How to select only date from a DATETIME field in MySQL?

Question

I have a table in the MySQL database that is set up with DATETIME. I need to SELECT in this table only by DATE and excluding the time.

How d

Answer 1

if time column is on timestamp , you will get date value from that timestamp using this query

SELECT DATE(FROM_UNIXTIME(time)) from table 

Answer 2

I solve this in my VB app with a simple tiny function (one line). Code taken out of a production app. The function looks like this:

Public Function MySQLDateTimeVar(inDate As Date, inTime As String) As String
Return "'" & inDate.ToString(format:="yyyy'-'MM'-'dd") & " " & inTime & "'"
End Function

Usage: Let's say I have DateTimePicker1 and DateTimePicker2 and the user must define a start date and an end date. No matter if the dates are the same. I need to query a DATETIME field using only the DATE. My query string is easily built like this:

Dim QueryString As String = "Select * From SOMETABLE Where SOMEDATETIMEFIELD BETWEEN " & MySQLDateTimeVar(DateTimePicker1.Value,"00:00:00") & " AND " & MySQLDateTimeVar(DateTimePicker2.Value,"23:59:59")

The function generates the correct MySQL DATETIME syntax for DATETIME fields in the query and the query returns all records on that DATE (or BETWEEN the DATES) correctly.

Answer 3

Yo can try this:

SELECT CURDATE();

If you check the following:

SELECT NOW(); SELECT DATE(NOW()); SELECT DATE_FORMAT(NOW(),'%Y-%m-%d');

You can see that it takes a long time.

Answer 4

Simply You can do

SELECT DATE(date_field) AS date_field FROM table_name