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Domingo, 29 Mayo 2022 11:19

Wildcard Characters in SQL Server

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Wildcard Characters in SQL Server

SymbolDescriptionExample
% Represents zero or more characters bl% finds bl, black, blue, and blob
_ Represents a single character h_t finds hot, hat, and hit
[] Represents any single character within the brackets h[oa]t finds hot and hat, but not hit
^ Represents any character not in the brackets h[^oa]t finds hit, but not hot and hat
- Represents a range of characters c[a-b]t finds cat and cbt

 

Here are some examples showing different LIKE operators with '%' and '_' wildcards:

LIKE OperatorDescription
WHERE CustomerName LIKE 'a%' Finds any values that starts with "a"
WHERE CustomerName LIKE '%a' Finds any values that ends with "a"
WHERE CustomerName LIKE '%or%' Finds any values that have "or" in any position
WHERE CustomerName LIKE '_r%' Finds any values that have "r" in the second position
WHERE CustomerName LIKE 'a__%' Finds any values that starts with "a" and are at least 3 characters in length
WHERE ContactName LIKE 'a%o' Finds any values that starts with "a" and ends with "o"

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