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doc: improve description of subscripting of arrays 

It wasn't clear the non-integers are cast to integers for subscripting,
rather than throwing an error.

Reported-by: sean@materialize.io

Discussion: https://postgr.es/m/159538675800.624.7728794628229799531@wrigleys.postgresql.org

Backpatch-through: 9.5
This commit is contained in:
Bruce Momjian 2020-08-31 13:49:17 -04:00
parent 104a7dad36
commit e8e15385a1
1 changed files with 1 additions and 1 deletions
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doc/src/sgml/syntax.sgml
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@ -1383,7 +1383,7 @@ CREATE FUNCTION dept(text) RETURNS dept
</synopsis>
(Here, the brackets <literal>[ ]</literal> are meant to appear literally.)
Each <replaceable>subscript</replaceable> is itself an expression,
which must yield an integer value.
which will be rounded to the nearest integer value.
</para>
<para>