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How do I escape the underscore character?
I am writing something like the following where clause and want to be able to find actual entries with _d at the end.
Where Username Like '%_d' 
578
I want to write a query to display all the row which contains an (_) underscore. The escape character makes SQL treat whatever follows it as a literal character. Put square-brackets around the underscore in the Like statement.
To broaden the selections of a structured query language (SQL-SELECT) statement, two wildcard characters, the percent sign (%) and the underscore (_), can be used.
Use braces to escape a string of characters or symbols. Everything within a set of braces in considered part of the escape sequence. When you use braces to escape a single character, the escaped character becomes a separate token in the query. Use the backslash character to escape a single character or symbol.
If you are searching for an underscore then escape it with a '\' so you would search for' \_'. When matching SQL patterns, you can use these symbols as placeholders: % (percent) to substitute for zero or more characters, or _ (underscore) to substitute for one single character.
T-SQL Reference for LIKE:
You can use the wildcard pattern matching characters as literal characters. To use a wildcard character as a literal character, enclose the wildcard character in brackets. The following table shows several examples of using the LIKE keyword and the [ ] wildcard characters.
For your case:
... LIKE '%[_]d' If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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