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 | |
|---|---|
Parameter: Formula type | Single row formula |
Parameter: Formula | YEAR (date) |
Transformation Name | |
|---|---|
Parameter: Formula type | Single row formula |
Parameter: Formula | MONTH (date) |
Transformation Name | |
|---|---|
Parameter: Formula type | Single row formula |
Parameter: Formula | MONTHNAME (date) |
Transformation Name | |
|---|---|
Parameter: Formula type | Single row formula |
Parameter: Formula | WEEKDAYNAME (date) |
Transformation Name | |
|---|---|
Parameter: Formula type | Single row formula |
Parameter: Formula | DAY (date) |
Transformation Name | |
|---|---|
Parameter: Formula type | Single row formula |
Parameter: Formula | HOUR (date) |
Transformation Name | |
|---|---|
Parameter: Formula type | Single row formula |
Parameter: Formula | MINUTE (date) |
Transformation Name | |
|---|---|
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 |