substring(str, pos[, len]) – Returns the substring of `str` that starts at `pos` and is
struct(col1, col2, col3, …) – Creates a struct with the given field values. Platforms: WhereOS,
string(expr) – Casts the value `expr` to the target data type `string`. Platforms: WhereOS, Spark,
subarray(array values, int offset [, int length]) – Slices the given array by the given
subarray_endwith(array original, int|text key) – Returns an array that ends with the specified key SELECT
stddev_samp(expr) – Returns the sample standard deviation calculated from values of a group. Platforms: WhereOS,