Question

在数据库整理为latin1_general_ci的MySQL 5.1上，我UPDATE时出现此异常：

Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.2.0.v20110202-r8913): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Illegal mix of collations (latin1_general_ci,IMPLICIT) and (latin1_swedish_ci,IMPLICIT) for operation '='
Error Code: 1267
Call: UPDATE medicaltestdetails, TL_medicaltestdetails SET medicaltestdetails.Status = TL_medicaltestdetails.Status WHERE medicaltestdetails.TestDate = TL_medicaltestdetails.TestDate AND medicaltestdetails.TestSerial = TL_medicaltestdetails.TestSerial AND medicaltestdetails.ConsultantId = TL_medicaltestdetails.ConsultantId AND medicaltestdetails.TestTime = TL_medicaltestdetails.TestTime
Query: UpdateAllQuery(referenceClass=Medicaltestdetails sql="CREATE TEMPORARY TABLE IF NOT EXISTS TL_medicaltestdetails (Chg BIGINT, Remarks VARCHAR(255), Result VARCHAR(255), Status VARCHAR(255), TestDesc VARCHAR(255), TestType VARCHAR(255), TestDate DATE NOT NULL, TestSerial VARCHAR(255) NOT NULL, ConsultantId VARCHAR(255) NOT NULL, TestTime INTEGER NOT NULL, PRIMARY KEY (TestDate, TestSerial, ConsultantId, TestTime))")

请帮我解决这个问题。

Answer 1

您可能已添加＆＃39;＆amp; characterEncoding = UTF-8＆＃39;到我的JDBC连接字符串。如果

mysql> show variables like "collation_database";
    +--------------------+-----------------+
    | Variable_name      | Value           |
    +--------------------+-----------------+
    | collation_database | utf8_general_ci |
    +--------------------+-----------------+

不是那样的和

mysql> show table status;
    +--------------+-----------------+
    | Name         | Collation       |
    +--------------+-----------------+
    | my_view      | NULL            |
    | my_table     | utf8_unicode_ci |
    ...

它不是那样的

做的：

ALTER DATABASE mydb DEFAULT COLLATE utf8_unicode_ci;

并更改字段的编码：

ALTER TABLE my_table MODIFY COLUMN my_column column_type CHARACTER SET utf8 COLLATE utf8_unicode_ci [NOT NULL];

或更改表格的编码：

ALTER TABLE my_table CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci

侨

卢卡

ejb中非法混合的排序规则

1 个答案: