Mysql greatest date

Then you could use this, if you want NULL dates be not counted in the. COALESCE your date columns before you use them in GREATEST. Do the MySQL GREATEST () and LEAST. MySQL greatest () function returns the greatest of the given.

I have a table with DATETIME columns, create_date and modify_date. I want to SELECT the GREATEST of the columns. DATE , cast the string to a DATE. This tutorial shows you how to use the MySQL GREATEST and LEAST functions to find the maximum and minimum values of two or more fields respectively.

The GREATEST () function returns the greatest value of the list of arguments. Note: See also the LEAST() function. They both return the maximum value from a range of . Therefore, if it is plausible for an argument to be NULL, we need to use . In mysql comparisons if any of the entries are null, then the result is null.

These can be a little confusing, and there is a little overlap between several of them. What is the best or most efficient way to compare a mix of DATETIME and TIMESTAMP values using GREATEST ()? Why does MySql least and greatest functions return null if any of the.

Aggregate Functions Part 1: COUNT() — With examples in MySQL. SQLite, Oracle, and MySQL : If any expression is null , Greatest will return null. This MySQL tutorial explains how to use the MySQL GREATEST function with syntax and examples.

The MySQL GREATEST function returns the greatest value. With a list of comma separated values in the argument, GREATEST () returns the. Range conditions like greater (), less () and BETWEEN have special index requirements. The scan starts at the first date and ends at the second.

The appendix explains how to recognize access predicates in MySQL , SQL Server and . The LAST_DAY() function in MySQL can be used to know the last day of the month for a given date or a datetime. MySQL provides three types of functions that allow you to compare and convert data. Two functions that are useful for comparing values are the GREATEST () and. This article will show you a simple query example in MySQL 5. Building High-Performance Web Applications in MySQL Guy Harrison, Steven. There are many nitty gritty details when working with PHPs DateTime instances.

You have to know their inner workings pretty well not to make mistakes with date. Summary of MySQL Commands Used in this Tutorial 2. Working with Date and Time. For detailed syntax, check MySQL manual SQL Statement Syntax.

This helps the MySQL parser distinguish between function calls and references. MAX sql command will return the record with maximum or highest value in the SQL table. We can get Maximum value from a date field like this.

In MySQL versions prior to 3. Here are some of the numeric functions MySQL has, excluding. In the usage examples, dt could represent a date , a time, or a datetime. MAX () instead of GREATEST.