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Postgres FD Implementation
Commit 0332993c authored by Peter Eisentraut's avatar Peter Eisentraut
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doc: Improve types in example 

Reported-by: default avatarNikolaus Thiel <klt@fsfe.org>
parent 0933fcee
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Showing with 3 additions and 3 deletions
doc/src/sgml/xfunc.sgml
View file @ 0332993c
...@@ -302,7 +302,7 @@ SELECT add_em(1, 2) AS answer; ...@@ -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); ...@@ -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 @@ $$ LANGUAGE SQL; ...@@ -345,7 +345,7 @@ $$ 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
......
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