cratedB是否允许具有上限或骆驼盒属性名称的对象列?我有这样的桌子:
create table objecttest(
age integer,
name string,
attrs object
);
使用插入语句:
insert into objecttest (age,name,attrs) values (30,'harry',{address = '123 street', city = 'city', IPaddress = '10.0.0.1'});
...崩溃导致:
cr> select * from objecttest;
+-----+---------------------------------------------------------------------+--------+
| age | attrs | name |
+-----+---------------------------------------------------------------------+--------+
| 30 | {"address": "123 street", "city": "city", "ipaddress": "10.0.0.1"} | harry |
+-----+---------------------------------------------------------------------+--------+
SELECT 1 row in set (0.005 sec)
...在CratedB的JDBC驱动程序中导致:
cr> select * from objecttest;
+-----+---------------------------------------------------------------------+-------+
| age | attrs | name |
+-----+---------------------------------------------------------------------+-------+
| 30 | {"address": "123 street", "city": "city", "ipaddress": "10.0.0.1"} | harry |
| 30 | {"IPaddress": "10.0.0.1", "address": "123 street", "city": "city"} | harry |
+-----+---------------------------------------------------------------------+-------+
SELECT 2 rows in set (0.004 sec)
iPaddress现在的拼写不同。这是Crate-JDBC中的错误吗?
无引号,cratedB将所有列名称视为不敏感的(较低案例),因此应引用任何列以保留壳体。另一方面,CratedB的JDBC驱动程序将自动引用列名称,这意味着在那里执行的插入语句将按照代码中的书面形式使用。崩溃/admin ui/...发行时将使用保留套管:
insert into objecttest (age,name,attrs) values (30,'harry',{address = '123 street', city = 'city', "IPaddress" = '10.0.0.1'});
您将获得相同的结果,就好像用Crate-jdbc插入。
更多关于此处结构的信息。
欢呼!