numeric-with-precision (TP016)

Automatic fix is available.

What it does

Checks for usage of numeric with precision.

Why not?

Because it rounds off the fractional part which can lead to rounding errors slipping in when performing calculations and storing partial results before aggregation. An example of what could go wrong is how-to-prevent-postgresql-from-automatically-rounding-numeric-types

When should you?

When you want to, really. If what you want is a numeric field that will throw an error when you insert too large a value into it, and you do not want to use an explicit check constraint and you always want to store the fractional part in a specific decimal places then numeric(p, s) is a perfectly good type. Just don't use it automatically without thinking about it.

Use instead:

numeric.