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Use the Postgres way to get the version number

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Unsurprisingly, there was one.
This commit is contained in:
Daniele Varrazzo 2018-03-19 19:06:42 +00:00
parent 2fd0eb050a
commit 07e944d9d1
9 changed files with 8 additions and 32 deletions
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24
lib/pg_repack.sql.in
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@ -16,30 +16,6 @@ CREATE FUNCTION repack.version_sql() RETURNS text AS
$$SELECT 'pg_repack REPACK_VERSION'::text$$
LANGUAGE SQL IMMUTABLE STRICT;
CREATE FUNCTION repack.pg_version(version_str text DEFAULT NULL) RETURNS integer
AS $$
-- Return the server version number in a format similar to PG_VERSION_NUM.
-- Call with no argument for the server version, pass an argument for testing
select (case
when array_length(tokens, 1) = 2 then
to_char(tokens[1], 'FM00') ||
'00' || to_char(tokens[2], 'FM00')
when array_length(tokens, 1) = 3 then
to_char(tokens[1], 'FM00') ||
to_char(tokens[2], 'FM00') ||
to_char(tokens[3], 'FM00')
else
-- This will raise an error which we can read
'unexpected version string: ' || coalesce($1, version())
end)::int
from (
select string_to_array(substring(
split_part(coalesce($1, version()), ' ', 2)
from '\d+\.\d+(?:\.\d+)?'), '.')::int[]
) as x (tokens);
$$
LANGUAGE SQL IMMUTABLE;
CREATE AGGREGATE repack.array_accum (
sfunc = array_append,
basetype = anyelement,

2
regress/expected/repack.out
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@ -12,7 +12,7 @@ select filename from (values
(100000, 100003, 'repack_2.out'),
(100003, 110000, 'repack_3.out')
) as x (min, max, filename)
where min <= repack.pg_version() and repack.pg_version() < max;
where current_setting('server_version_num')::int between min and max - 1;
filename
------------
repack.out

2
regress/expected/repack_1.out
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@ -12,7 +12,7 @@ select filename from (values
(100000, 100003, 'repack_2.out'),
(100003, 110000, 'repack_3.out')
) as x (min, max, filename)
where min <= repack.pg_version() and repack.pg_version() < max;
where current_setting('server_version_num')::int between min and max - 1;
filename
--------------
repack_1.out

2
regress/expected/repack_2.out
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@ -12,7 +12,7 @@ select filename from (values
(100000, 100003, 'repack_2.out'),
(100003, 110000, 'repack_3.out')
) as x (min, max, filename)
where min <= repack.pg_version() and repack.pg_version() < max;
where current_setting('server_version_num')::int between min and max - 1;
filename
--------------
repack_2.out

2
regress/expected/repack_3.out
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@ -12,7 +12,7 @@ select filename from (values
(100000, 100003, 'repack_2.out'),
(100003, 110000, 'repack_3.out')
) as x (min, max, filename)
where min <= repack.pg_version() and repack.pg_version() < max;
where current_setting('server_version_num')::int between min and max - 1;
filename
--------------
repack_3.out

2
regress/expected/repack_4.out
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@ -12,7 +12,7 @@ select filename from (values
(100000, 100003, 'repack_2.out'),
(100003, 110000, 'repack_3.out')
) as x (min, max, filename)
where min <= repack.pg_version() and repack.pg_version() < max;
where current_setting('server_version_num')::int between min and max - 1;
filename
--------------
repack_4.out

2
regress/expected/repack_5.out
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@ -12,7 +12,7 @@ select filename from (values
(100000, 100003, 'repack_2.out'),
(100003, 110000, 'repack_3.out')
) as x (min, max, filename)
where min <= repack.pg_version() and repack.pg_version() < max;
where current_setting('server_version_num')::int between min and max - 1;
filename
--------------
repack_5.out

2
regress/expected/repack_6.out
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@ -12,7 +12,7 @@ select filename from (values
(100000, 100003, 'repack_2.out'),
(100003, 110000, 'repack_3.out')
) as x (min, max, filename)
where min <= repack.pg_version() and repack.pg_version() < max;
where current_setting('server_version_num')::int between min and max - 1;
filename
--------------
repack_6.out

2
regress/sql/repack.sql
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@ -12,7 +12,7 @@ select filename from (values
(100000, 100003, 'repack_2.out'),
(100003, 110000, 'repack_3.out')
) as x (min, max, filename)
where min <= repack.pg_version() and repack.pg_version() < max;
where current_setting('server_version_num')::int between min and max - 1;
SET client_min_messages = warning;
--