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POT-SQL LIKE condition on comma-separated list
 

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  1. POT-SQL LIKE condition on comma-separated list
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    <p>Is it possible to write a <code>LIKE</code> condition in T-SQL to match a comma-separated list which includes wildcards to a string. Let me explain further with an example:</p> <p>Say you have the following command separated list of urls in a field:</p> <pre><code>'/, /news/%, /about/' </code></pre> <p>Now here's some examples of strings I'd like to match with the string above:</p> <ol> <li>'/'</li> <li>'/news/'</li> <li>'/news/2/'</li> <li>'/about/'</li> </ol> <p>And here's some strings which would not match:</p> <ol> <li>'/contact/'</li> <li>'/about/me/'</li> </ol> <p>I've achieved this in the past by writing a split function and then doing a like on each one. However I'm trying to get my query to work in SQL Server CE which doesn't support functions.</p> <p>In case you are wondering here's how I achieved it using the split function:</p> <pre><code>SELECT Widgets.Id FROM Widgets WHERE (SELECT COUNT(*) FROM [dbo].[Split](Urls, ',') WHERE @Input LIKE Data) &gt; 0 </code></pre> <p>And here's the split function:</p> <pre><code>CREATE FUNCTION [dbo].[Split] ( @RowData NVARCHAR(MAX), @Separator NVARCHAR(MAX) ) RETURNS @RtnValue TABLE ( [Id] INT IDENTITY(1,1), [Data] NVARCHAR(MAX) ) AS BEGIN DECLARE @Iterator INT SET @Iterator = 1 DECLARE @FoundIndex INT SET @FoundIndex = CHARINDEX(@Separator, @RowData) WHILE (@FoundIndex &gt; 0) BEGIN INSERT INTO @RtnValue ([Data]) SELECT Data = LTRIM(RTRIM(SUBSTRING(@RowData, 1, @FoundIndex - 1))) SET @RowData = SUBSTRING(@RowData, @FoundIndex + DATALENGTH(@Separator) / 2, LEN(@RowData)) SET @Iterator = @Iterator + 1 SET @FoundIndex = CHARINDEX(@Separator, @RowData) END INSERT INTO @RtnValue ([Data]) SELECT Data = LTRIM(RTRIM(@RowData)) RETURN END </code></pre> <p>I'd appreciate it if someone could help. Thanks</p>
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    1. USmarc_s
    1. USnfplee
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    1. COThe answer to your question is "no". You might investigate regular expressions. Alternatively, if you keep your "comma separated list" as a separate table with one item per row, then you could use like with a join.
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      1. USGordon Linoff
 

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