diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/func.sgml | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index 5dd95d73a1a..749360a4b71 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -10432,12 +10432,16 @@ SELECT EXTRACT(MONTH FROM INTERVAL '2 years 13 months'); <term><literal>quarter</literal></term> <listitem> <para> - The quarter of the year (1–4) that the date is in + The quarter of the year (1–4) that the date is in; + for <type>interval</type> values, the month field divided by 3 + plus 1 </para> <screen> SELECT EXTRACT(QUARTER FROM TIMESTAMP '2001-02-16 20:38:40'); <lineannotation>Result: </lineannotation><computeroutput>1</computeroutput> +SELECT EXTRACT(QUARTER FROM INTERVAL '1 year 6 months'); +<lineannotation>Result: </lineannotation><computeroutput>3</computeroutput> </screen> </listitem> </varlistentry> @@ -10508,9 +10512,16 @@ SELECT EXTRACT(SECOND FROM TIME '17:12:28.5'); <literal>week</literal> to get consistent results. </para> + <para> + For <type>interval</type> values, the week field is simply the number + of integral days divided by 7. + </para> + <screen> SELECT EXTRACT(WEEK FROM TIMESTAMP '2001-02-16 20:38:40'); <lineannotation>Result: </lineannotation><computeroutput>7</computeroutput> +SELECT EXTRACT(WEEK FROM INTERVAL '13 days 24 hours'); +<lineannotation>Result: </lineannotation><computeroutput>1</computeroutput> </screen> </listitem> </varlistentry> |