Create a computing field CONCAT in MySQL

When I read the Mysql manual again today, I see a function concatenation field that is ignored at ordinary times. In fact, it is simple to use mysql functions to process strings. Calculated fields are usually compared.

When I read the Mysql manual again today, I see a function concatenation field that is ignored at ordinary times. In fact, it is simple to use mysql functions to process strings. Calculated fields are usually compared.

When I read the Mysql manual again today, I see a function concatenation field that is ignored at ordinary times. In fact, it is simple to use mysql functions to process strings. Calculated fields are usually used, but the concatenated fields are ignored.

A field (filed) basically has the same meaning as a column and is often used interchangeably. However, a database column is generally a column, and a term field is usually connected to a calculated field.

Table Structure:

) ENGINE = InnoDB AUTO_INCREMENT = 956DEFAULTCHARSET = utf8'

The table contains certain data.

Now I want to extract the author of the field name from the database and then use the name (author) as a Field Layout. Then I can extract the name from the database and splice it with languages, however, mysql functions can be directly spliced here.

Returned data 'Wolf (Liu yongsheng )'

This is the case. The processing in mysql is still relatively fast.

I won't bother here with arithmetic calculation.