Update regular replacement sql statement in mysql
This article mainly introduces "update regular replacement sql sentence in mysql". In daily operation, I believe that many people have doubts about the problem of update regular replacement sql sentence in mysql. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubt of "update regular replacement sql sentence in mysql". Next, please follow the editor to study!
The following update statement executes replacing test in www.test.com with abc
Program code
Example:
Update test SET url= REPLACE ('www.test.com','test',' abc') Where url REGEXP www.test.com
If there is something similar in the record
Www.test.com
Www.test1.com
Www.test2.com
To turn these records into www.abc.com, execute the sql statement as follows
Update test SET url= REPLACE ('www.test.com','test',' abc') Where url REGEXP'^ (www.test)'
Regularization is very flexible, but there are very complex situations, regularization is not necessarily more efficient than other methods, you don't have to cling to a tree, and sometimes you may learn more by trying new methods.
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