blob field (Visual FoxPro 9 and greater). BTW, what specs are you refering to?


>Added Type 67 0x43 (Varchar) at the end
>
>CLEAR
>CLOSE DATABASES ALL
>lcCmd = [CREATE TABLE Testxxx ( cc C(20), mm M] + [)]
>= ShowTableType(lcCmd,48)
>lcCmd = [CREATE TABLE Testxxx ( cc C(20), mm M] + [, ii I AUTOINC] + [)]
>= ShowTableType(lcCmd,49)
>lcCmd = [CREATE TABLE Testxxx ( cc C(20), mm M, ii I AUTOINC] + [, vv v(20)] + [)]
>= ShowTableType(lcCmd,50)
>lcCmd = [CREATE TABLE Testxxx ( cc C(20), mm M, ii I AUTOINC] + [, qq Q(20)] + [)]
>= ShowTableType(lcCmd,50)
>lcCmd = [CREATE TABLE Testxxx ( cc C(20), mm M, ii I AUTOINC] + [, ww W] + [)]
>= ShowTableType(lcCmd,50)
>cCmd = [CREATE TABLE Testxxx ( cc V(20), mm M] + [)]
>= ShowTableType(lcCmd,67)
>RETURN
>*-------------------------------------------------------
>
>FUNCTION ShowTableType(tcCmd, tnExpected)
>&tcCmd
>USE
>lnTableType = ASC(FILETOSTR("Testxxx.dbf"))
>?
>? lcCmd
>? "Table Type: " + TRANSFORM(lnTableType )
>IF lnTableType <> tnExpected
>	?? " - Expected ", TRANSFORM(tnExpected)
>ENDIF	
>RETURN
>
>>
>>>I have been testing Varchar, Varbinary & Blob field types in VFP9.
>>>
>>>One thing I have noticed is that the File type in the DBF Header is only being set to 0x32,
>>>which is the setting for Auto-increment, and not 0x43 as stated in the specs.
>>>
>>>Is this going to cause problems, especially when you have Autoinc and say a Varchar and a Blob field in the same table and the Type set to 0x32, and not 0x43 as it should be.
--sb--
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