Function datafusion::functions::unicode::left::left

source · 
pub fn left<T>(
    args: &[Arc<dyn Array>]
) -> Result<Arc<dyn Array>, DataFusionError>
where
    T: OffsetSizeTrait,
Expand description

Returns first n characters in the string, or when n is negative, returns all but last |n| characters. left(‘abcde’, 2) = ‘ab’ The implementation uses UTF-8 code points as characters