Module time_window

Time window expr and helper functions

Structs

• TimeWindowExpr
  Time window expr like date_bin(INTERVAL '1' MINUTE, ts), this type help with evaluating the expr using given timestamp

Functions

• binary_search_expr 🔒
• calc_expr_time_window_lower_bound 🔒
  Find the lower bound of time window in given expr and current timestamp.
• columnar_to_ts_vector 🔒
  Convert ColumnarValue to Vec<Option<Timestamp>>
• create_df_schema_for_ts_column 🔒
• eval_phy_time_window_expr 🔒
  Expect the phy expression only have one input column with Timestamp type, and also return Timestamp type
• find_time_window_expr 🔒
  Return (the column name of time index column, the time window expr, the expected time unit of time index column, the expr’s schema for evaluating the time window)
• probe_expr_time_window_upper_bound 🔒
  Probe for the upper bound for time window expression
• to_phy_expr 🔒