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| -rw-r--r-- | Docs/manual.texi | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Docs/manual.texi b/Docs/manual.texi index 2d11e5a7c67..9042117f9b5 100644 --- a/Docs/manual.texi +++ b/Docs/manual.texi @@ -32499,8 +32499,9 @@ mysql> SELECT UNIX_TIMESTAMP('1997-10-04 22:23:00'); When @code{UNIX_TIMESTAMP} is used on a @code{TIMESTAMP} column, the function will return the internal timestamp value directly, with no implicit ``string-to-unix-timestamp'' conversion. -If you give @code{UNIX_TIMESTAMP()} a wrong or out-of-range date, it will -return 0. +If you pass an out-of-range date to @code{UNIX_TIMESTAMP()} it will +return 0, but please note that only basic checking is performed +(year 1970-2037, month 01-12, day 01-31). If you want to subtract @code{UNIX_TIMESTAMP()} columns, you may want to cast the result to signed integers. @xref{Cast Functions}. |