Function dfq_null 

pub fn dfq_null() -> Arc<NullRule>

Creates a rule that checks if values in a column are null.

Arguments

• column_name - The name of the column to check

Examples

use datafusion_quality::rules::column::dfq_null;
use datafusion_quality::RuleSet;

// Create a rule to check if age column is null
let rule = dfq_null();
let mut ruleset = RuleSet::new();
ruleset.with_column_rule("age", rule);