Module datafusion_common::scalar

This module provides ScalarValue, an enum that can be used for storage of single elements

Enums

• ScalarValue
  Represents a dynamically typed, nullable single value. This is the single-valued counter-part to arrow’s Array.

Constants

• DT_MODE
• MDN_MODE
• MILLISECOND_MODE
• NANOSECOND_MODE
• YM_MODE

Traits

• ScalarType
  Trait used to map a NativeTime to a ScalarType.

Functions

• calculate_naives
  This function takes two timestamps with an optional timezone, and returns the duration between them. If one of the timestamps has a None timezone, the other one is also treated as having None.
• date32_add
• date64_add
• dt_to_micro
  This function computes the duration (in microseconds) of the given daytime-interval.
• dt_to_milli
  This function computes the duration (in milliseconds) of the given daytime-interval.
• dt_to_nano
  This function computes the duration (in nanoseconds) of the given daytime-interval.
• dt_to_sec
  This function computes the duration (in seconds) of the given daytime-interval.
• get_dict_value
  return a reference to the values array and the index into it for a dictionary array
• mdn_to_micro
  This function computes the duration (in microseconds) of the given month-day-nano-interval. Assumes a month is 30 days long.
• mdn_to_milli
  This function computes the duration (in milliseconds) of the given month-day-nano-interval. Assumes a month is 30 days long.
• mdn_to_nano
  This function computes the duration (in nanoseconds) of the given month-day-nano-interval. Assumes a month is 30 days long.
• mdn_to_sec
  This function computes the duration (in seconds) of the given month-day-nano-interval. Assumes a month is 30 days long.
• microseconds_add
• microseconds_add_array
• microseconds_sub
• milliseconds_add
• milliseconds_add_array
• milliseconds_sub
• nanoseconds_add
• nanoseconds_add_array
• nanoseconds_sub
• op_dt
  This function adds/subtracts two “raw” intervals (lhs and rhs) of the same type IntervalDayTimeType. The argument sign chooses between addition and subtraction. The return value is an 64-bit integer. It can be involved in a IntervalDayTimeType in the outer scope.
• op_dt_mdn
  This function adds/subtracts two “raw” intervals (lhs and rhs) of different types (IntervalDayTimeType and IntervalMonthDayNanoType, respectively). The argument sign chooses between addition and subtraction, the argument commute swaps lhs and rhs. The return value is an 128-bit integer. It can be involved in a IntervalMonthDayNanoType in the outer scope.
• op_mdn
  This function adds/subtracts two “raw” intervals (lhs and rhs) of the same type IntervalMonthDayNanoType. The argument sign chooses between addition and subtraction. The return value is an 128-bit integer. It can be involved in a IntervalMonthDayNanoType in the outer scope.
• op_ym
  This function adds/subtracts two “raw” intervals (lhs and rhs) of the same type IntervalYearMonthType. The argument sign chooses between addition and subtraction. The return value is an 32-bit integer. It can be involved in a IntervalYearMonthType in the outer scope.
• op_ym_dt
  This function adds/subtracts two “raw” intervals (lhs and rhs) of different types (IntervalYearMonthType and IntervalDayTimeType, respectively). The argument sign chooses between addition and subtraction, the argument commute swaps lhs and rhs. The return value is an 128-bit integer. It can be involved in a IntervalMonthDayNanoType in the outer scope.
• op_ym_mdn
  This function adds/subtracts two “raw” intervals (lhs and rhs) of different types (IntervalYearMonthType and IntervalMonthDayNanoType, respectively). The argument sign chooses between addition and subtraction, the argument commute swaps lhs and rhs. The return value is an 128-bit integer. It can be involved in a IntervalMonthDayNanoType in the outer scope.
• parse_timezones
  This function parses the timezone from string to Tz. If it cannot parse or timezone field is None, it returns None.
• seconds_add
• seconds_add_array
• seconds_sub
• ym_to_micro
  This function computes the duration (in milliseconds) of the given year-month-interval.
• ym_to_milli
  This function computes the duration (in milliseconds) of the given year-month-interval.
• ym_to_nano
  This function computes the duration (in nanoseconds) of the given year-month-interval.
• ym_to_sec
  This function computes the duration (in milliseconds) of the given year-month-interval.