[英]SQL statement working in tool but not in Java using JDBC
我正在使用下面的 SQL 查询从数据库中获取一些数据。 我使用的 DBMS 是 H2,它是一个原生的 Java 实现。 尽管我可以使用 H2 工具检索所述数据,但当我将其用作 JAVA 中的PreparedStatement
时,它给了我以下错误:
"; 预期 ")"; SQL 语句: ...
SELECT * FROM (
SELECT temp.*, ROW_NUMBER() OVER (PARTITION BY horseid ORDER BY updated desc) as num
FROM(
select horseid, name, breed, min_speed, max_speed, updated from horsehistory
UNION
select id, name, breed, min_speed, max_speed, updated from horse
) as temp
WHERE updated<? AND horseid in ?
)
WHERE num = 1;
我试过使用换行符,带行分隔符的 stringbuilder 无济于事。
StringBuilder sb= new StringBuilder();
appendString(sb, "SELECT * FROM (");
appendString(sb, "SELECT temp.*, ROW_NUMBER() OVER (PARTITION BY horseid ORDER BY updated desc) AS num");
appendString(sb, "FROM(");
appendString(sb, "SELECT horseid, name, breed, min_speed, max_speed, updated FROM horsehistory");
appendString(sb, "UNION");
appendString(sb, "SELECT id, name, breed, min_speed, max_speed, updated FROM horse");
appendString(sb, ") AS temp");
appendString(sb, "WHERE updated < ? AND horseid IN ?");
appendString(sb, ")");
appendString(sb, "WHERE num = 1;");
String sql=sb.toString();
appendString 函数只是将换行符附加到字符串。 我在一个准备好的语句中使用它
我究竟做错了什么?
编辑:这是有问题的完整错误
Syntax error in SQL statement "SELECT * FROM ( SELECT TEMP.*, ROW_NUMBER() OVER (PARTITION[*] BY HORSEID ORDER BY UPDATED DESC) AS NUM FROM ( SELECT HORSEID, NAME, BREED, MIN_SPEED, MAX_SPEED, UPDATED FROM HORSEHISTORY UNION SELECT ID, NAME, BREED, MIN_SPEED, MAX_SPEED, UPDATED FROM HORSE ) AS TEMP WHERE UPDATED < ? AND HORSEID IN (?) ) WHERE NUM = 1 "; expected ")";
PARTITION 后有一个 [*]。 这是否意味着错误发生在那里?
你必须包装你的数组参数?
在括号内:
... horseid IN (?) ...
啊,您正在使用H2
,感谢您添加该标志。 H2
似乎不支持PARTITION
。 看这里
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