mysql replace into

MySQL Replace instance description:UPDATE tb1 SET f1=replace (F1, ' abc ', ' Def ');REPLACE (STR,FROM_STR,TO_STR)All occurrences of the string from_str in the string str are replaced by TO_STR, and then the string is returnedThis function is useful

MySQL replace into and on duplicate key update test notesMysql> CREATE TABLE tbl_insert_tmp (ID int (5), Addr_number Int (ten), name varchar, primary key (ID), unique key Udx_add R_number (Addr_number));Query OK, 0 rows affected (0.05 sec)Mysql>

Replace, concat, and cast character string functions in mysql need to export a personal information of job-seeking users. This information requires three-table joint query requirements: birthdate format: 1990.01.02 Database: Gender display: men and

Original link: http://www.jb51.net/article/47090.htm Today listen to colleagues about Oracle to MySQL data migration, he used insert into ... on duplicate key Update ..., I was thinking how not to replace it, so I came back to look carefully, they

MySQL has a lot of extensions for SQL, some of which are handy, but there are performance issues with some of them being misused, and there are some unintended side effects, like REPLACE into.For example, there is a table: 12345678

Replace and regexp usage0 Comments | This entry was posted on Apr 08 2010. Mysql replace usage 1. replace Replace into table (id, name) values ('1', 'A'), ('2', 'bb ') This statement inserts two records into the table. If the primary key id is 1 or 2

When inserting data into a table, we often encounter situations such as: 1, first to determine whether the data exists, 2, if it does not exist, then insert; 3, if present, update. This can be handled in SQL Server:If not exists (select 1 from t

MySQL "replace into", mysqlreplaceinto MySQL has many extensions for SQL, some of which are very convenient to use, but some may have performance problems after misuse, and some unexpected side effects, such as REPLACE. For example, there is a table:

Use of Replace and regexp0 Comments | This entry is posted on APR 08 2010 MySQL Replace usage 1.replace into Replace into table (Id,name) VALUES (' 1′, ' AA '), (' 2′, ' BB ') The purpose of this statement is to insert two records into table tables.

from:http://blog.xupeng.me/2013/10/11/mysql-replace-into-trap/MySQL has a lot of extensions for SQL, some of which are handy, but there are performance issues with some of them being misused, and there are some unintended side effects, like REPLACE