How do I find the first day of previous/next week with SQL?

I saw your article the other day on getting the first date of the current week.. But what if I wanted to get the first date of the previous week? Or the first date of next week? As you've already guessed, the SQL syntax for getting the first day of the current week will require …

How do I find the first day of the current week with SQL?

Have you ever had to do weekly/monthly reporting based on SQL data retrieval? It would be pretty neat if you could get the start date of the current week/month dynamically, no? Well, there's a very straightforward way if you're using Vertica or PostgreSQL - just employ the date_trunc('period', timestamp) function. Other databases (e.g. SQL Server,  MySQL) …

How do I convert a timestamp to another timezone with SQL?

Have you ever had that request? I would like to have the distribution of clicks per hour for the last week in local time It's a no brainer if your database server is in the same time zone as your business audience  - then you just need to aggreate the clicks' timestamps to an hour. Not …