Here are two ways to concatenate strings and numbers in MariaDB:
- Use the
CONCAT()function, which concatenates its arguments. - Use the pipe concatenation operator (
||), which concatenates its operands.
Below are examples of each.
Relational
Format Numbers with a Comma in SQLite
SQLite has a printf() function or format() function that allows us to format numbers according to a format string.
As from SQLite 3.18.0, it accepts a comma flag, which enables us to have comma separators at the thousands marks for integers.
Further work can be done to get it working with real/floating point numbers.
Date & Time Units in MySQL (Full List)
Here’s a list of units that can be used in MySQL datetime and interval functions.
Concatenate a String and a Number in MySQL
There are a couple of approaches we can use to concatenate strings and numbers in MySQL.
- We can use the
CONCAT()function, which concatenates its arguments. - We can use the pipe concatenation operator (
||), which concatenates its operands.
Below are examples of each.
7 Options for Enabling Pipes (||) as the Concatenation Operator in MariaDB
By default, two pipe characters (||) are treated as a logical OR operator in MariaDB. However, you can change this behaviour if you like.
You can update your sql_mode to include the PIPES_AS_CONCAT option, in which case two pipes will be treated as a concatenation operator.
There are quite a few ways to add this option to your sql_mode. You can add it explicitly. Or you can set your sql_mode to an option that sets it implicitly.
I run through these options below.
How to Extract the Day, Month, and Year from a Date in SQLite
In SQLite, we can use the strftime() function to return datetime values in our chosen format.
Therefore, we can use it to extract the day, month, and year from a date.
How to Enable the Pipe Concatenation Operator in MySQL
MySQL supports the use of the pipe concatenation operator (||) for concatenating its operands. However, you need to enable it first.