MySQL: Convert INT to DATETIME

Question

I have a UNIX-type timestamp stored in an INT column in MySQL. What is the proper way to retrieve this as a MySQL DATETIME?

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Answer 1

SELECT  FROM_UNIXTIME(mycolumn)
FROM    mytable

Answer 2

select from_unixtime(column,'%Y-%m-%d') from myTable; 

Answer 3

FROM_UNIXTIME()

Answer 4

The function STR_TO_DATE(COLUMN, '%input_format') can do it, you only have to specify the input format. Example : to convert p052011

SELECT STR_TO_DATE('p052011','p%m%Y') FROM your_table;

The result : 2011-05-00