SQL Server Truncating Message with '...'
Q
What is the best way in SQL Server to truncate a string to 140 characters and add "..." to the end if there are more than 140 characters in the string? I need this to display initial parts of user comments on my home page.
✍: FYIcenter
A
Basically, you are asking the logic to be implemented in a SQL Server query,
If the string has more than 140 characters, Return the first 140 characters with "..." added to the end Else Return the string as is
A straightforward solution is the following:
SELECT CASE WHEN LEN(input)>140 THEN SUBSTRING(input,1,140)+'...' ELSE input END;
But the following solution should have a better performance:
SELECT SUBSTRING(input,1,140) + REPLACE(REPLACE(CAST(
PATINDEX('%_%',SUBSTRING(input,140,999999))
AS NVARCHAR(MAX)),'0',''),'1','...');
Of course, when SQL Server supports Regular Expression, we will have a much better solution.
2015-09-16, 967👍, 0💬
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