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SQL procedures

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This adds a new object type "procedure" that is similar to a function
but does not have a return type and is invoked by the new CALL statement
instead of SELECT or similar.  This implementation is aligned with the
SQL standard and compatible with or similar to other SQL implementations.

This commit adds new commands CALL, CREATE/ALTER/DROP PROCEDURE, as well
as ALTER/DROP ROUTINE that can refer to either a function or a
procedure (or an aggregate function, as an extension to SQL).  There is
also support for procedures in various utility commands such as COMMENT
and GRANT, as well as support in pg_dump and psql.  Support for defining
procedures is available in all the languages supplied by the core
distribution.

While this commit is mainly syntax sugar around existing functionality,
future features will rely on having procedures as a separate object
type.

Reviewed-by: Andrew Dunstan <andrew.dunstan@2ndquadrant.com>
This commit is contained in:
Peter Eisentraut
2017-11-30 08:46:13 -05:00
parent 1761653bbb
commit e4128ee767
92 changed files with 2952 additions and 306 deletions
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12
doc/src/sgml/ref/alter_default_privileges.sgml
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@@ -39,7 +39,7 @@ GRANT { { USAGE | SELECT | UPDATE }
TO { [ GROUP ] <replaceable class="parameter">role_name</replaceable> | PUBLIC } [, ...] [ WITH GRANT OPTION ]
GRANT { EXECUTE | ALL [ PRIVILEGES ] }
ON FUNCTIONS
ON { FUNCTIONS | ROUTINES }
TO { [ GROUP ] <replaceable class="parameter">role_name</replaceable> | PUBLIC } [, ...] [ WITH GRANT OPTION ]
GRANT { USAGE | ALL [ PRIVILEGES ] }
@@ -66,7 +66,7 @@ REVOKE [ GRANT OPTION FOR ]
REVOKE [ GRANT OPTION FOR ]
{ EXECUTE | ALL [ PRIVILEGES ] }
ON FUNCTIONS
ON { FUNCTIONS | ROUTINES }
FROM { [ GROUP ] <replaceable class="parameter">role_name</replaceable> | PUBLIC } [, ...]
[ CASCADE | RESTRICT ]
@@ -93,7 +93,13 @@ REVOKE [ GRANT OPTION FOR ]
affect privileges assigned to already-existing objects.) Currently,
only the privileges for schemas, tables (including views and foreign
tables), sequences, functions, and types (including domains) can be
altered.
altered. For this command, functions include aggregates and procedures.
The words <literal>FUNCTIONS</literal> and <literal>ROUTINES</literal> are
equivalent in this command. (<literal>ROUTINES</literal> is preferred
going forward as the standard term for functions and procedures taken
together. In earlier PostgreSQL releases, only the
word <literal>FUNCTIONS</literal> was allowed. It is not possible to set
default privileges for functions and procedures separately.)
</para>
<para>