Not Null Check

The Not Null Check rule verifies that specified columns contain the required number of non-null values.
This rule is commonly used to:

• Ensure mandatory fields like customer names or product prices are populated
• Validate data completeness in critical reporting fields
• Detect missing values in essential business columns

Example Usage:

• Confirm that all customer records have Email addresses
• Check that at least 95% of ProductCode entries are not null

Configuration Fields

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Success Criteria Configuration

This section defines how the rule’s outcome is measured against expected thresholds.

Field Name	Description	Required	Options / Format
Operator	Comparison operation for non-null value count	Yes	GreaterThan, LessThan, EqualTo, Between
Threshold Value	Value for comparison (single value for most operators)	Conditional	Number
Threshold Min	Minimum value (for Between operator)	Conditional	Number
Threshold Max	Maximum value (for Between operator)	Conditional	Number
Is Percentage	Whether the threshold represents a percentage of total rows	No	true / false (default: false)

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Sample Input Data

ID	Name	Age	Email
1	Alice	25	alice@example.com
2	Bob	30	bob@example.com
3	Charlie	NULL	charlie@example.com
4	David	NULL	NULL
5	NULL	NULL	erin@example.com

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Sample Configurations

Example 1: Absolute Count Check

Configuration Field	Value
Column	Name
Operator	EqualTo
Threshold Value	4
Is Percentage	false

Explanation:
Validates that exactly 4 Name values are non-null.

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Example 2: Percentage Range Check

Configuration Field	Value
Column	Email
Operator	Between
Threshold Min	70
Threshold Max	100
Is Percentage	true

Explanation:
Validates that between 70% and 100% of Email values are non-null.

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Sample Output

Column Name	Rule Name	Success Count	Failure Count	Within Threshold
Name	Not Null Check	4	1	Yes
Age	Not Null Check	2	3	No
Email	Not Null Check	3	2	No

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