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
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
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
Not only does Spring provide a full-featured application development framework, but it also has a number of tool classes that you can use directly when you write a program, not only in spring applications but also in other applications, most of
Keywords: spring's excellent tool class inventory, special character escape and method entry Detection Tool class
Not only does Spring provide a full-featured application development framework, but it also has a number of tool classes that you can
Special character escape
Because WEB applications need to be federated to multiple languages, each containing some special characters, for dynamic or tabbed languages, a problem that we often encounter when we need to dynamically construct the
Not only does Spring provide a full-featured application development framework, but it also has a number of tool classes that you can use directly when you write a program, not only in spring applications but also in other applications, most of
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 (%),
For example, in a data table there is a field called
orderis specifically used for sorting, and my statement may have to be written like this.
$sth = $pdo->prepare (' SELECT * FROM table_name ORDER by order ASC '); $sth->execute ();
But because
For example, if an order field exists in a data table and is used for sorting, my statement may need to write {code...} like this ...} however, because order itself is a keyword, the syntax error will be reported during execution. I know that the
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.