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Handling data formats with Data Prep

Last update: Thu Sep 26 2024 00:00:00 GMT+0000 (Coordinated Universal Time)

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  • Developer

Data Prep can robustly handle different formats of data ingested into 蜜豆视频 Experience Platform. This document outlines how different data formats are treated with Data Prep.

Booleans booleans

If the source type is a string and the target type is a boolean, Data Prep can automatically parse the value and convert the source value to a boolean.

The values y, yes, Y, YES, on, ON, true, and TRUE are automatically be parsed to be true.

The values n, N, no, NO, off, OFF, false, and FALSE are automatically be parsed to be false.

Dates dates

Data Prep supports date functions, both as strings and as datetime objects.

Date function format

The date function converts strings and datetime objects to become an ISO 8601 formatted ZonedDateTime object.

Format

date({DATE}, {FORMAT}, {DEFAULT_DATE})
Parameter
Description
{DATE}
Required. The string that represents the date.
{FORMAT}
Optional. The string representing the format of the source date. More information on string formatting can be found in the date/time format string section.
{DEFAULT_DATE}
Optional. The default date to be returned if the provided date is null.

For example, the expression date(orderDate, "yyyy-MM-dd") will convert an orderDate value of 鈥淒ecember 31st, 2020鈥 into a datetime value of 鈥2020-12-31鈥.

Date function conversions

When string fields from incoming data are mapped to date fields in schemas using Experience Data Model (XDM), the date format should be explicitly mentioned. If not explicitly mentioned, Data Prep will attempt to convert the input data by matching it to the following formats. Once a matching format is found, it will stop evaluating any subsequent formats.

"yyyy-MM-dd HH:mm:ssZ",
"yyyy-MM-dd HH:mm:ss.SSSZ",
"yyyy-MM-dd HH:mm:ss.SSS",
"yyyy-MM-dd'T'HH:mm:ss.SSSX",
"yyyy-MM-dd'T'HH:mm:ss'Z'",
"yyyy-MM-dd",
"yyyy/MM/dd",
"yyyy.MM.dd",
"yyyy-MMM-dd",
"yyyyMMdd",
"MM-dd-yyyy",
"MMddyyyy",
"M/dd/yyyy",
"dd.M.yyyy",
"M/dd/yyyy hh:mm:ss a",
"dd.M.yyyy hh:mm:ss a",
"dd.MMM.yyyy",
"dd-MMM-yyyy"
IMPORTANT
Data Prep will try to convert strings to dates as best as possible. However, these conversions can lead to undesirable results. For example, the string value 鈥12112020鈥 matches the pattern 鈥淢Mddyyyy鈥, but the user may have intended for the date to be read with the pattern 鈥渄dMMyyyy鈥. As a result, users should explicitly mention the date format for strings.

Date/time format strings format

TIP
Currently, the date function in batch ingestion removes milliseconds if the date values are in this format: 2024-05-05 20:39:00.005 PST. To preserve milliseconds, use this format: 2024-05-05 20:39:00.005-0800

The following table shows which pattern letters are defined for format strings. Please note that the letters are case sensitive.

Symbol
Meaning
Presentation
Example
G
The era
Text
AD; Anno Domini; A
Y
Year, based on the ISO Week
Number
1996; 96
y
The year
Number
2004; 04
M/L
Month of the year
Number/Text
7; 07; Jul; July; J
w
Week in the year
Number
27
W
Week of the month
Number
3
D
Day of the year
Number
189
d
Day of the month
Number
10
F
Day of the week in a month
Number
2
E
Name of the day of the week
Text
Tuesday; Tue
u
Day of the week, as a number. 1 represents Monday, 鈥, 7 represents Sunday
Number
1
a
AM/PM marker
Text
PM
H
Hour in day (0-23)
Number
0
k
Hour in day (1-24)
Number
24
K
Hour in AM/PM (0-11)
Number
0
h
Hour in AM/PM (1-12)
Number
12
m
Minute in the hour
Number
38
s
Second in the minute
Number
44
S
Millisecond
Number
245
z
Time zone
General time zone
Pacific Standard Time; PST; GMT-08:00
Z
Time zone
RFC 822 time zone
-0800
X
Time zone
ISO 8601 time zone
-08; -0800; -08:00
V
Time zone ID
Text
America/Los_Angeles
O
Time zone offset
Text
GMT+8
Q/q
Quarter of the year
Number/Text
3; 03; Q3; 3rd quarter

Maps maps

Maps are currently not supported in Data Prep.

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