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Access Expression to parse a delimited string
Posted on 2012-12-28
I have an Access table containing a pipe-delimited string in a single field. The string looks something like this...
Fieldname = fullText
value1|other value2|some other value3|yet another value4|and a final value5|
I need help writing an Access Expression which will take the string above and break it into separate fields like this...
Field Value
value1 value1
value2 other value2
value3 some other value3
value4 yet another value4
value5 and a final value5
Can you help me with this? (I'm more familiar with expressions than VB but will accept a VB approach if you can walk me through how to implement.)
Fieldname = fullText
value1|other value2|some other value3|yet another value4|and a final value5|
I need help writing an Access Expression which will take the string above and break it into separate fields like this...
Field Value
value1 value1
value2 other value2
value3 some other value3
value4 yet another value4
value5 and a final value5
Can you help me with this? (I'm more familiar with expressions than VB but will accept a VB approach if you can walk me through how to implement.)
[X]
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10 Comments
Active 5 days ago
Will the string always have the same amount of delimiters?
What about "Blanks"?: SomeText||SomeMoreText
Is this string field in the same table that "target" fields are in?
What about "Blanks"?: SomeText||SomeMoreText
Is this string field in the same table that "target" fields are in?
Answers:
1) Yes, the string will always have the same number of delimiters
2) Yes, there may be blanks between delimiters, like ||
3) Yes, the string field is in the same table as the target fields but could be separated if necessary.
1) Yes, the string will always have the same number of delimiters
2) Yes, there may be blanks between delimiters, like ||
3) Yes, the string field is in the same table as the target fields but could be separated if necessary.
So in your example are you saying you would end up with a table having 5 columns with each delimited string in each field? If so, couldn't you just import the delimited file straight in to the table?
Active 5 days ago
<2) Yes, there may be blanks between delimiters, like ||>
So then what do you want to happen in this case...?
I think IrogSinta has your solution here.
So then what do you want to happen in this case...?
I think IrogSinta has your solution here.
I wish I could, but the string is quite long and the whole string is actually not available for me to import. It is stored broken up into 12 132 character fields in its original table. What I've done so far is to concatenate all this so at least I have the full string in one field. Now I need your help in parsing the string at each pipe. Easy to do in Excel, I'm just not familiar with how to write this expression in Access. Thanks in advance!
To answer the other comment above if there's a blank between pipe separators I would expect a null value to be written in that field. Does that make sense?
Assuming you already have a table you want to store these 5 fields into you could use code similar to this:
Private Sub ParseAString()
Dim rst As Recordset
Dim strToParse As String
Dim arrParsed
strToParse = DLookup("[FieldName]","TableName") 'this is the table that holds your string.
arrParsed = Split(strToParse, "|")
Set rst = CurrentDb.OpenRecordset("NameOfTable") 'this is the table to store the 5 fields.
rst.AddNew
For i = 0 To 4
rst(i).Value = arrParsed(i)
Next
rst.Update
rst.Close
Set rst = Nothing
End Sub
Active today
In a query you can have an expression to retrieve each value/item:
value1: GetFullTextItem([FullText]
value2: GetFullTextItem([FullText]
value3: GetFullTextItem([FullText]
value4: GetFullTextItem([FullText]
value5: GetFullTextItem([FullText]
using this function:
Public Function GetFullTextItem( _
ByVal strFullText As String, _
ByVal intItem As Integer) As String
On Error Resume Next
GetFullTextItem = Split(strFullText, "|")(intItem)
End Function
/gustav
value1: GetFullTextItem([FullText]
value2: GetFullTextItem([FullText]
value3: GetFullTextItem([FullText]
value4: GetFullTextItem([FullText]
value5: GetFullTextItem([FullText]
using this function:
Public Function GetFullTextItem( _
ByVal strFullText As String, _
ByVal intItem As Integer) As String
On Error Resume Next
GetFullTextItem = Split(strFullText, "|")(intItem)
End Function
/gustav
I awarded this as the solution of choice because it was the most elegant solution of the two with the least amount of code and I could perform both concatenate and parse steps in the same query. However, I said I was a novice and your solution left me having to do additional research on how to create functions and call them from my query and I had to find out how to replace the [FullText] to get this to work. I know that's just my being a newbie, but you could have easily added some additional help to your solution.
Nevertheless, I could not have gotten past this without you. Thank you!
Nevertheless, I could not have gotten past this without you. Thank you!
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