OpenEdge Data Management: DataServer for Microsoft SQL Server

Initial Programming Considerations
2–22
MS SQL Server 2008 offers the DATETIMEOFFSET data type to support time zones in a datetime
column as well as three other datetime data types. Table 2–7 defines the MS SQL 2008 data
types and identifies compatible ABL data types.
Table 2–7: MS SQL Server 2008 datetime data types
MS SQL Server data
type Description
DATE Provides day of the year based on the
Gregorian calendar.
TIME Provides time of day based on 24-hour
clock.
DATETIME2 Provides variable precision of up to 100
nanoseconds.
DATETIMEOFFSET Provides date and time data with time
zone offset and variable precision of up
to 100 nanoseconds.
Compatible
OpenEdge data
types
DATE1 CHAR
DATETIME 1,2
DATETIME-TZ2 CHAR 1
DATETIME 2
DATE
CHAR
DATETIME1,2,3 DATETIME-TZ2,3 DATE
CHAR
DATETIME2,3 DATETIME-TZ 1,2,3
1. Default data type mapping for this MS SQL Server data type.
2. New MSS data types with a time component support fractional accuracy up to 100 nanoseconds. Hence, when we
receive any time data from an OpenEdge datetime data type with a time component, the fractional portion of the
time value greater than millisecond accuracy is dropped in the conversion. For example, a time value
‘12:00:00.1235678’ in MS SQL Server would yield a resultant value of ’12:00:00.123’ in an OpenEdge
DATETIME column. NOTE: The time component is truncated rather than rounded in order to be consistent with
MS SQL Server which also truncates the value when converting between two datetime data types defined with
inconsistent fractional accuracy.
3. ABL data type limits MSS data type accuracy to millisecond precision.
Note: Date time related data types of MS SQL Server 2008 will work only with the SQL
Native Client 2008 (SNAC 10.0) driver and not with earlier native and non-native
drivers, as earlier version drivers will not support 2008 date time data types.