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SECOND Function

Derives the seconds value from a Datetime value. Source value can be a a reference to a column containing Datetime values or a literal.

  • If the source Datetime value does not include a valid input for this function, a missing value is returned.

  • If the input values do not contain milliseconds, the generated output is expressed as integers from 0 to 59.

  • If the input values contain milliseconds, the generated output is a floating point value.

Wrangle vs. SQL: This function is part of Wrangle, a proprietary data transformation language. Wrangle is not SQL. For more information, see Wrangle Language.

Basic Usage

second(MyDate)

Output: Generates a column of values that retrieve the two-digit hour values from the MyDate column.

Syntax and Arguments

second(datetime_col)

Argument

Required?

Data Type

Description

datetime_col

Y

datetime

Name of column whose second values are to be computed

For more information on syntax standards, see Language Documentation Syntax Notes.

datetime_col

Name of the column whose seconds value is to be computed.

  • Missing values for this function in the source data result in missing values in the output.

  • Invalid or out-of-range source values generate missing values in the output.

  • Multiple columns and wildcards are not supported.

Usage Notes:

Required?

Data Type

Example Value

Yes

Datetime

myDate

Examples

提示

For additional examples, see Common Tasks.

Example - Date element functions

This example illustrates to how to use date-related functions to derive specific values for a Datetime column type.

Functions:

Item

Description

YEAR Function

Derives the four-digit year value from a Datetime value. Source value can be a a reference to a column containing Datetime values or a literal.

MONTH Function

Derives the month integer value from a Datetime value. Source value can be a a reference to a column containing Datetime values or a literal.

MONTHNAME Function

Derives the full name from a Datetime value of the corresponding month as a String. Source value can be a reference to a column containing Datetime values or a literal.

WEEKDAYNAME Function

Derives the full name from a Datetime value of the corresponding weekday as a String. Source value can be a reference to a column containing Datetime values or a literal.

DAY Function

Derives the numeric day value from a Datetime value. Source value can be a a reference to a column containing Datetime values or a literal.

HOUR Function

Derives the hour value from a Datetime value. Generated hours are expressed according to the 24-hour clock.

MINUTE Function

Derives the minutes value from a Datetime value. Minutes are expressed as integers from 0 to 59.

SECOND Function

Derives the seconds value from a Datetime value. Source value can be a a reference to a column containing Datetime values or a literal.

Source:

date

2/8/16 15:41

12/30/15 0:00

4/26/15 7:07

Transformation:

Transformation Name

New formula

Parameter: Formula type

Single row formula

Parameter: Formula

YEAR (date)

Transformation Name

New formula

Parameter: Formula type

Single row formula

Parameter: Formula

MONTH (date)

Transformation Name

New formula

Parameter: Formula type

Single row formula

Parameter: Formula

MONTHNAME (date)

Transformation Name

New formula

Parameter: Formula type

Single row formula

Parameter: Formula

WEEKDAYNAME (date)

Transformation Name

New formula

Parameter: Formula type

Single row formula

Parameter: Formula

DAY (date)

Transformation Name

New formula

Parameter: Formula type

Single row formula

Parameter: Formula

HOUR (date)

Transformation Name

New formula

Parameter: Formula type

Single row formula

Parameter: Formula

MINUTE (date)

Transformation Name

New formula

Parameter: Formula type

Single row formula

Parameter: Formula

SECOND (date)

Results:

注意

If the source Datetime value does not contain a valid input for one of these functions, no value is returned. See the second_date column below.

date

year_date

month_date

monthname_date

weekdayname_date

day_date

hour_date

minute_date

second_date

2/8/16 15:41

2016

2

February

Monday

8

15

41

12/30/15 0:00

2015

12

December

Wednesday

30

0

0

4/26/15 7:07

2015

4

April

Sunday

26

7

7