我正在使用spring,它是用于数据库连接的JdbcTemplate,我正在尝试为我的主键列自动生成一个键。我也在使用HSQLDB
。该表看起来像:
CREATE TABLE IF NOT EXISTS Customers (
cid BIGINT GENERATED BY DEFAULT AS PRIMARY KEY,
name VARCHAR(255) NOT NULL,
...
);
我的Dao对象中的代码如下所示:
Map<String, Object> values = new HashMap<String, Object>();
values.put("name", customer.getName());
// NOT putting the cid
...
SimpleJdbcInsert insert = new SimpleJdbcInsert(jdbc).withTableName(
"CUSTOMERS").usingGeneratedKeyColumns("CID");
Long key = (Long) insert.executeAndReturnKey(values);
正如您所看到的,我没有手动输入密钥,我希望usingGeneratedKeyColumns
方法会自动为我生成密钥。无论如何,我在执行executeAndReturnKey
后出现此错误:
org.springframework.dao.DataIntegrityViolationException: PreparedStatementCallback; SQL []; integrity constraint violation: NOT NULL check constraint; SYS_PK_10094 table: CUSTOMERS column: CID; nested exception is java.sql.SQLIntegrityConstraintViolationException: integrity constraint violation: NOT NULL check constraint; SYS_PK_10094 table: CUSTOMERS column: CID
答案 0 :(得分:1)
问题是HSQLDB
自动生成密钥的语法略有不同。您需要将其定义为IDENTITY
,然后定义为PRIMARY KEY
:
CREATE TABLE IF NOT EXISTS Customers (
cid BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
name VARCHAR(255) NOT NULL,
...
);