src/ports/postgres/modules/utilities/test/pivot.sql_in

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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing,
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 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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DROP TABLE IF EXISTS "PIVSET";

CREATE TABLE "PIVSET"(
                  id INTEGER,
                  piv INTEGER,
                  val INTEGER
                );

INSERT INTO "PIVSET" VALUES
    (0, 10, 1),
    (0, 10, 2),
    (0, 20, 3),
    (1, 20, 4),
    (1, 30, 5),
    (1, 30, 6),
    (1, 10, 7),
    (NULL, 10, 8),
    (0, NULL, 9),
    (0, 10, NULL);

DROP TABLE IF EXISTS pivout;
SELECT pivot('"PIVSET"', 'pivout', 'id', 'piv', 'val');
SELECT * FROM pivout;

SELECT assert(val_avg_piv_20 = 3, 'Wrong output in pivoting') FROM pivout WHERE id = 0;

DROP VIEW IF EXISTS pivset_ext;
CREATE VIEW pivset_ext AS
    SELECT *,
    COALESCE(id + ("PIVSET".val / 3), 0) AS id2,
    COALESCE(piv + ("PIVSET".val / 3), 0) AS piv2,
    COALESCE(val + 10, 0) AS val2
   FROM "PIVSET";
SELECT id,id2,piv,piv2,val,val2 FROM pivset_ext
ORDER BY id,id2,piv,piv2,val,val2;

DROP TABLE IF EXISTS pivout;
SELECT pivot('pivset_ext', 'pivout', 'id,id2', 'piv', 'val');
SELECT * FROM pivout;

SELECT assert(val_avg_piv_10 = 1.5,
    'Wrong output in pivoting: index columns') FROM pivout
    WHERE id = 0 AND id2 = 0;

DROP TABLE IF EXISTS pivout;
SELECT pivot('pivset_ext', 'pivout', 'id', 'piv, piv2', 'val');
SELECT * FROM pivout;

SELECT assert(val_avg_piv_10_piv2_10 = 1.5,
    'Wrong output in pivoting: pivot columns') FROM pivout WHERE id = 0;

DROP TABLE IF EXISTS pivout;
SELECT pivot('pivset_ext', 'pivout', 'id', 'piv', 'val, val2');
SELECT * FROM pivout;

SELECT assert(val2_avg_piv_20 = 13,
    'Wrong output in pivoting: value columns') FROM pivout WHERE id = 0;

DROP TABLE IF EXISTS pivout;
SELECT pivot('pivset_ext', 'pivout', 'id', 'piv', 'val', 'sum');
SELECT * FROM pivout;

SELECT assert(val_sum_piv_10 = 3,
    'Wrong output in pivoting: aggregate functions') FROM pivout WHERE id = 0;

DROP TABLE IF EXISTS pivout;
SELECT pivot('pivset_ext', 'pivout', 'id', 'piv', 'val', 'sum', True);
SELECT * FROM pivout;

SELECT assert(val_sum_piv_null = 9,
    'Wrong output in pivoting: keep null') FROM pivout WHERE id = 0;

DROP TABLE IF EXISTS pivout;
SELECT pivot('pivset_ext', 'pivout', 'id', 'piv', 'val', 'sum', '111');
SELECT * FROM pivout;

SELECT assert(val_sum_piv_30 = 111,
    'Wrong output in pivoting: fill value') FROM pivout WHERE id = 0;

DROP TABLE IF EXISTS pivout;
SELECT pivot('pivset_ext', 'pivout', 'id', 'piv', 'val', 'sum', '111', True);
SELECT * FROM pivout;

SELECT assert(val_sum_piv_30 = 111 AND val_sum_piv_null = 9,
    'Wrong output in pivoting: fill value') FROM pivout WHERE id = 0;

DROP TABLE IF EXISTS pivout;
SELECT pivot('pivset_ext', 'pivout', 'id', 'piv', 'val', 'avg, sum');
SELECT * FROM pivout;

SELECT assert(val_avg_piv_10 = 1.5 AND val_sum_piv_10 = 3,
    'Wrong output in pivoting: aggregate functions') FROM pivout WHERE id = 0;

DROP TABLE IF EXISTS pivout;
SELECT pivot('pivset_ext', 'pivout', 'id', 'piv, piv2', 'val', 'avg, sum');
SELECT * FROM pivout;

SELECT assert(val_avg_piv_10_piv2_10 = 1.5 AND val_sum_piv_10_piv2_10 = 3,
    'Wrong output in pivoting: aggregate functions') FROM pivout WHERE id = 0;

DROP TABLE IF EXISTS pivout;
SELECT pivot('pivset_ext', 'pivout', 'id', 'piv', 'val, val2', 'avg, sum');
SELECT * FROM pivout;

SELECT assert(val_sum_piv_10 = 3 AND val2_avg_piv_20 = 13,
    'Wrong output in pivoting: aggregate functions') FROM pivout WHERE id = 0;

DROP TABLE IF EXISTS pivout;
SELECT pivot('pivset_ext', 'pivout', 'id', 'piv', 'val, val2',
    'val=avg, val2=sum');
SELECT * FROM pivout;

SELECT assert(val_avg_piv_10 = 1.5 AND val2_sum_piv_10 = 23,
    'Wrong output in pivoting: aggregate functions') FROM pivout WHERE id = 0;

DROP TABLE IF EXISTS pivout;
SELECT pivot('pivset_ext', 'pivout', 'id', 'piv', 'val, val2',
    'val=avg, val2=[avg,sum]');
SELECT * FROM pivout;

SELECT assert(val2_avg_piv_20 = 13 AND val2_sum_piv_10 = 23,
    'Wrong output in pivoting: aggregate functions') FROM pivout WHERE id = 0;

DROP TABLE IF EXISTS pivout;
DROP TABLE IF EXISTS pivout_dictionary;
SELECT pivot('pivset_ext', 'pivout', 'id, id2', 'piv, piv2', 'val, val2',
    'val=avg, val2=[avg,sum]', '111', True, True);
SELECT * FROM pivout;

SELECT assert(__p_8__ = 1.5,
             'Wrong output in pivoting: Output dictionary') FROM pivout
    WHERE id = 0 AND id2 = 0;

DROP FUNCTION IF EXISTS array_add1(ANYARRAY, ANYELEMENT);
DROP AGGREGATE IF EXISTS array_accum1 (anyelement);
CREATE FUNCTION array_add1(ANYARRAY, ANYELEMENT) RETURNS ANYARRAY AS $$
  SELECT $1 || $2
$$ LANGUAGE sql STRICT;

CREATE AGGREGATE array_accum1 (anyelement) (
    sfunc = array_add1,
    stype = anyarray,
    initcond = '{}'
);
DROP TABLE IF EXISTS pivout;
SELECT pivot('pivset_ext', 'pivout', 'id', 'piv', 'val', 'array_accum1');
SELECT * FROM pivout;

DROP TABLE IF EXISTS pivout;
DROP TABLE IF EXISTS pivout_dictionary;
SELECT pivot('pivset_ext', 'pivout', 'id, id2', 'piv, piv2', 'val, val2',
    'val=avg, val2=[avg,sum]', '111', True, True, 'a');
SELECT * FROM pivout;
SELECT * FROM pivout_dictionary;

DROP TABLE IF EXISTS pivout;
DROP TABLE IF EXISTS pivout_dictionary;
SELECT pivot('pivset_ext', 'pivout', 'id, id2', 'piv, piv2', 'val, val2',
    'val=avg, val2=[avg,sum]', '111', True, True, 's');
SELECT * FROM pivout;
SELECT * FROM pivout_dictionary;

DROP VIEW IF EXISTS pivset_ext;