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Hi, I have a Power BI report to list all the queries that are ran as part of query auduting and I have a column that contains a query.
In order to simplify the data I need to split (extract) the table name from the query string I have.
Please help me with the DAX for this.
Sample query is :
SELECT
AST.SERIALNUMBER,
AST.PRODUCTID,
EOSL = max(EOL.NEXTENDOFLIFEMILESTONEDATE)
FROM [HSTG].[HSTG_ASSETS] AST
INNER JOIN [HSTG].[HSTG_HARDWARE_END_OF_LIFE] EOL ON AST.DEVICEID = EOL.DEVICEID
WHERE NEXTENDOFLIF
From the above I need to display FROM table names like '[HSTG].[HSTG_ASSETS]' & [HSTG].[HSTG_HARDWARE_END_OF_LIFE]
Please help
Hi @AnjanaPothineni ,
I would do this in Power Query.
Frist split the query string by space. This will create column containing a list of text strings.
Next is to select which of the text strings begings with [ and ends with ].
Lastly, you can either expand the list as new rows or be concatenated in a single cell.
Paste this code into a blank query. I split the logic into several applied steps/column so it is easier to understand.
let
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("VY5BCsIwEEWvMnSlILmBi9j82kiakUyqQhOCBzBrj2+qCLoa/vDnzVuWTuDQx1S1RCUIVjs/TweE3Wd1DmzmPlrTMlgc7elxf27ATnncIrzhwdkBk3WQyB5GR2xTHQJPtIwSj1m9R9EiiJKpUVO13iPQia3/L406mKsOKA1ceCgrOlP7RuzXS2VwsT2saR6rwzemeh0RQL9OqaZKXc4v", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Sample query" = _t]),
#"Changed Type" = Table.TransformColumnTypes(Source,{{"Sample query", type text}}),
#"Added Custom" = Table.AddColumn(#"Changed Type", "Split by Space", each Text.Split ( [Sample query], " " )),
#"Added Custom1" = Table.AddColumn(#"Added Custom", "Select Start and Square Brackets", each List.Select([Split by Space], each Text.StartsWith(_, "[") and Text.EndsWith(_, "]") )),
#"Expanded Select Start and Square Brackets" = Table.ExpandListColumn(#"Added Custom1", "Select Start and Square Brackets"),
#"Removed Columns" = Table.RemoveColumns(#"Expanded Select Start and Square Brackets",{"Split by Space"}),
#"Changed Type1" = Table.TransformColumnTypes(#"Removed Columns",{{"Select Start and Square Brackets", type text}})
in
#"Changed Type1"
You can try using this for achieving your desired output.
TableNames =
VAR StartIndex = FIND("[", 'YourTable'[Query], 1)
VAR EndIndex = FIND("]", 'YourTable'[Query], StartIndex)
RETURN
MID('YourTable'[Query], StartIndex, EndIndex - StartIndex + 1)
Hope this will helo you.
Thanks for quick reply. Logic seems to work but my query has all sorts of table referecing is tere like sometimes they used schema with table name with[] and in some its a query with just table name etc. I will refine it further and apply this logic there.
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