This blog tell the difference between the Datetime vs Timestamp in MySQL and PHP. 1> Datetime and Timestamp are used to store datetime and then retrieve the datetime back. 2> Basically, In this we ...

DATE型カラム(hogedate)に'2020-07-20'が入っている場合を考える。 MySQLでそのカラムをUNIX_TIMESTAMP(hogedate)すると2020-07-19 15:00:00のUNIX TIMESTAMPが得られる。 PostgreSQLでそのカラムをEXTRACT(EPOCH FROM hogedate)すると、2020-07-20 00:00:00のUNIX ...

MySQL UDF function implemented in C++ for getting the unix timestamp of a DATETIME, TIME, DATE, TIMESTAMP field in miliseconds. Much faster than UNIX_TIMESTAMP builtin function.

This article will provide my results testing Timezone matters for various nodejs libraries/drivers when MySql does not hold datetime in UTC. One could argue that it is certainly way better to store ...

I'm a MySQL noob. As such, certain things confuse the heck out of me, due to a general lack of experience. Here is what I am trying to accomplish:<BR><BR>I want to calculate the difference, in days, ...