DROP DATABASE IF EXISTS json_depth_db;
CREATE DATABASE json_depth_db;
USE json_depth_db;
# ----------------------------------------------------------------------
# Test of JSON_DEPTH function.
# ----------------------------------------------------------------------
CREATE TABLE t1(l LONGTEXT) ENGINE = columnstore;
# Return NULL
INSERT INTO t1 VALUES(NULL);
SELECT JSON_DEPTH(l) FROM t1;
JSON_DEPTH(l)
NULL
# Return 1
TRUNCATE t1;
INSERT INTO t1 VALUES('{}');
INSERT INTO t1 VALUES('[]');
INSERT INTO t1 VALUES('"abc"');
SELECT JSON_DEPTH(l) FROM t1;
JSON_DEPTH(l)
1
1
1
# Error ER_INVALID_TYPE_FOR_JSON
CREATE TABLE t2(i int) ENGINE=columnstore;
INSERT INTO t2 VALUES(1);
SELECT JSON_DEPTH(i) FROM t2;
JSON_DEPTH(i)
1
DROP TABLE t2;
# Error ER_INVALID_JSON_TEXT_IN_PARAM
TRUNCATE t1;
INSERT INTO t1 VALUES('abc');
INSERT INTO t1 VALUES('[ "a", true, "b" , { "e" : false }, "c" , null');
SELECT JSON_DEPTH(l) FROM t1;
JSON_DEPTH(l)
NULL
NULL
# Return 2
TRUNCATE t1;
INSERT INTO t1 VALUES('{ "a" : true, "b" : false, "c" : null }');
INSERT INTO t1 VALUES('[ "a", true, "b" , false, "c" , null ]');
INSERT INTO t1 VALUES('{ "a" : true, "b" : {}, "c" : null }');
INSERT INTO t1 VALUES('[ "a", true, "b" , {}, "c" , null ]');
SELECT JSON_DEPTH(l) FROM t1;
JSON_DEPTH(l)
2
2
2
2
# Return 3
TRUNCATE t1;
INSERT INTO t1 VALUES('{ "a" : true, "b" : { "e" : false }, "c" : null }');
SELECT JSON_DEPTH(l) FROM t1;
JSON_DEPTH(l)
3
DROP TABLE t1;
DROP DATABASE json_depth_db;