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Commitb67aaf2

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Add CASCADE support for CREATE EXTENSION.
Without CASCADE, if an extension has an unfullfilled dependency onanother extension, CREATE EXTENSION ERRORs out with "required extension... is not installed". That is annoying, especially when that dependencyis an implementation detail of the extension, rather than something theextension's user can make sense of.In addition to CASCADE this also includes a small set of regressiontests around CREATE EXTENSION.Author: Petr Jelinek, editorialized by Michael Paquier, Andres FreundReviewed-By: Michael Paquier, Andres Freund, Jeff JanesDiscussion: 557E0520.3040800@2ndquadrant.com
1 parentbf68679 commitb67aaf2

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32 files changed

+346
-89
lines changed

32 files changed

+346
-89
lines changed

‎contrib/hstore_plperl/expected/hstore_plperl.out

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
1-
CREATE EXTENSIONhstore;
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CREATE EXTENSION plperl;
3-
CREATE EXTENSION hstore_plperl;
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CREATE EXTENSIONhstore_plperl CASCADE;
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NOTICE: installing required extension "hstore"
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NOTICE: installing required extension "plperl"
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SELECT transforms.udt_schema, transforms.udt_name,
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routine_schema, routine_name,
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group_name, transform_type

‎contrib/hstore_plperl/expected/hstore_plperlu.out

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
1-
CREATE EXTENSIONhstore;
2-
CREATE EXTENSION plperlu;
3-
CREATE EXTENSION hstore_plperlu;
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CREATE EXTENSIONhstore_plperlu CASCADE;
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NOTICE: installing required extension "hstore"
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NOTICE: installing required extension "plperlu"
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SELECT transforms.udt_schema, transforms.udt_name,
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routine_schema, routine_name,
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group_name, transform_type

‎contrib/hstore_plperl/sql/hstore_plperl.sql

Lines changed: 1 addition & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,4 @@
1-
CREATE EXTENSION hstore;
2-
CREATE EXTENSION plperl;
3-
CREATE EXTENSION hstore_plperl;
1+
CREATE EXTENSION hstore_plperl CASCADE;
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SELECTtransforms.udt_schema,transforms.udt_name,
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routine_schema, routine_name,

‎contrib/hstore_plperl/sql/hstore_plperlu.sql

Lines changed: 1 addition & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,4 @@
1-
CREATE EXTENSION hstore;
2-
CREATE EXTENSION plperlu;
3-
CREATE EXTENSION hstore_plperlu;
1+
CREATE EXTENSION hstore_plperlu CASCADE;
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SELECTtransforms.udt_schema,transforms.udt_name,
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routine_schema, routine_name,

‎contrib/hstore_plpython/expected/hstore_plpython.out

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
1-
CREATE EXTENSIONplpython2u;
2-
CREATE EXTENSION hstore_plpython2u;
1+
CREATE EXTENSIONhstore_plpython2u CASCADE;
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NOTICE: installing required extension "plpython2u"
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-- test hstore -> python
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CREATE FUNCTION test1(val hstore) RETURNS int
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LANGUAGE plpythonu

‎contrib/hstore_plpython/sql/hstore_plpython.sql

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,4 @@
1-
CREATE EXTENSION plpython2u;
2-
CREATE EXTENSION hstore_plpython2u;
1+
CREATE EXTENSION hstore_plpython2u CASCADE;
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43

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-- test hstore -> python

‎contrib/ltree_plpython/expected/ltree_plpython.out

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
1-
CREATE EXTENSIONplpython2u;
2-
CREATE EXTENSION ltree_plpython2u;
1+
CREATE EXTENSIONltree_plpython2u CASCADE;
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NOTICE: installing required extension "plpython2u"
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CREATE FUNCTION test1(val ltree) RETURNS int
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LANGUAGE plpythonu
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TRANSFORM FOR TYPE ltree

‎contrib/ltree_plpython/sql/ltree_plpython.sql

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,4 @@
1-
CREATE EXTENSION plpython2u;
2-
CREATE EXTENSION ltree_plpython2u;
1+
CREATE EXTENSION ltree_plpython2u CASCADE;
32

43

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CREATEFUNCTIONtest1(val ltree) RETURNSint

‎doc/src/sgml/ref/create_extension.sgml

Lines changed: 42 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -25,6 +25,7 @@ CREATE EXTENSION [ IF NOT EXISTS ] <replaceable class="parameter">extension_name
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[ WITH ] [ SCHEMA <replaceable class="parameter">schema_name</replaceable> ]
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[ VERSION <replaceable class="parameter">version</replaceable> ]
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[ FROM <replaceable class="parameter">old_version</replaceable> ]
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[ CASCADE ]
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</synopsis>
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</refsynopsisdiv>
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@@ -94,6 +95,35 @@ CREATE EXTENSION [ IF NOT EXISTS ] <replaceable class="parameter">extension_name
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If not specified, and the extension's control file does not specify a
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schema either, the current default object creation schema is used.
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</para>
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<para>
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If the extension specifies <literal>schema</> in its control file,
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the schema cannot be overriden with <literal>SCHEMA</> clause.
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The <literal>SCHEMA</> clause in this case works as follows:
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<itemizedlist>
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<listitem>
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<para>
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If <replaceable class="parameter">schema_name</replaceable> matches
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the schema in control file, it will be used normally as there is no
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conflict.
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</para>
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</listitem>
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<listitem>
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<para>
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If the <literal>CASCADE</> clause is given, the
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<replaceable class="parameter">schema_name</replaceable> will only
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be used for the missing required extensions which do not specify
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<literal>schema</> in their control files.
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</para>
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</listitem>
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<listitem>
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<para>
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If <replaceable class="parameter">schema_name</replaceable> is not
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the same as the one in extension's control file and the
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<literal>CASCADE</> clause is not given, error will be thrown.
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</para>
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</listitem>
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</itemizedlist>
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</para>
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<para>
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Remember that the extension itself is not considered to be within any
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schema: extensions have unqualified names that must be unique
@@ -139,6 +169,18 @@ CREATE EXTENSION [ IF NOT EXISTS ] <replaceable class="parameter">extension_name
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>CASCADE</></term>
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<listitem>
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<para>
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Try to install extension including the required dependencies
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recursively. The <literal>SCHEMA</> option will be propagated
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to the required extensions. Other options are not recursively
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applied when using this clause.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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