在SELECT语句中使用JOIN的帮助

我想加入TABLE_1和TABLE_2，我需要在我的HTML表格中使用这些字段中的每一个。我收到有关我的FROM子句的错误，但我相信还有更多错误。在SELECT语句中使用JOIN的帮助

      "SELECT " 
          + "TABLE_1.id, " 
          + "TABLE_1.date, " 
          + "TABLE_1.location, " 
          + "TABLE_1.name, " 
          + "TABLE_1.status " 
          + "TABLE_2.date, " 
          + "TABLE_2.location, " 
          + "TABLE_2.name, " 
          + "TABLE_2.type " 
         + "FROM SCHEMA_1.TABLE_1 JOIN SCHEMA_1.TABLE_2 " 
         + "WHERE TABLE_1.id = TABLE_2.id " 
         + "AND add_user = ?");

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2011-04-04 Dan

当您使用JOIN语句你需要根据实际情况加入它所以你使用ON myField1 = myField2。 WHERE用于过滤数据。 – JonH 2011-04-04 20:18:08

试试这个，而是：

     "SELECT " 
         + "TABLE_1.id, " 
         + "TABLE_1.date, " 
         + "TABLE_1.location, " 
         + "TABLE_1.name, " 
         + "TABLE_1.status " 
         + "TABLE_2.date, " 
         + "TABLE_2.location, " 
         + "TABLE_2.name, " 
         + "TABLE_2.type " 
        + "FROM " 
        + " SCHEMA_1.TABLE_1 JOIN SCHEMA_1.TABLE_2 " 
        + " ON TABLE_1.ID = TABLE_2.ID" 
        + "WHERE add_user = ?");

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2011-04-04 20:15:08 JosephStyons

更改WHERE TABLE_1.id = TABLE_2.id AND add_user = ?为ON TABLE_1.id = TABLE_2.id WHERE add_user = ?

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2011-04-04 20:13:01 Lamak

由我愚蠢的错误，谢谢！自从我使用SQL以来，它一直是永恒的。 – Dan 2011-04-04 20:17:48

嗯，我在我的代码中做了这个改变，而且我仍然收到错误：ORA-00923：FROM keyword not found where expected。这可能源于其他吗？ – Dan 2011-04-04 20:31:36

由ON连接表不是哪里

http://www.w3schools.com/sql/sql_join_inner.asp

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2011-04-04 20:14:24 Spooks

在SELECT语句中使用JOIN的帮助

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