Function duckdb_value_varchar_internal 

pub unsafe extern "C" fn duckdb_value_varchar_internal(
    result: *mut duckdb_result,
    col: idx_t,
    row: idx_t,
) -> *mut c_char

DEPRECATION NOTICE: This method is scheduled for removal in a future release.

history:

• stable: v0.2.9
• deprecated: v1.0.0

@param result @param col @param row @return char*