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| author | Tom Lane | 2009-08-10 16:10:19 +0000 |
|---|---|---|
| committer | Tom Lane | 2009-08-10 16:10:19 +0000 |
| commit | ba94293d6111a67ca82bb99c0e201055953dd74b (patch) | |
| tree | c4d6f80798d657ae635957ac14bdccce3d98c5a9 | |
| parent | 49d79c0d4058caf2feda2c9b7d80f4374201558b (diff) | |
Adjust extract(epoch) example to clarify that it includes fractional
seconds, per gripe from Richard Neill. Also, add a cross-reference to
the to_timestamp function.
| -rw-r--r-- | doc/src/sgml/func.sgml | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index 89c752f516..942dcbd340 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -6239,8 +6239,8 @@ SELECT EXTRACT(DOY FROM TIMESTAMP '2001-02-16 20:38:40'); </para> <screen> -SELECT EXTRACT(EPOCH FROM TIMESTAMP WITH TIME ZONE '2001-02-16 20:38:40-08'); -<lineannotation>Result: </lineannotation><computeroutput>982384720</computeroutput> +SELECT EXTRACT(EPOCH FROM TIMESTAMP WITH TIME ZONE '2001-02-16 20:38:40.12-08'); +<lineannotation>Result: </lineannotation><computeroutput>982384720.12</computeroutput> SELECT EXTRACT(EPOCH FROM INTERVAL '5 days 3 hours'); <lineannotation>Result: </lineannotation><computeroutput>442800</computeroutput> @@ -6250,10 +6250,13 @@ SELECT EXTRACT(EPOCH FROM INTERVAL '5 days 3 hours'); Here is how you can convert an epoch value back to a time stamp: </para> - <screen> -SELECT TIMESTAMP WITH TIME ZONE 'epoch' + 982384720 * INTERVAL '1 second'; +SELECT TIMESTAMP WITH TIME ZONE 'epoch' + 982384720.12 * INTERVAL '1 second'; </screen> + <para> + (The <function>to_timestamp</> function encapsulates the above + conversion.) + </para> </listitem> </varlistentry> |