Fuzzy search escape in SQL

When you want to query special characters such as _ and %, use escape

Select ename from EMP where ename like '% S _ % 'escape s ';

We do not want to search for employees who must have more than one character after S, but remove S. S is used to escape and escape _. Here _ is not a wildcard, but actually _.

Select ename from EMP where ename like '%/_ %' escape '/';

In general, we use a slash (/) to escape, so as to avoid any difference.

1. Use the escape keyword to define the escape character. In mode, when an escape character is placed before a wildcard, the wildcard is interpreted as a common character. For example, to search for a string containing string 5% at any position, use: Where Columna like '% 5/%' escape '/'

2. Escape 'escape _ character 'allows you to search for wildcards in strings rather than using them as wildcards. Escape_character is a character that represents this special purpose before a wildcard. Select * From finances where description like 'gs _ 'escape's' means: for example, if you want to search for a string "g _", then, "_" is used as a wildcard rather than a character. As a result, we will find "Ga", "GB", "GC", rather than "g _". use like 'gs _ 'escape's S' to indicate special usage flag