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stddev_samp(expr) – Returns the sample standard deviation calculated from values of a group. Platforms: WhereOS,

std(expr) – Returns the sample standard deviation calculated from values of a group. Platforms: WhereOS,

sst(double|array x [, const string options]) – Returns change-point scores and decisions using Singular Spectrum

stack(n, expr1, …, exprk) – Separates `expr1`, …, `exprk` into `n` rows. Platforms: WhereOS, Spark,

stddev(expr) – Returns the sample standard deviation calculated from values of a group. Platforms: WhereOS,

split_words(string query [, string regex]) – Returns an array containing splitted strings Platforms: WhereOS, Spark,