SHOW server_version \gset
SELECT substring(:'server_version', '\d+')::int > 12 AS server_version_above_eleven
\gset
\if :server_version_above_eleven
\else
\q
\endif
SET search_path TO upgrade_columnar, public;
-- test we retained data
SELECT * FROM test_retains_data ORDER BY a;
 a |   b   |    c    |      d
---------------------------------------------------------------------
 1 | abc   | (1,4)   | {1,2,3,4}
 2 | pi    | (3,192) | {3,1,4,1,5}
 3 | earth | (4,22)  | {1,2,7,5,6}
(3 rows)

SELECT count(*) FROM test_retains_data;
 count
---------------------------------------------------------------------
     3
(1 row)

SELECT a,c FROM test_retains_data ORDER BY a;
 a |    c
---------------------------------------------------------------------
 1 | (1,4)
 2 | (3,192)
 3 | (4,22)
(3 rows)

SELECT b,d FROM test_retains_data ORDER BY a;
   b   |      d
---------------------------------------------------------------------
 abc   | {1,2,3,4}
 pi    | {3,1,4,1,5}
 earth | {1,2,7,5,6}
(3 rows)

SELECT * FROM test_retains_data ORDER BY a;
 a |   b   |    c    |      d
---------------------------------------------------------------------
 1 | abc   | (1,4)   | {1,2,3,4}
 2 | pi    | (3,192) | {3,1,4,1,5}
 3 | earth | (4,22)  | {1,2,7,5,6}
(3 rows)

-- test we retained data with a once truncated table
SELECT * FROM test_truncated ORDER BY a;
 a
---------------------------------------------------------------------
 11
 12
 13
(3 rows)

-- test we retained data with a once vacuum fulled table
SELECT * FROM test_vacuum_full ORDER BY a;
 a
---------------------------------------------------------------------
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
(13 rows)

-- test we retained data with a once alter typed table
SELECT * FROM test_alter_type ORDER BY a;
 a
---------------------------------------------------------------------
 1
 10
 11
 12
 13
 2
 3
 4
 5
 6
 7
 8
 9
(13 rows)

-- test we retained data with a once refreshed materialized view
SELECT * FROM matview ORDER BY a;
 a |    b
---------------------------------------------------------------------
 0 | {abc,pi}
 1 | {earth}
(2 rows)

-- test we retained options
SELECT * FROM columnar.options WHERE regclass = 'test_options_1'::regclass;
    regclass    | chunk_group_row_limit | stripe_row_limit | compression_level | compression
---------------------------------------------------------------------
 test_options_1 |            1000 |             5000 |                 3 | pglz
(1 row)

VACUUM VERBOSE test_options_1;
INFO:  statistics for "test_options_1":
storage id: xxxxx
total file size: 65536, total data size: 43136
compression rate: 1.91x
total row count: 10000, stripe count: 2, average rows per stripe: 5000
chunk count: 20, containing data for dropped columns: 0, none compressed: 10, pglz compressed: 10

SELECT count(*), sum(a), sum(b) FROM test_options_1;
 count |   sum    |  sum
---------------------------------------------------------------------
 10000 | 50005000 | 45010
(1 row)

SELECT * FROM columnar.options WHERE regclass = 'test_options_2'::regclass;
    regclass    | chunk_group_row_limit | stripe_row_limit | compression_level | compression
---------------------------------------------------------------------
 test_options_2 |            2000 |             6000 |                13 | none
(1 row)

VACUUM VERBOSE test_options_2;
INFO:  statistics for "test_options_2":
storage id: xxxxx
total file size: 163840, total data size: 125636
compression rate: 1.31x
total row count: 20000, stripe count: 4, average rows per stripe: 5000
chunk count: 30, containing data for dropped columns: 0, none compressed: 20, pglz compressed: 10

SELECT count(*), sum(a), sum(b) FROM test_options_2;
 count |    sum    |  sum
---------------------------------------------------------------------
 20000 | 100010000 | 65015
(1 row)