mysql - Spring Dao says bad SQL grammar - 语法错误

Question

org.springframework.jdbc.BadSqlGrammarException: PreparedStatementCallback; bad SQL grammar [DELETE model_state_history FROM model_state_history INNER JOIN model ON model_state_history.model_id = model.id WHERE model.package_id = ?]; nested exception is org.h2.jdbc.JdbcSQLException: Syntax error in SQL statement "DELETE model_state_history FROM[*] model_state_history INNER JOIN model ON model_state_history.model_ID = model.ID WHERE model.PACKAGE_ID = ? "; SQL statement:

它在输出中抛出上面的内容。在我看来，我没有看到语法错误。我正在使用 MySQL 数据库。上面的SQL语法有没有明显的错误？

使用 DELETE FROM 语法也会给出语法错误。

org.springframework.jdbc.BadSqlGrammarException: PreparedStatementCallback; bad SQL grammar [DELETE FROM model_state_history INNER JOIN model ON model_state_history.model_id = model.id WHERE model.package_id = ?]; nested exception is org.h2.jdbc.JdbcSQLException: Syntax error in SQL statement "DELETE FROM model_STATE_HISTORY INNER[*] JOIN model ON model_STATE_HISTORY.model_ID = model.ID WHERE model.PACKAGE_ID = ? "; SQL statement: DELETE FROM model_state_history INNER JOIN model ON model_state_history.model_id = model.id WHERE model.package_id = ? [42000-176]

这是正在运行的代码片段

  @Transactional
  private int deleteAllModels(Long packageId) throws DataAccessException {
    return new NamedParameterJdbcTemplate(dataSource).update(
        "DELETE FROM model_state_history INNER JOIN model ON model_state_history.version_id = model.id WHERE model.package_id = :package_id",
        ImmutableMap.of("package_id", packageId));

Answer 1

再三考虑，我认为您可能对 JOIN 语法有疑问。你在写

DELETE FROM ... INNER JOIN ... ON msh.version_id = m.id WHERE m.package_id = :package_id

我认为 WHERE 应该是 AND，所以查询会变成:

"DELETE FROM model_state_history INNER JOIN model 
 ON model_state_history.version_id = model.id AND model.package_id = :package_id"

因为 WHERE 引用回 DELETE 语句，它的“范围”中没有 model 表。

干杯，