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Nikita Glukhov
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Add tests for deparsing of SQL/JSON constructors
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‎src/test/regress/expected/sqljson.out

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Original file line numberDiff line numberDiff line change
@@ -620,3 +620,127 @@ ERROR: duplicate JSON object key value
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SELECT JSON_OBJECTAGG(k: v ABSENT ON NULL WITH UNIQUE KEYS RETURNING jsonb)
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FROM (VALUES (1, 1), (1, NULL), (2, 2)) foo(k, v);
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ERROR: duplicate JSON object key value
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-- Test JSON_OBJECT deparsing
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT JSON_OBJECT('foo' : '1' FORMAT JSON, 'bar' : 'baz' RETURNING json);
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QUERY PLAN
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------------------------------------------------------------------------------
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Result
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Output: JSON_OBJECT('foo' : '1'::json, 'bar' : 'baz'::text RETURNING json)
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(2 rows)
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CREATE VIEW json_object_view AS
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SELECT JSON_OBJECT('foo' : '1' FORMAT JSON, 'bar' : 'baz' RETURNING json);
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\sv json_object_view
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CREATE OR REPLACE VIEW public.json_object_view AS
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SELECT JSON_OBJECT('foo' : '1'::text FORMAT JSON, 'bar' : 'baz'::text RETURNING json) AS "json_object"
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DROP VIEW json_object_view;
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-- Test JSON_ARRAY deparsing
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT JSON_ARRAY('1' FORMAT JSON, 2 RETURNING json);
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QUERY PLAN
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---------------------------------------------------
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Result
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Output: JSON_ARRAY('1'::json, 2 RETURNING json)
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(2 rows)
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CREATE VIEW json_array_view AS
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SELECT JSON_ARRAY('1' FORMAT JSON, 2 RETURNING json);
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\sv json_array_view
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CREATE OR REPLACE VIEW public.json_array_view AS
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SELECT JSON_ARRAY('1'::text FORMAT JSON, 2 RETURNING json) AS "json_array"
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DROP VIEW json_array_view;
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-- Test JSON_OBJECTAGG deparsing
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT JSON_OBJECTAGG(i: ('111' || i)::bytea FORMAT JSON WITH UNIQUE RETURNING text) FILTER (WHERE i > 3)
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FROM generate_series(1,5) i;
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QUERY PLAN
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--------------------------------------------------------------------------------------------------------------------------------------
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Aggregate
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Output: JSON_OBJECTAGG(i : (('111'::text || (i)::text))::bytea FORMAT JSON WITH UNIQUE KEYS RETURNING text) FILTER (WHERE (i > 3))
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-> Function Scan on pg_catalog.generate_series i
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Output: i
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Function Call: generate_series(1, 5)
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(5 rows)
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT JSON_OBJECTAGG(i: ('111' || i)::bytea FORMAT JSON WITH UNIQUE RETURNING text) OVER (PARTITION BY i % 2)
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FROM generate_series(1,5) i;
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QUERY PLAN
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-----------------------------------------------------------------------------------------------------------------------------------
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WindowAgg
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Output: JSON_OBJECTAGG(i : (('111'::text || (i)::text))::bytea FORMAT JSON WITH UNIQUE KEYS RETURNING text) OVER (?), ((i % 2))
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-> Sort
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Output: ((i % 2)), i
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Sort Key: ((i.i % 2))
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-> Function Scan on pg_catalog.generate_series i
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Output: (i % 2), i
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Function Call: generate_series(1, 5)
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(8 rows)
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CREATE VIEW json_objectagg_view AS
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SELECT JSON_OBJECTAGG(i: ('111' || i)::bytea FORMAT JSON WITH UNIQUE RETURNING text) FILTER (WHERE i > 3)
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FROM generate_series(1,5) i;
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\sv json_objectagg_view
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CREATE OR REPLACE VIEW public.json_objectagg_view AS
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SELECT JSON_OBJECTAGG(i.i : ('111'::text || i.i)::bytea FORMAT JSON WITH UNIQUE KEYS RETURNING text) FILTER (WHERE i.i > 3) AS "json_objectagg"
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FROM generate_series(1, 5) i(i)
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DROP VIEW json_objectagg_view;
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-- Test JSON_ARRAYAGG deparsing
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT JSON_ARRAYAGG(('111' || i)::bytea FORMAT JSON NULL ON NULL RETURNING text) FILTER (WHERE i > 3)
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FROM generate_series(1,5) i;
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QUERY PLAN
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-----------------------------------------------------------------------------------------------------------------------------
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Aggregate
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Output: JSON_ARRAYAGG((('111'::text || (i)::text))::bytea FORMAT JSON NULL ON NULL RETURNING text) FILTER (WHERE (i > 3))
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-> Function Scan on pg_catalog.generate_series i
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Output: i
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Function Call: generate_series(1, 5)
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(5 rows)
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT JSON_ARRAYAGG(('111' || i)::bytea FORMAT JSON NULL ON NULL RETURNING text) OVER (PARTITION BY i % 2)
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FROM generate_series(1,5) i;
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QUERY PLAN
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--------------------------------------------------------------------------------------------------------------------------
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WindowAgg
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Output: JSON_ARRAYAGG((('111'::text || (i)::text))::bytea FORMAT JSON NULL ON NULL RETURNING text) OVER (?), ((i % 2))
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-> Sort
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Output: ((i % 2)), i
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Sort Key: ((i.i % 2))
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-> Function Scan on pg_catalog.generate_series i
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Output: (i % 2), i
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Function Call: generate_series(1, 5)
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(8 rows)
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CREATE VIEW json_arrayagg_view AS
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SELECT JSON_ARRAYAGG(('111' || i)::bytea FORMAT JSON NULL ON NULL RETURNING text) FILTER (WHERE i > 3)
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FROM generate_series(1,5) i;
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\sv json_arrayagg_view
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CREATE OR REPLACE VIEW public.json_arrayagg_view AS
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SELECT JSON_ARRAYAGG(('111'::text || i.i)::bytea FORMAT JSON NULL ON NULL RETURNING text) FILTER (WHERE i.i > 3) AS "json_arrayagg"
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FROM generate_series(1, 5) i(i)
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DROP VIEW json_arrayagg_view;
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-- Test JSON_ARRAY(subquery) deparsing
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT JSON_ARRAY(SELECT i FROM (VALUES (1), (2), (NULL), (4)) foo(i) RETURNING jsonb);
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QUERY PLAN
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---------------------------------------------------------------------
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Result
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Output: $0
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InitPlan 1 (returns $0)
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-> Aggregate
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Output: JSON_ARRAYAGG("*VALUES*".column1 RETURNING jsonb)
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-> Values Scan on "*VALUES*"
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Output: "*VALUES*".column1
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(7 rows)
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CREATE VIEW json_array_subquery_view AS
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SELECT JSON_ARRAY(SELECT i FROM (VALUES (1), (2), (NULL), (4)) foo(i) RETURNING jsonb);
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\sv json_array_subquery_view
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CREATE OR REPLACE VIEW public.json_array_subquery_view AS
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SELECT ( SELECT JSON_ARRAYAGG(q.a RETURNING jsonb) AS "json_arrayagg"
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FROM ( SELECT foo.i
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FROM ( VALUES (1), (2), (NULL::integer), (4)) foo(i)) q(a)) AS "json_array"
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DROP VIEW json_array_subquery_view;

‎src/test/regress/sql/sqljson.sql

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Original file line numberDiff line numberDiff line change
@@ -213,3 +213,70 @@ FROM (VALUES (1, 1), (1, NULL), (2, 2)) foo(k, v);
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SELECT JSON_OBJECTAGG(k: v ABSENT ON NULL WITH UNIQUE KEYS RETURNING jsonb)
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FROM (VALUES (1, 1), (1, NULL), (2, 2)) foo(k, v);
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-- Test JSON_OBJECT deparsing
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT JSON_OBJECT('foo' : '1' FORMAT JSON, 'bar' : 'baz' RETURNING json);
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CREATE VIEW json_object_view AS
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SELECT JSON_OBJECT('foo' : '1' FORMAT JSON, 'bar' : 'baz' RETURNING json);
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\sv json_object_view
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DROP VIEW json_object_view;
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-- Test JSON_ARRAY deparsing
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT JSON_ARRAY('1' FORMAT JSON, 2 RETURNING json);
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CREATE VIEW json_array_view AS
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SELECT JSON_ARRAY('1' FORMAT JSON, 2 RETURNING json);
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\sv json_array_view
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DROP VIEW json_array_view;
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-- Test JSON_OBJECTAGG deparsing
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT JSON_OBJECTAGG(i: ('111' || i)::bytea FORMAT JSON WITH UNIQUE RETURNING text) FILTER (WHERE i > 3)
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FROM generate_series(1,5) i;
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT JSON_OBJECTAGG(i: ('111' || i)::bytea FORMAT JSON WITH UNIQUE RETURNING text) OVER (PARTITION BY i % 2)
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FROM generate_series(1,5) i;
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CREATE VIEW json_objectagg_view AS
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SELECT JSON_OBJECTAGG(i: ('111' || i)::bytea FORMAT JSON WITH UNIQUE RETURNING text) FILTER (WHERE i > 3)
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FROM generate_series(1,5) i;
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\sv json_objectagg_view
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DROP VIEW json_objectagg_view;
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-- Test JSON_ARRAYAGG deparsing
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT JSON_ARRAYAGG(('111' || i)::bytea FORMAT JSON NULL ON NULL RETURNING text) FILTER (WHERE i > 3)
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FROM generate_series(1,5) i;
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT JSON_ARRAYAGG(('111' || i)::bytea FORMAT JSON NULL ON NULL RETURNING text) OVER (PARTITION BY i % 2)
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FROM generate_series(1,5) i;
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CREATE VIEW json_arrayagg_view AS
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SELECT JSON_ARRAYAGG(('111' || i)::bytea FORMAT JSON NULL ON NULL RETURNING text) FILTER (WHERE i > 3)
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FROM generate_series(1,5) i;
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\sv json_arrayagg_view
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DROP VIEW json_arrayagg_view;
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-- Test JSON_ARRAY(subquery) deparsing
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EXPLAIN (VERBOSE, COSTS OFF)
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SELECT JSON_ARRAY(SELECT i FROM (VALUES (1), (2), (NULL), (4)) foo(i) RETURNING jsonb);
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CREATE VIEW json_array_subquery_view AS
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SELECT JSON_ARRAY(SELECT i FROM (VALUES (1), (2), (NULL), (4)) foo(i) RETURNING jsonb);
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\sv json_array_subquery_view
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DROP VIEW json_array_subquery_view;

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