Function columns

datafusion/core/src/test/mod.rs:215–217

Returns the column names on the schema

(schema: &Schema)

/// Returns the column names on the schema
pub fn columns(schema: &Schema) -> Vec<String> {
    schema.fields().iter().map(|f| f.name().clone()).collect()
}

/// Return a new table provider that has a single Int32 column with
/// values between `seq_start` and `seq_end`