select * from json_table('[{"a": 1, "b": [11,111]}, {"a": 2, "b": [22,222]}]', '$[*]' COLUMNS( a INT PATH '$.a')) as tt; a 1 2 select * from JSON_TABLE( '[ {"a": 1, "b": [11,111]}, {"a": 2, "b": [22,222]}, {"a":3}]', '$[*]' COLUMNS( a INT PATH '$.a', NESTED PATH '$.b[*]' COLUMNS (b INT PATH '$'))) as jt; a b 1 11 1 111 2 22 2 222 3 NULL SELECT * FROM JSON_TABLE( '[ {"a": 1, "b": [11,111]}, {"a": 2, "b": [22,222]}, {"a":3}]', '$[*]' COLUMNS( a INT PATH '$.a', NESTED PATH '$.b[*]' COLUMNS (b INT PATH '$'), NESTED PATH '$.b[*]' COLUMNS (c INT PATH '$') ) ) jt; a b c 1 11 NULL 1 111 NULL 1 NULL 11 1 NULL 111 2 22 NULL 2 222 NULL 2 NULL 22 2 NULL 222 3 NULL NULL create table t1 (id varchar(5), json varchar(1024)); insert into t1 values ('j1', '[{"a": 1, "b": [11,111]}, {"a": 2, "b": [22,222]}]'); insert into t1 values ('j2', '[{"a": 3, "b": [11,111]}, {"a": 4, "b": [22,222]}, {"a": 5, "b": [22,222]}]'); select id, json, a from t1, json_table(t1.json, '$[*]' COLUMNS(js_id FOR ORDINALITY, a INT PATH '$.a')) as tt; id json a j1 [{"a": 1, "b": [11,111]}, {"a": 2, "b": [22,222]}] 1 j1 [{"a": 1, "b": [11,111]}, {"a": 2, "b": [22,222]}] 2 j2 [{"a": 3, "b": [11,111]}, {"a": 4, "b": [22,222]}, {"a": 5, "b": [22,222]}] 3 j2 [{"a": 3, "b": [11,111]}, {"a": 4, "b": [22,222]}, {"a": 5, "b": [22,222]}] 4 j2 [{"a": 3, "b": [11,111]}, {"a": 4, "b": [22,222]}, {"a": 5, "b": [22,222]}] 5 select * from t1, JSON_TABLE(t1.json, '$[*]' COLUMNS(js_id FOR ORDINALITY, a INT PATH '$.a', NESTED PATH '$.b[*]' COLUMNS (l_js_id FOR ORDINALITY, b INT PATH '$'))) as jt; id json js_id a l_js_id b j1 [{"a": 1, "b": [11,111]}, {"a": 2, "b": [22,222]}] 1 1 1 11 j1 [{"a": 1, "b": [11,111]}, {"a": 2, "b": [22,222]}] 1 1 2 111 j1 [{"a": 1, "b": [11,111]}, {"a": 2, "b": [22,222]}] 2 2 1 22 j1 [{"a": 1, "b": [11,111]}, {"a": 2, "b": [22,222]}] 2 2 2 222 j2 [{"a": 3, "b": [11,111]}, {"a": 4, "b": [22,222]}, {"a": 5, "b": [22,222]}] 1 3 1 11 j2 [{"a": 3, "b": [11,111]}, {"a": 4, "b": [22,222]}, {"a": 5, "b": [22,222]}] 1 3 2 111 j2 [{"a": 3, "b": [11,111]}, {"a": 4, "b": [22,222]}, {"a": 5, "b": [22,222]}] 2 4 1 22 j2 [{"a": 3, "b": [11,111]}, {"a": 4, "b": [22,222]}, {"a": 5, "b": [22,222]}] 2 4 2 222 j2 [{"a": 3, "b": [11,111]}, {"a": 4, "b": [22,222]}, {"a": 5, "b": [22,222]}] 3 5 1 22 j2 [{"a": 3, "b": [11,111]}, {"a": 4, "b": [22,222]}, {"a": 5, "b": [22,222]}] 3 5 2 222 select * from t1, JSON_TABLE(t1.no_field, '$[*]' COLUMNS(js_id FOR ORDINALITY, a INT PATH '$.a', NESTED PATH '$.b[*]' COLUMNS (l_js_id FOR ORDINALITY, b INT PATH '$'))) as jt; ERROR 42S22: Unknown column 't1.no_field' in 'JSON_TABLE argument' select * from t1, JSON_TABLE(t1.no_field, '$[*]' COLUMNS(js_id FOR ORDINALITY, a INT PATH '$.a', NESTED PATH '$.b[*]' COLUMNS (l_js_id FOR ORDINALITY, a INT PATH '$'))) as jt; ERROR 42S21: Duplicate column name 'a' DROP TABLE t1; create table t1 (item_name varchar(32), item_props varchar(1024)); insert into t1 values ('Laptop', '{"color": "black", "price": 1000}'); insert into t1 values ('Jeans', '{"color": "blue", "price": 50}'); select * from t1 left join json_table(t1.item_props,'$' columns( color varchar(100) path '$.color')) as T on 1; item_name item_props color Laptop {"color": "black", "price": 1000} black Jeans {"color": "blue", "price": 50} blue select * from t1 right join json_table(t1.item_props,'$' columns( color varchar(100) path '$.color')) as T on 1; ERROR 42S22: Unknown column 't1.item_props' in 'JSON_TABLE argument' DROP TABLE t1; select * from JSON_TABLE( '[ {"xa": 1, "b": [11,111]}, {"a": 2, "b": [22,222]}, {"a":3}]', '$[*]' COLUMNS( a INT PATH '$.a' default 101 on empty, NESTED PATH '$.b[*]' COLUMNS (b INT PATH '$'))) as jt; a b 101 11 101 111 2 22 2 222 3 NULL select * from JSON_TABLE( '[ {"xa": 1, "b": [11,111]}, {"a": 2, "b": [22,222]}, {"a":3}]', '$[*]' COLUMNS( a INT PATH '$.a' default 202 on error, NESTED PATH '$.b[*]' COLUMNS (b INT PATH '$'))) as jt; a b NULL 11 NULL 111 2 22 2 222 3 NULL select * from JSON_TABLE( '[ {"a": [1, 2], "b": [11,111]}, {"a": 2, "b": [22,222]}, {"a":3}]', '$[*]' COLUMNS( a INT PATH '$.a' default '101' on empty, NESTED PATH '$.b[*]' COLUMNS (b INT PATH '$'))) as jt; a b NULL 11 NULL 111 2 22 2 222 3 NULL select * from JSON_TABLE( '[ {"a": [1, 2], "b": [11,111]}, {"a": 2, "b": [22,222]}, {"a":3}]', '$[*]' COLUMNS( a INT PATH '$.a' default '202' on error default '101' on empty, NESTED PATH '$.b[*]' COLUMNS (b INT PATH '$'))) as jt; a b 202 11 202 111 2 22 2 222 3 NULL select * from json_table('{"a": "b"}', '$' columns(col1 varchar(32) path '$.fooo' default 0.5 on empty)) as T; col1 0.5 select * from json_table('{"a": "b"}', '$' columns(col1 varchar(32) path '$.fooo' default 5 on empty)) as T; col1 5 select * from json_table('{"a": "b"}', '$' columns(col1 varchar(32) path '$.fooo' default 'asdf' on empty)) as T; col1 asdf select * from json_table('{"a": "b"}', '$' columns(col1 varchar(32) path '$.fooo' default -0.5 on empty)) as T; col1 -0.5 select * from json_table('{"a": "b"}', '$' columns(col1 varchar(32) path '$.fooo' default 18446744073709551615 on empty)) as T; col1 18446744073709551615 select * from json_table('{"a": "b"}', '$' columns(col1 varchar(32) path '$.fooo' default DATE '2021-01-01' on empty)) as T; col1 2021-01-01 create view v as select * from json_table('{"a": "b"}', '$' columns(col1 varchar(32) path '$.fooo' default 5 on empty)) as T; select * from v; col1 5 show create view v; View Create View character_set_client collation_connection v CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v` AS select `T`.`col1` AS `col1` from JSON_TABLE('{"a": "b"}', '$' COLUMNS (`col1` varchar(32) PATH '$.fooo' DEFAULT 5 ON EMPTY)) `T` latin1 latin1_swedish_ci drop view v; create view v as select * from json_table('{"a": "b"}', '$' columns(col1 varchar(32) path '$.fooo' default 18446744073709551615 on empty)) as T; select * from v; col1 18446744073709551615 show create view v; View Create View character_set_client collation_connection v CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v` AS select `T`.`col1` AS `col1` from JSON_TABLE('{"a": "b"}', '$' COLUMNS (`col1` varchar(32) PATH '$.fooo' DEFAULT 18446744073709551615 ON EMPTY)) `T` latin1 latin1_swedish_ci drop view v; create view v as select * from json_table('{"a": "b"}', '$' columns(col1 varchar(32) path '$.fooo' default 'asdf' on empty)) as T; select * from v; col1 asdf show create view v; View Create View character_set_client collation_connection v CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v` AS select `T`.`col1` AS `col1` from JSON_TABLE('{"a": "b"}', '$' COLUMNS (`col1` varchar(32) PATH '$.fooo' DEFAULT 'asdf' ON EMPTY)) `T` latin1 latin1_swedish_ci drop view v; select * from JSON_TABLE( '[{"a": [1, 2], "b": [11,111]}, {"a": 2, "b": [22,222]}, {"a":3} xx YY]', '$[*]' COLUMNS( a INT PATH '$.a' default '202' on error default '101' on empty, NESTED PATH '$.b[*]' COLUMNS (b INT PATH '$'))) as jt; ERROR HY000: Syntax error in JSON text in argument 1 to function 'JSON_TABLE' at position 65 select * from JSON_TABLE( '[{"a": [1, 2], "b": [11,111]}, {"a": 2, "b": [22,222]}, {"a":3}]', '$[*]' COLUMNS( a INT PATH '$.a' error on error default '101' on empty, NESTED PATH '$.b[*]' COLUMNS (b INT PATH '$'))) as jt; ERROR HY000: Can't store an array or an object in the scalar column 'a' of JSON_TABLE 'jt'. select * from json_table('{"a":0}',"$" columns(a decimal(1,1) path '$.a')) foo; a 0.0 connect con1,localhost,root,,; select a from json_table('{"a":0}',"$" columns(a for ordinality)) foo; a 1 connection default; disconnect con1; create table t1 ( color varchar(32), price int ); insert into t1 values ("red", 100), ("blue", 50); insert into t1 select * from t1; insert into t1 select * from t1; set @save_optimizer_switch=@@optimizer_switch; set optimizer_switch='firstmatch=off'; select * from json_table('[{"color": "blue", "price": 50}, {"color": "red", "price": 100}]', '$[*]' columns( color varchar(100) path '$.color', price text path '$.price' ) ) as T where T.color in (select color from t1 where t1.price=T.price); color price blue 50 red 100 set @@optimizer_switch=@save_optimizer_switch; drop table t1; select * from json_table(' [ {"color": "blue", "sizes": [1,2,3,4], "prices" : [10,20]}, {"color": "red", "sizes": [10,11,12,13,14], "prices" : [100,200,300]} ]', '$[*]' columns( color varchar(4) path '$.color', seq0 for ordinality, nested path '$.sizes[*]' columns (seq1 for ordinality, size int path '$'), nested path '$.prices[*]' columns (seq2 for ordinality, price int path '$') ) ) as T; color seq0 seq1 size seq2 price blue 1 1 1 NULL NULL blue 1 2 2 NULL NULL blue 1 3 3 NULL NULL blue 1 4 4 NULL NULL blue 1 NULL NULL 1 10 blue 1 NULL NULL 2 20 red 2 1 10 NULL NULL red 2 2 11 NULL NULL red 2 3 12 NULL NULL red 2 4 13 NULL NULL red 2 5 14 NULL NULL red 2 NULL NULL 1 100 red 2 NULL NULL 2 200 red 2 NULL NULL 3 300 select * from json_table('[{"color": "blue", "price": 50}, {"color": "red", "price": 100}, {"color": "rojo", "price": 10.0}, {"color": "blanco", "price": 11.0}]', '$[*]' columns( color varchar(100) path '$.color', price text path '$.price', seq for ordinality)) as T order by color desc; color price seq rojo 10.0 3 red 100 2 blue 50 1 blanco 11.0 4 create view v as select * from json_table('{"as":"b", "x":123}',"$" columns(a varchar(8) path '$.a' default '-' on empty, x int path '$.x')) x; select * from v; a x - 123 show create table v; View Create View character_set_client collation_connection v CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v` AS select `x`.`a` AS `a`,`x`.`x` AS `x` from JSON_TABLE('{"as":"b", "x":123}', '$' COLUMNS (`a` varchar(8) PATH '$.a' DEFAULT '-' ON EMPTY, `x` int(11) PATH '$.x')) `x` latin1 latin1_swedish_ci drop view v; select * from json_table('{"as":"b", "x":123}', "$" columns(a varchar(8) path '$.a' default '-' on empty null on error null on empty, x int path '$.x')) x; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'null on empty, x int path '$.x')) x' at line 2 select * from json_table('{"a":"foo","b":"bar"}', '$' columns (v varchar(20) path '$.*')) as jt; v NULL select * from json_table('{"a":"foo","b":"bar"}', '$' columns (v varchar(20) path '$.*' default '-' on error)) as jt; v - select * from json_table('{"b":"bar"}', '$' columns (v varchar(20) path '$.*' default '-' on error)) as jt; v bar create table t1 (a varchar(100)); insert into t1 values ('1'); select * from t1 as T, json_table(T.a, '$[*]' columns(color varchar(100) path '$.nonexistent', seq for ordinality)) as T; ERROR 42000: Not unique table/alias: 'T' drop table t1; prepare s from 'select * from json_table(?, \'$[*]\' columns( color varchar(100) path \'$.color\', price text path \'$.price\', seq for ordinality)) as T order by color desc; '; execute s using '[{"color": "red", "price":1}, {"color":"brown", "price":2}]'; color price seq red 1 1 brown 2 2 deallocate prepare s; create view v2 as select * from json_table('[{"co\\\\lor": "blue", "price": 50}]', '$[*]' columns( color varchar(100) path '$.co\\\\lor') ) as T; select * from v2; color blue drop view v2; explain format=json select * from json_table('[{"a": 1, "b": [11,111]}, {"a": 2, "b": [22,222]}]', '$[*]' COLUMNS( a INT PATH '$.a')) as tt; EXPLAIN { "query_block": { "select_id": 1, "table": { "table_name": "tt", "access_type": "ALL", "rows": 40, "filtered": 100, "table_function": "json_table" } } } explain select * from json_table('[{"a": 1, "b": [11,111]}, {"a": 2, "b": [22,222]}]', '$[*]' COLUMNS( a INT PATH '$.a')) as tt; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE tt ALL NULL NULL NULL NULL 40 Table function: json_table create view v1 as select * from json_table('[{"color": "blue", "price": 50}]', '$[*]' columns(color text path '$.nonexistent', seq for ordinality)) as `ALIAS NOT QUOTED`; select * from v1; color seq NULL 1 drop view v1; create view v1 as select * from json_table('[{"color": "blue", "price": 50}, {"color": "red", "price": 100}]', '$[*]' columns( color text path "$.QUOTES \" HERE \"", color1 text path '$.QUOTES " HERE "', color2 text path "$.QUOTES ' HERE '", seq for ordinality)) as T; select * from v1; color color1 color2 seq NULL NULL NULL 1 NULL NULL NULL 2 drop view v1; CREATE TABLE t1 (x INT); INSERT INTO t1 VALUES (1), (2), (3); SELECT t1.x*2 m, jt.* FROM t1, JSON_TABLE(m, '$[*]' COLUMNS (i INT PATH '$')) jt; ERROR 42S22: Unknown column 'm' in 'JSON_TABLE argument' DROP TABLE t1; select * from json_table(JS3.size, '$' columns (size INT PATH '$.size')) as JS1, json_table(JS1.size, '$' columns (size INT PATH '$.size')) as JS2, json_table(JS1.size, '$' columns (size INT PATH '$.size')) as JS3 where 1; ERROR 42S22: Unknown column 'JS3.size' in 'JSON_TABLE argument' create table t1 (json varchar(100) character set utf8); insert into t1 values ('{"value":"АБВ"}'); create table tj1 as select T.value from t1, json_table(t1.json, '$' columns (value varchar(32) PATH '$.value')) T; show create table tj1; Table Create Table tj1 CREATE TABLE `tj1` ( `value` varchar(32) CHARACTER SET utf8mb4 DEFAULT NULL ) ENGINE=MyISAM DEFAULT CHARSET=latin1 drop table t1; drop table tj1; CREATE TABLE t1(id INT, f1 JSON); INSERT INTO t1 VALUES (1, '{\"1\": 1}'), (2, '{\"1\": 2}'), (3, '{\"1\": 3}'), (4, '{\"1\": 4}'), (5, '{\"1\": 5}'), (6, '{\"1\": 6}'); ANALYZE TABLE t1; Table Op Msg_type Msg_text test.t1 analyze status Engine-independent statistics collected test.t1 analyze Warning Engine-independent statistics are not collected for column 'f1' test.t1 analyze status OK SELECT * FROM JSON_TABLE(tt3.f1, "$" COLUMNS (id FOR ORDINALITY)) AS tbl STRAIGHT_JOIN t1 AS tt3; ERROR 42S22: Unknown column 'tt3.f1' in 'JSON_TABLE argument' SELECT * FROM t1 as jj1, (SELECT tt2.* FROM t1 as tt2, JSON_TABLE(tt3.f1, "$" COLUMNS (id FOR ORDINALITY)) AS tbl STRAIGHT_JOIN t1 AS tt3 ) dt ORDER BY 1,3 LIMIT 10; ERROR 42S22: Unknown column 'tt3.f1' in 'JSON_TABLE argument' drop table t1; select collation(x) from JSON_TABLE('["abc"]', '$[*]' COLUMNS (x VARCHAR(10) CHARSET latin1 PATH '$')) tbl; collation(x) latin1_swedish_ci SELECT * FROM JSON_TABLE('{"x":1, "y":2}', _utf8mb4'$' COLUMNS (NESTED PATH _utf8mb4'$.x' COLUMNS(y INT PATH _utf8mb4'$.y' DEFAULT _utf8mb4'1' ON EMPTY DEFAULT _utf8mb4'2' ON ERROR))) jt; y 1 select * from json_table( '{"name":"t-shirt", "colors": ["yellow", "blue"],"sizes": ["small", "medium", "large"]}', '$' columns(name varchar(32) path '$.name', nested path '$.colors[*]' columns ( color varchar(32) path '$', nested path '$.sizes[*]' columns ( size varchar(32) path '$' )))) as t; name color size t-shirt yellow NULL t-shirt blue NULL SELECT x, length(x) FROM JSON_TABLE('{}', '$' COLUMNS (x VARCHAR(10) PATH '$.x' DEFAULT 'abcdefg' ON EMPTY)) jt; x length(x) abcdefg 7 select * from json_table('[{"a":"aa"}, {"b":null}]', '$[*]' columns (col1 int path '$.b' default '456' on empty)) as tt; col1 456 NULL select * from json_table('[{"a":"aa"}, {"b":true}]', '$[*]' columns (col1 int path '$.b' default '456' on empty)) as tt; col1 456 1 select * from json_table('[{"a":"aa"}, {"b":false}]', '$[*]' columns (col1 int path '$.b' default '456' on empty)) as tt; col1 456 0 select * from json_table('[{"a":"aa"}, {"b":null}]', '$[*]' columns (col1 varchar(100) path '$.b' default '456' on empty)) as tt; col1 456 NULL select * from json_table('[{"a":"aa"}, {"b":true}]', '$[*]' columns (col1 varchar(100) path '$.b' default '456' on empty)) as tt; col1 456 true select * from json_table('[{"a":"aa"}, {"b":false}]', '$[*]' columns (col1 varchar(100) path '$.b' default '456' on empty)) as tt; col1 456 false select * from json_table( '[{"a":"asd"}, {"a":123}, {"a":[]}, {"a":{}} ]', '$[*]' columns (id for ordinality, intcol int path '$.a' default '1234' on empty default '5678' on error) ) as tt; id intcol 1 0 2 123 3 5678 4 5678 Warnings: Warning 1366 Incorrect integer value: 'asd' for column ``.`(temporary)`.`intcol` at row 1 SELECT COUNT(*) FROM JSON_TABLE('[1, 2]', '$[*]' COLUMNS( I INT PATH '$')) tt; COUNT(*) 2 create table t1 (a int); insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); create table t2 (js json, b int); insert into t2 select '[1,2,3]',A.a from t1 A, t1 B; explain select * from t1, (select * from t2, json_table(t2.js, '$[*]' columns (o for ordinality)) as jt) as TT2 where 1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 10 1 SIMPLE t2 ALL NULL NULL NULL NULL 100 Using join buffer (flat, BNL join) 1 SIMPLE jt ALL NULL NULL NULL NULL 40 Table function: json_table drop table t1, t2; CREATE TABLE t1 (x INT); INSERT INTO t1 VALUES (1); CREATE TABLE t2 (j JSON); INSERT INTO t2 (j) VALUES ('[1,2,3]'); SELECT * FROM t1 RIGHT JOIN (SELECT o FROM t2, JSON_TABLE(j, '$[*]' COLUMNS (o FOR ORDINALITY)) AS jt) AS t3 ON (t3.o = t1.x); x o 1 1 NULL 2 NULL 3 DROP TABLE t1, t2; create table t20 (a int not null); create table t21 (a int not null primary key, js varchar(100)); insert into t20 values (1),(2); insert into t21 values (1, '{"a":100}'); explain select t20.a, jt1.ab from t20 left join t21 on t20.a=t21.a join JSON_TABLE(t21.js,'$' COLUMNS (ab INT PATH '$.a')) AS jt1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t20 ALL NULL NULL NULL NULL 2 1 SIMPLE t21 eq_ref PRIMARY PRIMARY 4 test.t20.a 1 1 SIMPLE jt1 ALL NULL NULL NULL NULL 40 Table function: json_table drop table t20, t21; select * from json_table( '[ {"name": "X", "colors":["blue"], "sizes": [1,2,3,4], "prices" : [10,20]}, {"name": "Y", "colors":["red"], "sizes": [10,11], "prices" : [100,200,300]} ]', '$[*]' columns ( seq0 for ordinality, name varchar(4) path '$.name', nested path '$.colors[*]' columns ( seq1 for ordinality, color text path '$' ), nested path '$.sizes[*]' columns ( seq2 for ordinality, size int path '$' ), nested path '$.prices[*]' columns ( seq3 for ordinality, price int path '$' ) ) ) as T order by seq0, name; seq0 name seq1 color seq2 size seq3 price 1 X NULL NULL NULL NULL 1 10 1 X NULL NULL NULL NULL 2 20 1 X NULL NULL 1 1 NULL NULL 1 X NULL NULL 2 2 NULL NULL 1 X NULL NULL 3 3 NULL NULL 1 X NULL NULL 4 4 NULL NULL 1 X 1 blue NULL NULL NULL NULL 2 Y NULL NULL NULL NULL 1 100 2 Y NULL NULL NULL NULL 2 200 2 Y NULL NULL NULL NULL 3 300 2 Y NULL NULL 1 10 NULL NULL 2 Y NULL NULL 2 11 NULL NULL 2 Y 1 red NULL NULL NULL NULL select * from json_table('[]', '$' COLUMNS(x FOR ORDINALITY)); ERROR HY000: Every table function must have an alias. select min(x) from json_table('[]', '$' COLUMNS(x FOR ORDINALITY)) a; min(x) 1 # # Test for the problem with # - Cross-outer-join dependency # - dead-end join prefix # - join order pruning # create table t20 (a int not null); create table t21 (a int not null primary key, js varchar(100)); insert into t20 select seq from seq_1_to_100; insert into t21 select a, '{"a":100}' from t20; create table t31(a int); create table t32(b int); insert into t31 values (1); insert into t32 values (1); explain select t20.a, jt1.ab from t20 left join t21 on t20.a=t21.a join (t31 left join (t32 join JSON_TABLE(t21.js,'$' COLUMNS (ab INT PATH '$.a')) AS jt1) on t31.a<3); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t31 system NULL NULL NULL NULL 1 1 SIMPLE t20 ALL NULL NULL NULL NULL 100 1 SIMPLE t21 eq_ref PRIMARY PRIMARY 4 test.t20.a 1 1 SIMPLE t32 ALL NULL NULL NULL NULL 1 Using where 1 SIMPLE jt1 ALL NULL NULL NULL NULL 40 Table function: json_table drop table t20,t21,t31,t32; # # MDEV-25142: JSON_TABLE: CREATE VIEW involving EXISTS PATH ends up with invalid frm # drop view if exists v1; CREATE VIEW v1 AS SELECT * FROM JSON_TABLE('[]', '$' COLUMNS (f INT EXISTS PATH '$')) a ; show create view v1; View Create View character_set_client collation_connection v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select `a`.`f` AS `f` from JSON_TABLE('[]', '$' COLUMNS (`f` int(11) EXISTS PATH '$')) `a` latin1 latin1_swedish_ci drop view v1; # # MDEV-25145: JSON_TABLE: Assertion `fixed == 1' failed in Item_load_file::val_str on 2nd execution of PS # PREPARE stmt FROM "SELECT * FROM (SELECT * FROM JSON_TABLE(LOAD_FILE('x'), '$' COLUMNS (a FOR ORDINALITY)) AS t) AS sq"; EXECUTE stmt; a EXECUTE stmt; a # # MDEV-JSON_TABLE: Server crashes in handler::print_error / hton_name upon ERROR ON EMPTY # SELECT a, b FROM JSON_TABLE('[]', '$' COLUMNS (a FOR ORDINALITY, b INT PATH '$[*]' ERROR ON EMPTY)) AS t ORDER BY a; ERROR HY000: Field 'b' can't be set for JSON_TABLE 't'. # # MDEV-25151 JSON_TABLE: Unexpectedly padded values in a PATH column. # SET @old_character_set_connection= @@character_set_connection; SET @@character_set_connection= utf8; select hex(a), b from json_table('["foo","bar"]','$[*]' columns (a char(3) path '$', b for ordinality)) t; hex(a) b 666F6F 1 626172 2 SET @@character_set_connection= @old_character_set_connection; # # MDEV-25183 JSON_TABLE: CREATE VIEW involving NESTED PATH ends up with invalid frm # CREATE VIEW v AS SELECT * FROM JSON_TABLE('{}', '$' COLUMNS(NESTED PATH '$**.*' COLUMNS(a FOR ORDINALITY), b VARCHAR(8) PATH '$')) AS jt; SHOW CREATE VIEW v; View Create View character_set_client collation_connection v CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v` AS select `jt`.`a` AS `a`,`jt`.`b` AS `b` from JSON_TABLE('{}', '$' COLUMNS (NESTED PATH '$**.*' COLUMNS (`a` FOR ORDINALITY), `b` varchar(8) PATH '$')) `jt` latin1 latin1_swedish_ci SELECT * FROM v; a b NULL NULL DROP VIEW v; # # MDEV-25178 JSON_TABLE: ASAN use-after-poison in my_fill_8bit / Json_table_column::On_response::respond # SELECT * FROM JSON_TABLE('{}', '$' COLUMNS(a CHAR(100) PATH '$' DEFAULT "0" ON ERROR)) AS jt; a 0 # # MDEV-25188 JSON_TABLE: ASAN use-after-poison in Field_long::reset / Table_function_json_table::setup or malloc(): invalid size. # SELECT * FROM JSON_TABLE(CONVERT('{"x":1}' USING utf8mb4), '$' COLUMNS(a INT PATH '$', b CHAR(64) PATH '$.*', c INT EXISTS PATH '$**.*')) AS jt; a b c NULL 1 1 # # 25192 JSON_TABLE: ASAN use-after-poison in field_conv_memcpy / Create_tmp_table::finalize upon query with derived table. # SET NAMES utf8; SELECT * FROM ( SELECT * FROM JSON_TABLE('{}', '$' COLUMNS( a BINARY(12) PATH '$.*', b VARCHAR(40) PATH '$[*]', c VARCHAR(8) PATH '$**.*')) AS jt ) AS sq; a b c NULL NULL NULL SET NAMES default; # # MDEV-25189 JSON_TABLE: Assertion `l_offset >= 0 && table->s->rec_buff_length - l_offset > 0' failed upon CREATE .. SELECT. # SET NAMES utf8; CREATE TABLE t1 AS SELECT * FROM JSON_TABLE('{}', '$' COLUMNS(a CHAR(16) PATH '$.*', b TIMESTAMP PATH '$**.*')) AS jt; DROP TABLE t1; SET NAMES default; # # MDEV-25230 SON_TABLE: CREATE VIEW with 2nd level NESTED PATH ends up with invalid frm, Assertion `m_status == DA_ERROR || m_status == DA_OK || m_status == DA_OK_BULK' failed. # CREATE VIEW v AS SELECT * FROM JSON_TABLE('{}', '$' COLUMNS(NESTED PATH '$' COLUMNS(NESTED PATH '$.*' COLUMNS(o FOR ORDINALITY)))) AS jt; SELECT * FROM v; o NULL SHOW CREATE VIEW v; View Create View character_set_client collation_connection v CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v` AS select `jt`.`o` AS `o` from JSON_TABLE('{}', '$' COLUMNS (NESTED PATH '$.*' COLUMNS (NESTED PATH '$.*' COLUMNS (`o` FOR ORDINALITY)))) `jt` latin1 latin1_swedish_ci DROP VIEW v; # # MDEV-25229 JSON_TABLE: Server crashes in hton_name upon MATCH .. AGAINST. # SELECT val, MATCH(val) AGAINST( 'MariaDB') FROM JSON_TABLE('{"db":"xx"}', '$' COLUMNS(val VARCHAR(32) PATH '$**.*')) AS jt; ERROR HY000: The storage engine JSON_TABLE function doesn't support FULLTEXT indexes # # MDEV-25138 JSON_TABLE: A space between JSON_TABLE and opening bracket causes syntax error # select * from json_table ('{}', '$' COLUMNS(x FOR ORDINALITY)) a; x 1 create table json_table(id int); insert into json_table values (1), (2), (3); select * from json_table; id 1 2 3 drop table json_table; # # MDEV-25146 JSON_TABLE: Non-descriptive + wrong error messages upon trying to store array or object. # select a from json_table('[[]]', '$' columns(a char(8) path '$' error on error)) t; ERROR HY000: Can't store an array or an object in the scalar column 'a' of JSON_TABLE 't'. show warnings; Level Code Message Error 4178 Can't store an array or an object in the scalar column 'a' of JSON_TABLE 't'. # # MDEV-JSON_TABLE: CREATE TABLE ignores NULL ON ERROR (implicit or explicit) and fails. # CREATE TABLE t1 AS SELECT * FROM JSON_TABLE('{"x":1}', '$' COLUMNS(f DATE PATH '$.*')) AS jt; Warnings: Warning 1265 Data truncated for column 'f' at row 1 SELECT * FROM t1; f 0000-00-00 DROP TABLE t1; # # MDEV-25254: JSON_TABLE: Inconsistent name resolution with right joins # CREATE TABLE t1 (a INT); SELECT * FROM t1 RIGHT JOIN JSON_TABLE(t1.a,'$' COLUMNS(o FOR ORDINALITY)) jt ON TRUE; ERROR 42S22: Unknown column 't1.a' in 'JSON_TABLE argument' CREATE VIEW v AS SELECT * FROM t1 RIGHT JOIN JSON_TABLE(t1.a,'$' COLUMNS(o FOR ORDINALITY)) jt ON TRUE; ERROR 42S22: Unknown column 't1.a' in 'JSON_TABLE argument' insert into t1 values (1),(2),(3); SELECT * FROM t1 RIGHT JOIN JSON_TABLE(t1.a,'$' COLUMNS(o FOR ORDINALITY)) jt ON TRUE; ERROR 42S22: Unknown column 't1.a' in 'JSON_TABLE argument' drop table t1; # # MDEV-25202: JSON_TABLE: Early table reference leads to unexpected result set, server crash # CREATE TABLE t1 (o INT); INSERT INTO t1 VALUES (1),(2); CREATE TABLE t2 (a INT); INSERT INTO t2 VALUES (3),(4); SELECT * FROM JSON_TABLE(a, '$' COLUMNS(o FOR ORDINALITY)) AS jt1 NATURAL JOIN t1 JOIN t2; ERROR 42S22: Unknown column 'a' in 'JSON_TABLE argument' SELECT * FROM JSON_TABLE(a, '$' COLUMNS(o FOR ORDINALITY)) AS jt1 NATURAL JOIN t1 STRAIGHT_JOIN t2; ERROR 42S22: Unknown column 'a' in 'JSON_TABLE argument' drop table t1,t2; # Now, try a JSON_TABLE that has a subquery that has an outside reference: create table t1(a int, js varchar(32)); create table t2(a varchar(100)); insert into t2 values(''); explain select * from t1 left join json_table(concat('',js), '$' columns ( color varchar(32) path '$.color') ) as JT on 1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables explain select * from t1 right join json_table(concat('',js), '$' columns ( color varchar(32) path '$.color') ) as JT on 1; ERROR 42S22: Unknown column 'js' in 'JSON_TABLE argument' explain select * from t1 left join json_table((select concat(a,js) from t2), '$' columns ( color varchar(32) path '$.color') ) as JT on 1; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 2 SUBQUERY t2 system NULL NULL NULL NULL 1 explain select * from t1 right join json_table((select concat(a,js) from t2), '$' columns ( color varchar(32) path '$.color') ) as JT on 1; ERROR 42S22: Unknown column 'js' in 'field list' drop table t1,t2; # # Now, a testcase with JSON_TABLEs inside NATURAL JOIN # create table t1 (a int, b int); create table t2 (a int, c int); select * from t1, ( t2 natural join ( json_table(JT2.d, '$' COLUMNS (d for ordinality)) as JT natural join json_table(JT.d, '$' COLUMNS (d for ordinality)) as JT2 ) ); ERROR 42S22: Unknown column 'JT2.d' in 'JSON_TABLE argument' drop table t1, t2; # # MDEV-25352: JSON_TABLE: Inconsistent name resolution and ER_VIEW_INVALID ... # (Just the testcase) # CREATE TABLE t1 (a INT, b VARCHAR(8)); INSERT INTO t1 VALUES (1,'{}'),(2,'[]'); CREATE TABLE t2 (a INT); INSERT INTO t2 VALUES (2),(3); SELECT t1.* FROM t1 NATURAL JOIN t2 RIGHT JOIN JSON_TABLE (t1.b, '$' COLUMNS(o FOR ORDINALITY)) AS jt ON (t1.a = jt.o) WHERE t1.a = 1; ERROR 42S22: Unknown column 't1.b' in 'JSON_TABLE argument' CREATE OR REPLACE VIEW v AS SELECT t1.* FROM t1 NATURAL JOIN t2 RIGHT JOIN JSON_TABLE (t1.b, '$' COLUMNS(o FOR ORDINALITY)) AS jt ON (t1.a = jt.o) WHERE t1.a = 1; ERROR 42S22: Unknown column 't1.b' in 'JSON_TABLE argument' drop table t1,t2; # # MDEV-25256: JSON_TABLE: Error ER_VIEW_INVALID upon running query via view # SELECT * FROM JSON_TABLE('[]', '$' COLUMNS(a TEXT PATH '$[*]')) AS jt1 RIGHT JOIN JSON_TABLE(jt1.a, '$' COLUMNS(o2 FOR ORDINALITY)) AS jt2 ON(1) RIGHT JOIN JSON_TABLE('[]', '$' COLUMNS(o3 FOR ORDINALITY)) AS jt3 ON(1) WHERE 0; ERROR 42S22: Unknown column 'jt1.a' in 'JSON_TABLE argument' # # MDEV-25346: JSON_TABLE: Server crashes in Item_field::fix_outer_field upon subquery with unknown column # CREATE TABLE t1 (a INT); CREATE TABLE t2 (b INT); SELECT * FROM ( SELECT * FROM t1 JOIN t2 ON (b IN(SELECT x FROM (SELECT 1 AS c) AS sq1))) AS sq2; ERROR 42S22: Unknown column 'x' in 'field list' DROP TABLE t1, t2; # # Another testcase # create table t1 (item_name varchar(32), item_props varchar(1024)); insert into t1 values ('Jeans', '{"color": ["green", "brown"], "price": 50}'); insert into t1 values ('Shirt', '{"color": ["blue", "white"], "price": 20}'); insert into t1 values ('Jeans', '{"color": ["black"], "price": 60}'); insert into t1 values ('Jeans', '{"color": ["gray"], "price": 60}'); insert into t1 values ('Laptop', '{"color": ["black"], "price": 1000}'); insert into t1 values ('Shirt', '{"color": ["black"], "price": 20}'); select t.item_name, jt.* from (select t1.item_name, concat( concat( concat( "{\"color\": ", concat( concat("[\"", group_concat( jt.color separator "\", \"") ), "\"]") ),',' ), concat(concat("\"price\": ",jt.price),'}') ) as item_props from t1, json_table( t1.item_props, '$' columns ( nested path '$.color[*]' columns (color varchar(32) path '$'), price int path '$.price') ) as jt group by t1.item_name, jt.price ) as t, json_table(t.item_props, '$' columns ( nested path '$.color[*]' columns (color varchar(32) path '$'), price int path '$.price') ) as jt order by t.item_name, jt.price, jt.color; item_name color price Jeans brown 50 Jeans green 50 Jeans black 60 Jeans gray 60 Laptop black 1000 Shirt black 20 Shirt blue 20 Shirt white 20 drop table t1; # # MDEV-25380: JSON_TABLE: Assertion `join->best_read < double(1.797...) fails # CREATE TABLE t1 (a INT, b TEXT); INSERT INTO t1 VALUES (1,'{}'),(2,'[]'); explain SELECT * FROM t1 WHERE EXISTS(SELECT * FROM JSON_TABLE(b, '$' COLUMNS(o FOR ORDINALITY)) AS jt WHERE jt.o = t1.a); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 1 PRIMARY jt ALL NULL NULL NULL NULL 40 Table function: json_table; Using where; FirstMatch(t1) drop table t1; # # MDEV-25381: JSON_TABLE: ER_WRONG_OUTER_JOIN upon query with LEFT and RIGHT joins and view # CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1),(2); CREATE TABLE t2 (b INT, c TEXT); INSERT INTO t2 VALUES (1,'{}'),(2,'[]'); CREATE VIEW v2 AS SELECT * FROM t2; SELECT * FROM t1 RIGHT JOIN t2 AS tt LEFT JOIN JSON_TABLE(tt.c, '$' COLUMNS(o FOR ORDINALITY)) AS jt ON tt.b = jt.o ON t1.a = tt.b; a b c o 1 1 {} 1 2 2 [] NULL SELECT * FROM t1 RIGHT JOIN v2 AS tt LEFT JOIN JSON_TABLE(tt.c, '$' COLUMNS(o FOR ORDINALITY)) AS jt ON tt.b = jt.o ON t1.a = tt.b; a b c o 1 1 {} 1 2 2 [] NULL SELECT * FROM t1 RIGHT JOIN v2 AS tt LEFT JOIN JSON_TABLE(CONCAT(tt.c,''), '$' COLUMNS(o FOR ORDINALITY)) AS jt ON tt.b = jt.o ON t1.a = tt.b; a b c o 1 1 {} 1 2 2 [] NULL prepare s from "SELECT * FROM t1 RIGHT JOIN v2 AS tt LEFT JOIN JSON_TABLE(CONCAT(tt.c,''), '$' COLUMNS(o FOR ORDINALITY)) AS jt ON tt.b = jt.o ON t1.a = tt.b"; execute s; a b c o 1 1 {} 1 2 2 [] NULL execute s; a b c o 1 1 {} 1 2 2 [] NULL DROP VIEW v2; DROP TABLE t1, t2; # # MDEV-25259 JSON_TABLE: Illegal mix of collations upon executing query with combination of charsets via view. # CREATE VIEW v AS SELECT * FROM JSON_TABLE(CONVERT('[]' USING dec8), '$' COLUMNS(b VARCHAR(8) CHARSET utf8 PATH '$')) AS jt2 WHERE (CONVERT('[]' USING cp1256) = b); SELECT * FROM v; b DROP VIEW v; # # MDEV-25397: JSON_TABLE: Unexpected ER_MIX_OF_GROUP_FUNC_AND_FIELDS upon query with JOIN # set @save_sql_mode= @@sql_mode; SET sql_mode='ONLY_FULL_GROUP_BY'; CREATE TABLE t1 (a TEXT); SELECT SUM(o) FROM t1 JOIN JSON_TABLE(t1.a, '$' COLUMNS(o FOR ORDINALITY)) jt; SUM(o) NULL set sql_mode=@save_sql_mode; drop table t1; # # MDEV-25379 JSON_TABLE: ERROR ON clauses are ignored if a column is not on select list. # SELECT * FROM JSON_TABLE ('{}', '$' COLUMNS(a INT PATH '$.*' ERROR ON EMPTY, o FOR ORDINALITY)) AS jt; ERROR HY000: Field 'a' can't be set for JSON_TABLE 'jt'. SELECT o FROM JSON_TABLE ('{}', '$' COLUMNS(a INT PATH '$.*' ERROR ON EMPTY, o FOR ORDINALITY)) AS jt; ERROR HY000: Field 'a' can't be set for JSON_TABLE 'jt'. SELECT COUNT(*) FROM JSON_TABLE ('{}', '$' COLUMNS(a INT PATH '$.*' ERROR ON EMPTY, o FOR ORDINALITY)) AS jt; ERROR HY000: Field 'a' can't be set for JSON_TABLE 'jt'. # # MDEV-25408 JSON_TABLE: AddressSanitizer CHECK failed in Binary_string::realloc_raw. # SELECT x, COUNT(*) FROM JSON_TABLE( '{}', '$' COLUMNS( a BIT(14) PATH '$', b CHAR(16) PATH '$', c INT PATH '$[0]', d INT PATH '$[1]', e INT PATH '$[2]', f INT PATH '$[3]', g INT PATH '$[4]', h INT PATH '$[5]', i INT PATH '$[6]', j INT PATH '$[7]', x TEXT PATH '$[9]')) AS jt GROUP BY x; x COUNT(*) NULL 1 # # MDEV-25408 JSON_TABLE: AddressSanitizer CHECK failed in Binary_string::realloc_raw. # SELECT * FROM JSON_TABLE('{}', '$' COLUMNS( a TEXT EXISTS PATH '$', b VARCHAR(40) PATH '$', c BIT(60) PATH '$', d VARCHAR(60) PATH '$', e BIT(62) PATH '$', f FOR ORDINALITY, g INT PATH '$', h VARCHAR(36) PATH '$', i DATE PATH '$', j CHAR(4) PATH '$' )) AS jt; a b c d e f g h i j 1 NULL NULL NULL NULL 1 NULL NULL NULL NULL # # MDEV-25373 JSON_TABLE: Illegal mix of collations upon executing PS once, or SP/function twice. # SELECT * FROM JSON_TABLE (CONVERT('[1,2]' USING koi8u), '$[*]' COLUMNS(a CHAR(8) PATH '$')) AS jt1 NATURAL JOIN JSON_TABLE (CONVERT('[2,3]' USING eucjpms), '$[*]' COLUMNS(a CHAR(8) PATH '$')) AS jt2; a 2 PREPARE stmt1 FROM " SELECT * FROM JSON_TABLE (CONVERT('[1,2]' USING koi8u), '$[*]' COLUMNS(a CHAR(8) PATH '$')) AS jt1 NATURAL JOIN JSON_TABLE (CONVERT('[2,3]' USING eucjpms), '$[*]' COLUMNS(a CHAR(8) PATH '$')) AS jt2; "; EXECUTE stmt1; a 2 DEALLOCATE PREPARE stmt1; # # MDEV-25149 JSON_TABLE: Inconsistency in implicit data type conversion. # select * from json_table( '[{"a":"asd"}, {"a":123}, {"a":[]}, {"a":{}} ]', '$[*]' columns ( id for ordinality, intcol int path '$.a' default '1234' on empty default '5678' on error) ) as tt; id intcol 1 0 2 123 3 5678 4 5678 Warnings: Warning 1366 Incorrect integer value: 'asd' for column ``.`(temporary)`.`intcol` at row 1 # # MDEV-25377 JSON_TABLE: Wrong value with implicit conversion. # select * from json_table('{"a":"foo", "b":1, "c":1000}', '$.*' columns(converted tinyint path '$', original text path '$')) as jt; converted original 0 foo 1 1 127 1000 Warnings: Warning 1366 Incorrect integer value: 'foo' for column ``.`(temporary)`.`converted` at row 1 Warning 1264 Out of range value for column 'converted' at row 3 select * from json_table('{"a":"foo", "b":1, "c":1000}', '$.*' columns(converted tinyint path '$', original text path '$')) as jt order by converted; converted original 0 foo 1 1 127 1000 Warnings: Warning 1366 Incorrect integer value: 'foo' for column ``.`(temporary)`.`converted` at row 1 Warning 1264 Out of range value for column 'converted' at row 1 Warning 1366 Incorrect integer value: 'foo' for column ``.`(temporary)`.`converted` at row 1 Warning 1264 Out of range value for column 'converted' at row 3 select * from json_table('{"a":"foo", "b":1, "c":1000}', '$.*' columns(converted tinyint path '$', original text path '$')) as jt order by original; converted original 1 1 127 1000 0 foo Warnings: Warning 1264 Out of range value for column 'converted' at row 2 Warning 1366 Incorrect integer value: 'foo' for column ``.`(temporary)`.`converted` at row 3 select * from json_table('[{"color": "blue", "price": { "high": 10, "low": 5}}, {"color": "white", "price": "pretty low"}, {"color": "yellow", "price": 256.20}, {"color": "red", "price": { "high": 20, "low": 8}}]', '$[*]' columns(color varchar(100) path '$.color', price json path '$.price' ) ) as T; color price blue { "high": 10, "low": 5} white "pretty low" yellow 256.20 red { "high": 20, "low": 8} select * from json_table('{"foo": null}', '$' columns( jscol json path '$.foo')) as T; jscol null # # End of 10.6 tests #