如何从mysql表中检索没有默认值的值

Question

I want to get the values in the mysql table which are not default values. is there any way to use only sql query without using php?

Answer 1

Use DEFAULT(col_name) .

eg

SELECT *
FROM table
WHERE col1 != DEFAULT(col1)

If you want all rows where at least one column is not the default use OR :

SELECT *
FROM table
WHERE col1 != DEFAULT(col1)
OR   col2 != DEFAULT(col2) # etc etc...

Or if you want all rows where all the columns are not the default use AND .