We can use the - operator to subtract one or more weeks from a date in PostgreSQL.
Tag: dates
Return the First Monday of Each Month in SQLite
We can use SQLite’s DATE() function to return the first Monday of each month for a given year, based on the date we provide.
But it’s not limited to Monday. We can also get the first Tuesday, Wednesday, Thursday, Friday, etc of each month.
Continue readingGet the Last Day of the Month in PostgreSQL
We can use the following technique in PostgreSQL to return the last day of a given month.
This could be the last day of the current month, or the last day of the month based on a date that we specify.
Continue readingHow to Get the Number of Days in a Month in MySQL
Check out the following technique in MySQL if you need to find out how many days are in a month based on a given date.
Continue readingConvert a Unix Timestamp to a Date Value in Oracle
In Oracle Database, we can use the following technique to return a date from a Unix timestamp value.
The Unix timestamp (also known as Unix Epoch time, Unix time, or POSIX time) is the number of seconds that have elapsed since 00:00:00 Thursday, 1 January 1970, Coordinated Universal Time (UTC).
Continue readingSubtract Months from a Date in PostgreSQL
In PostgreSQL, we can use the - operator to subtract one or more months from a date.
Get the First, Second, Third, or Fourth Monday of a Month in SQLite
We can use SQLite’s DATE() function to perform calculations on a given date. One of the things we can do is return the first, second, third, or fourth instance of a given day within a given month.
How to Get the End of the Month in MariaDB
In MariaDB, we can use the LAST_DAY() function to return the last day of a given month.
This could be the last day of the current month, or the last day of the month based on a date that we specify.
Continue readingHow to Return the Unix Timestamp in Oracle
Here’s an option for returning the Unix timestamp when using Oracle Database.
The Unix timestamp (also known as Unix Epoch time, Unix time, or POSIX time) is the number of seconds that have elapsed since 00:00:00 Thursday, 1 January 1970, Coordinated Universal Time (UTC).
Continue readingHow to Convert a Unix Timestamp to a Date/Time Value in SQL Server
In SQL Server, we can use the following method to return a date and time based on a given Unix timestamp.
The Unix timestamp (also known as Unix Epoch time, Unix time, or POSIX time) is the number of seconds that have elapsed since 00:00:00 Thursday, 1 January 1970, Coordinated Universal Time (UTC).
Continue reading