The Netflix sample database is a learning database based on public data from Netflix’s Engagement Report and Global Top 10 lists. This guide walks you through installing it on PostgreSQL.
For more background on this database, see my introduction to the Netflix Sample Database.
There are several ways that we can list all indexes in PostgreSQL. These include utilizing various system catalog views and psql commands. Below are five options for returning a list of indexes in PostgreSQL, along with examples of how to filter the results by index name, table name, and other criteria.
The \di command can be used to list indexes in the current database when using psql (PostgreSQL’s command-line tool). This meta-command can display all indexes, or just indexes that match certain patterns. Here’s an in-depth explanation of how \di works, its options, and examples of its various uses.
When we use psql to write SQL queries in PostgreSQL, we’ll usually see the results presented as a table, with columns displayed vertically and rows running horizontally. But it is possible to change this so that the columns are displayed horizontally and the rows run vertically.
This can be useful for when the number of columns causes the results to be wider than our psql display, and may cause the rows to wrap to the next line.
Here are five ways we can change the display to vertical output, otherwise known as expanded display.
In PostgreSQL, we can use the + operator to add one or more minutes to a time value.
By “time” value, this could be an actual time value, a timestamp, or an interval. We can also add minutes to a date value or a date and time combination.
In PostgreSQL, we can use the - operator to subtract one or more seconds from a time value.
By “time” value, this could be an actual time value, a timestamp, or an interval. We can also subtract seconds from a date value or a date and time combination.
In PostgreSQL, we can use the + operator to add one or more seconds to a time value.
By “time” value, this could be an actual time value, a timestamp, or an interval. We can also add seconds to a date value or a date and time combination.
