random_float

Generate a random float within the provided interval.

Parameters

Name	Description	Default	Required	Supported DB types
column	The name of the column to be affected		Yes	float4, float8
min	The minimum threshold for the random value. The value range depends on the column type.		Yes	-
max	The maximum threshold for the random value. The value range depends on the column type.		Yes	-
decimal	The decimal of the random float value (number of digits after the decimal point)	4	No	-
keep_null	Indicates whether NULL values should be replaced with transformed values or not	true	No	-
engine	The engine used for generating the values [random, hash]. Use hash for deterministic generation	random	No	-

Dynamic parameters

Parameter	Supported types
min	float4, float8
max	float4, float8

Description

The RandomFloat transformer generates a random float value within the provided interval, starting from min to max, with the option to specify the number of decimal digits by using the decimal parameter. The behaviour for NULL values can be configured using the keep_null parameter.

The engine parameter allows you to choose between random and hash engines for generating values. Read more about the engines in the Transformation engines section.

Example: Generate random price

In this example, the RandomFloat transformer generates random prices in the range from 0.1 to 7000 while maintaining a decimal of up to 2 digits.

RandomFloat transformer example

- schema: "sales"
  name: "salesorderdetail"
  columns_type_override:  # (1)
    "unitprice": "float8"
  transformers:
    - name: "RandomFloat"
      params:
        column: "unitprice"
        min: 0.1
        max: 7000
        decimal: 2

1. The type overrides applied for example because the playground database does not contain any tables with float columns.

Result:

Column	OriginalValue	TransformedValue
unitprice	2024.994	4449.7