Module greptime_builtin

GrepTime User Define Function module

allow Python Coprocessor Function to use already implemented udf functions from datafusion and GrepTime DB itself

Structs

• PyDataFrame

Constants

• DOC 🔒
• MODULE_NAME 🔒

Functions

• abs 🔒
  simple math function, the backing implement is datafusion’s abs math function
• acos 🔒
  simple math function, the backing implement is datafusion’s acos math function
• approx_distinct 🔒
• approx_percentile_cont 🔒
  Not implement in datafusion TODO(discord9): use greptime’s own impl instead
• argmax 🔒
• argmin 🔒
• array_agg 🔒
  effectively equals to list(vector)
• asin 🔒
  simple math function, the backing implement is datafusion’s asin math function
• atan 🔒
  simple math function, the backing implement is datafusion’s atan math function
• avg 🔒
  directly port from datafusion’s avg function
• ceil 🔒
  simple math function, the backing implement is datafusion’s ceil math function
• clip 🔒
• col 🔒
• correlation 🔒
• cos 🔒
  simple math function, the backing implement is datafusion’s cos math function
• count 🔒
• dataframe 🔒
  get __dataframe__ from globals and return it TODO(discord9): this is a terrible hack, we should find a better way to get __dataframe__
• datetime 🔒
• diff 🔒
• eval_aggr_func 🔒
• eval_func 🔒
• exp 🔒
  simple math function, the backing implement is datafusion’s exp math function
• extend_module 🔒
• first 🔒
  return first element in a PyVector in sliced new PyVector, if vector’s length is zero, return a zero sized slice instead
• floor 🔒
  simple math function, the backing implement is datafusion’s floor math function
• gen_inteveral 🔒
  generate interval time point
• gen_none_array 🔒
• interval 🔒
  func: exec on sliding window slice of given arr, expect it to always return a PyVector of one element ts: a vector of time stamp, expect to be Monotonous increase arr: actual data vector duration: the size of sliding window, also is the default step of sliding window’s per step
• last 🔒
  return last element in a PyVector in sliced new PyVector, if vector’s length is zero, return a zero sized slice instead
• lit 🔒
• ln 🔒
  simple math function, the backing implement is datafusion’s ln math function
• log2 🔒
  simple math function, the backing implement is datafusion’s log2 math function
• log10 🔒
  simple math function, the backing implement is datafusion’s log10 math function
• make_module 🔒
• max 🔒
• mean 🔒
• min 🔒
• next 🔒
• percentile 🔒
• polyval 🔒
• pow 🔒
  Pow function, bind from gp’s PowFunction
• pow_gp 🔒
  GrepTime’s own impl of pow function
• prev 🔒
• query 🔒
  get __query__ from globals and return it TODO(discord9): this is a terrible hack, we should find a better way to get __query__
• random 🔒
  return a random vector range from 0 to 1 and length of len
• round 🔒
  simple math function, the backing implement is datafusion’s round math function
• scipy_stats_norm_cdf 🔒
• scipy_stats_norm_pdf 🔒
• signum 🔒
  simple math function, the backing implement is datafusion’s signum math function
• sin 🔒
  simple math function, the backing implement is datafusion’s sin math function
• sqrt 🔒
  simple math function, the backing implement is datafusion’s sqrt math function
• stddev 🔒
• stddev_pop 🔒
• sum 🔒
• tan 🔒
  simple math function, the backing implement is datafusion’s tan math function
• variance 🔒
• variance_pop 🔒
• vector 🔒