Skip to main content

Export Query and Table structure details from Access using VBA

Using Excel VBA and Microsoft SQL Server As Reporting Enhancement: A Prototype Of Financial Reporting ApplicationI am busy migrating an Access system, and documenting, so I need a way to document the SQL Queries and Table details. After initially trying to get Access's documentation tool to give me what I needed, I started looking for alternatives.

The below code is partly mine and based on the websites mentioned in the comments. Essentially it exports Query and Table information into 3 files in the tmp directory. I tried to do the SQL queries using CSV but even using "'" and """ did not work, so change it to TABS.

This means that you can get most of the details for structures in a usable format (not like the Database Documenter which provides unusable details)

so here is the code that I ended up with, thought I would share it:





Public Sub GetQrysAndTbls()
' Using a few items found on the internet write query and table definitions
' to a text file including field detail for tables


' Original posts found at:
' http://www.techrepublic.com/article/how-to-create-a-list-of-tables-or-queries-from-access/5047664
' http://forums.techguy.org/business-applications/526520-solved-getting-field-names-tables.html
' http://www.everythingaccess.com/tutorials.asp?ID=Dump-table-details-in-VBA-(DAO)
' http://www.access-programmers.co.uk/forums/showthread.php?t=28219
    Dim db As Database
    Dim Qry As QueryDef
    Dim QryCount As Integer
    Dim Tbl As TableDef
    Dim TblCount As Integer
    Dim fso, TxtFile
    
    ' initialize variables
    Set db = CurrentDb
    QryCount = 0
    TblCount = 0
    
    ' First the Querys, use txt file since "," 's mess up in CSV
    Set fso = CreateObject("Scripting.FileSystemObject")
    Set TxtFile = fso.CreateTextFile("c:\tmp\QryDefs.txt", True)
    TxtFile.writeline ("Query name" & vbTab & "SQL String")
    For Each Qry In db.QueryDefs
      ' erase any  CrLf, could also add a "," instead also make sure that the query is a string
      TxtFile.writeline (Qry.Name & vbTab & Replace(Qry.SQL, vbCrLf, ""))
      QryCount = QryCount + 1
    Next
    TxtFile.Close
    
    ' Now the Tables and Field definitions
    Set TxtFile = fso.CreateTextFile("c:\tmp\TableDefs.csv", True)
    ' Put the header line in place
    TxtFile.writeline ("Table Name:,Fields: Field Name,Field Type,Size,Required,Default,Description")
    For Each Tbl In db.TableDefs
      If Tbl.Attributes = 0 Then 'Ignores System Tables
        ' place the table name in the first line,
        TxtFile.write (Tbl.Name)
        ' write the fields leaving space at the front of each for formatting purposes
        For Each fld In Tbl.Fields
          TxtFile.writeline ("," & fld.Name & "," & FieldTypeName(fld) & "," & fld.Size & "," & _
              IIf(CBool(fld.Required), "True", "False") & "," & CStr(fld.DefaultValue) & "," & GetDescrip(fld))
        Next
        TblCount = TblCount + 1
      End If
    Next
    TxtFile.Close
    
    ' Now the Tables and Index definitions
    Set TxtFile = fso.CreateTextFile("c:\tmp\TableIndexs.csv", True)
    ' Put the header line in place
    TxtFile.writeline ("Table Name:,Indexes: Name,Primary,Unique,NoNulls,Fields")
    For Each Tbl In db.TableDefs
      If Tbl.Attributes = 0 Then 'Ignores System Tables
        ' place the table name in the first line,
        TxtFile.write (Tbl.Name)
        ' write the fields leaving space at the front of each for formatting purposes
        For Each idx In Tbl.Indexes
          TxtFile.write ("," & idx.Name & "," & idx.Primary & "," & idx.Unique & "," & idx.IgnoreNulls)
          ' Now write the fields
          For Each fld In idx.Fields
            TxtFile.write ("," & fld.Name)
          Next
          TxtFile.writeline ("")
        Next
      End If
    Next
    TxtFile.Close
    
    MsgBox "Wrote: " & Str$(QryCount) & " Queries, and " & Str$(TblCount) & " table definiations to file."
        
    ' close the files and db
    db.Close
    Set db = Nothing
End Sub


Function GetDescrip(ByVal obj As Object) As String
    On Error Resume Next
    GetDescrip = obj.Properties("Description")
End Function




Function FieldTypeName(ByVal fld As DAO.Field) As String
    'Purpose: Converts the numeric results of DAO Field.Type to text.
    Dim strReturn As String    'Name to return


    Select Case CLng(fld.Type) 'fld.Type is Integer, but constants are Long.
        Case dbBoolean: strReturn = "Yes/No"            ' 1
        Case dbByte: strReturn = "Byte"                 ' 2
        Case dbInteger: strReturn = "Integer"           ' 3
        Case dbLong                                     ' 4
            If (fld.Attributes And dbAutoIncrField) = 0& Then
                strReturn = "Long Integer"
            Else
                strReturn = "AutoNumber"
            End If
        Case dbCurrency: strReturn = "Currency"         ' 5
        Case dbSingle: strReturn = "Single"             ' 6
        Case dbDouble: strReturn = "Double"             ' 7
        Case dbDate: strReturn = "Date/Time"            ' 8
        Case dbBinary: strReturn = "Binary"             ' 9 (no interface)
        Case dbText                                     '10
            If (fld.Attributes And dbFixedField) = 0& Then
                strReturn = "Text"
            Else
                strReturn = "Text (fixed width)"        '(no interface)
            End If
        Case dbLongBinary: strReturn = "OLE Object"     '11
        Case dbMemo                                     '12
            If (fld.Attributes And dbHyperlinkField) = 0& Then
                strReturn = "Memo"
            Else
                strReturn = "Hyperlink"
            End If
        Case dbGUID: strReturn = "GUID"                 '15


        'Attached tables only: cannot create these in JET.
        Case dbBigInt: strReturn = "Big Integer"        '16
        Case dbVarBinary: strReturn = "VarBinary"       '17
        Case dbChar: strReturn = "Char"                 '18
        Case dbNumeric: strReturn = "Numeric"           '19
        Case dbDecimal: strReturn = "Decimal"           '20
        Case dbFloat: strReturn = "Float"               '21
        Case dbTime: strReturn = "Time"                 '22
        Case dbTimeStamp: strReturn = "Time Stamp"      '23


        'Constants for complex types don't work prior to Access 2007.
        Case 101&: strReturn = "Attachment"         'dbAttachment
        Case 102&: strReturn = "Complex Byte"       'dbComplexByte
        Case 103&: strReturn = "Complex Integer"    'dbComplexInteger
        Case 104&: strReturn = "Complex Long"       'dbComplexLong
        Case 105&: strReturn = "Complex Single"     'dbComplexSingle
        Case 106&: strReturn = "Complex Double"     'dbComplexDouble
        Case 107&: strReturn = "Complex GUID"       'dbComplexGUID
        Case 108&: strReturn = "Complex Decimal"    'dbComplexDecimal
        Case 109&: strReturn = "Complex Text"       'dbComplexText
        Case Else: strReturn = "Field type " & fld.Type & " unknown"
    End Select


    FieldTypeName = strReturn
End Function
:

Comments

Popular posts from this blog

Bitcoin / Cryptocurrency – what is it and how can I benefit

What is it I started investigating Bitcoin when it was worth just over $1000 a bitcoin. I was interested in what it was and how it worked. A lot of people are saying we missed the boat, but I believe that everyone should at least try put a little money in now, or at least use a faucet (see below) to make a little micro-currency. You can read a Wiki article about bitcoin and its history etc. But what you need to know is that it is a currency, that is independent of country. No one really knows who invented the concept of a cryptocurrency since the person who published the paper used a nom de plume. All new cryptocurrencies work more or less the same way as Bitcoin. So as I explain below I interchange these terms. Bitcoin is the original cryptocurrency. How Bitcoin works The currency releases a coin based on a mathematical formula. There will never be more than 21 million bitcoins (other cryptocurrencies do not work like this). Each bitcoin can have divided into one hundred mil...

iTunes song purchased on iPhone not showing in the library, only show purchased

I recently purchase an album on my iPhone, and then when I wanted to mke sure it was in my iTunes library it was not there, but in the Store I found it and it said purchased. If I clieck on Check for Available Downloads, it said nothing. After some search i found this: https://discussions.apple.com/thread/5551143 Which had this fact: " Music can't be redownloaded in all countries, so depending upon where you are you might not be able to redownload music. If music does show as a category, but not that album, then is it hidden :   http://support.apple.com/kb/HT4919 " I then connected my iPhone and saw that to copy a purhcase your computer's iTunes via File > Devices > Transfer Purchases

Access conversion NOTE1: default DateSerial in VBA/Access to SQL

I have started slowly converting my Access database to SQL. The reason is that I would like to take the application online. After trying to use Access's (version 2007) transfer tool, which did not work that well. I found Microsoft's SQL Migration Assistant 2008 for Access, nicknamed SSMA. Which you can download here . When you install there is a niggle about the license, which you need to download into their specified directory and it must be the name they provide. So about the create table. My one table would not convert and I could not see why. After looking at the SQL command I saw the problem was the use of DateSerial. I googled a few sites and could not find an answer The CREATE TABLE line was: [RequireUntilDate] datetime2(0) DEFAULT DateSerial(1980,1,1) NOT NULL, I clicked on the whole command and copied it and then in SQL Server Management Studio, I tried to create the table and found that if I specified the date in US date format it worked: [RequireUnti...