sql like escape

Ext.: http://blog.chinaunix.net/uid-26896647-id-3433968.htmlQuestion Description: If there are special characters such as ' & ', ' _ ', '% ' on a field in a table, and we have to use these special characters in the Where condition?1. Create a table

 SQL Server: SQL like wildcard special usage: Escape   %: Match zero or multiple arbitrary characters; _: match any single character; []: match a range; [^]: exclude a range   symbol meaning like '5 [%] '

%: matches 0 or more arbitrary characters; _: matches any single character; []: Matches a range; [^]: excludes a range;-: hyphenSymbol meaningLike ' 5[%] ' 5%Like ' [_]n ' _nLike ' [A-CDF] ' A, B, C, D, or FLike ' [-ACDF] '-, A, C, D, or FLike ' [[]

One, wildcard charactersWildcard Description Example %: Matches any string that contains 0 or more characters。 The WHERE title like '%computer% ' will find all titles that contain the word computer anywhere in the title._ (Underscore): Match any

One, wildcard charactersWildcard Description Example%: Matches any string that contains 0 or more characters。 The WHERE title like '%computer% ' will find all titles that contain the word computer anywhere in the title._ (Underline): Matchany single

If you want to query in SQL like with an underscore ' _ ' or a '% ' equivalent of a record, write directly to like ' xxx_xx ', then ' _ ' will be treated as a wildcard character like. The escape clause is provided in SQL to handle this situation,

It is well known that the LIKE operator in T-SQL uses a% symbol to denote wildcards. Most of the time, you may need to query for data that contains a percentage, such as Querying the field coupon contains 5% of the data. So how do you use a like

Search for fields Search for fields Find '%' in the field, which involves the escape characters of Oracle. The following is a summary: SQL> select * from test; TEST--------------------Sdd_kkD 'dDfsfsaDffa % asfs123451% 23451% 543212% 54321%

Use ESCAPE to define escape characters in SQL. Use ESCAPE to define ESCAPE characters When the LIKE keyword is used for fuzzy search, "%", "_", and "[]" appear separately, and are considered as wildcards. To check whether there are percent (%),

Tagged with: MySQL like escape percent semicolon wildcardWildcard characters in the like statement for MySQL: percent, underscore, and escape% represent any number of characters in SQL code Http://blog.csdn.net/yc7369/select * from user where