Function dfq_str_empty 

pub fn dfq_str_empty() -> Arc<LengthRule>

Creates a rule that checks if a string column is empty (length = 0).

Examples

use datafusion_quality::rules::column::dfq_str_empty;
use datafusion_quality::RuleSet;

// Create a rule to check if name is empty
let rule = dfq_str_empty();
let mut ruleset = RuleSet::new();
ruleset.with_column_rule("name", rule);