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doc: Improve types in example

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Reported-by: Nikolaus Thiel <klt@fsfe.org>
This commit is contained in:
Peter Eisentraut 2017-06-09 19:49:18 -04:00
parent 0933fcee98
commit 0332993c4e
1 changed files with 3 additions and 3 deletions
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6
doc/src/sgml/xfunc.sgml
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@ -302,7 +302,7 @@ SELECT add_em(1, 2) AS answer;
bank account: bank account:
<programlisting> <programlisting>
CREATE FUNCTION tf1 (accountno integer, debit numeric) RETURNS integer AS $$ CREATE FUNCTION tf1 (accountno integer, debit numeric) RETURNS numeric AS $$
UPDATE bank UPDATE bank
SET balance = balance - debit SET balance = balance - debit
WHERE accountno = tf1.accountno; WHERE accountno = tf1.accountno;
@ -333,7 +333,7 @@ SELECT tf1(17, 100.0);
is: is:
<programlisting> <programlisting>
CREATE FUNCTION tf1 (accountno integer, debit numeric) RETURNS integer AS $$ CREATE FUNCTION tf1 (accountno integer, debit numeric) RETURNS numeric AS $$
UPDATE bank UPDATE bank
SET balance = balance - debit SET balance = balance - debit
WHERE accountno = tf1.accountno; WHERE accountno = tf1.accountno;
@ -345,7 +345,7 @@ $$ LANGUAGE SQL;
The same thing could be done in one command using <literal>RETURNING</>: The same thing could be done in one command using <literal>RETURNING</>:
<programlisting> <programlisting>
CREATE FUNCTION tf1 (accountno integer, debit numeric) RETURNS integer AS $$ CREATE FUNCTION tf1 (accountno integer, debit numeric) RETURNS numeric AS $$
UPDATE bank UPDATE bank
SET balance = balance - debit SET balance = balance - debit
WHERE accountno = tf1.accountno WHERE accountno = tf1.accountno