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doc: adjust order of NUMERIC arguments to match syntax

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Specifically, mention precision before scale

Reported-by: claytonjsalem@gmail.com

Discussion: https://postgr.es/m/152967566691.1268.1062965601465200209@wrigleys.postgresql.org

Backpatch-through: 9.3
This commit is contained in:
Bruce Momjian
2018-06-24 18:07:00 -04:00
parent c1975c1af7
commit 6350dcc1f4
1 changed files with 7 additions and 8 deletions
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15
doc/src/sgml/datatype.sgml
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@ -515,14 +515,13 @@
<para> <para>
We use the following terms below: The We use the following terms below: The
<firstterm>scale</firstterm> of a <type>numeric</type> is the <firstterm>precision</firstterm> of a <type>numeric</type>
count of decimal digits in the fractional part, to the right of is the total count of significant digits in the whole number,
the decimal point. The <firstterm>precision</firstterm> of a that is, the number of digits to both sides of the decimal point.
<type>numeric</type> is the total count of significant digits in The <firstterm>scale</firstterm> of a <type>numeric</type> is the
the whole number, that is, the number of digits to both sides of count of decimal digits in the fractional part, to the right of the
the decimal point. So the number 23.5141 has a precision of 6 decimal point. So the number 23.5141 has a precision of 6 and a
and a scale of 4. Integers can be considered to have a scale of scale of 4. Integers can be considered to have a scale of zero.
zero.
</para> </para>
<para> <para>