Function datafusion::physical_expr::regex_expressions::regexp_match

pub fn regexp_match<T>(
    args: &[Arc<dyn Array>]
) -> Result<Arc<dyn Array>, DataFusionError>
where
    T: OffsetSizeTrait,

Extract a specific group from a string column, using a regular expression.

The full list of supported features and syntax can be found at https://docs.rs/regex/latest/regex/#syntax

Supported flags can be found at https://docs.rs/regex/latest/regex/#grouping-and-flags

Examples

let ctx = SessionContext::new();
let df = ctx.read_csv("tests/data/regex.csv", CsvReadOptions::new()).await?;

// use  the regexp_match function to test col 'values',
// against patterns in col 'patterns' without flags
let df = df.with_column(
    "a",
    regexp_match(vec![col("values"), col("patterns")])
)?;
// use the regexp_match function to test col 'values',
// against patterns in col 'patterns' with flags
let df = df.with_column(
    "b",
    regexp_match(vec![col("values"), col("patterns"), col("flags")]),
)?;

// literals can be used as well with dataframe calls
let df = df.with_column(
    "c",
    regexp_match(vec![lit("foobarbequebaz"), lit("(bar)(beque)")]),
)?;

df.show().await?;