TRUNC (Date usage)#

Functionality: #

This Oracle function will remove a portion of the date, and return a valid date back to you.

Also see the numeric usage of the TRUNC function.

Parameters:#

Date/Time	The date that you want truncated
Format	(optional) An indication of what you want truncated to

Returns:#

Date

Errors:#

None

Operations: #

All Oracle date format fields are actually a Date/Time stamp with a date portion and a time portion. The application does not normally make use of the Time portion of a date variable and so the time is always defaulted as midnight (00:00:00.00)

Without a FORMAT parameter, this will return the date as a date at midnight. It is strongly recommended that you use this function when referencing the SYSDATE construct in relation to EXPIRY and EFFECTIVE dates.

With a FORMAT parameter, it will selectively remove part of the date information:

Examples:#

TRUNC(~) will return the date passed (but with a time stamp of midnight)

TRUNC(~,’MM’) will return the first day of the month

TRUNC(~,’YYYY’) will return the first day of the year

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Notes#

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