Question

我正在尝试使用Doctrine DBAL在Oracle数据库上执行以下查询。我之前执行过其他查询，因此不是连接问题。问题源于试图逃避保留字Number。我需要选择一个列Number，以便以后的逻辑。查询的简化工作版本如下：

SELECT instructor.SecNum AS "Number"
      FROM (
           SELECT dbA.ID,
                  dbA.ClsNumber as SecNum,
                  dbA.CrsCatlgNbr,
                  ROW_Number() OVER (PARTITION BY dbA.ClsNumber ORDER BY dbA.CrsCatlgNbr) AS rn
           FROM dbA
           WHERE (dbA.SubCd = '5')
           AND (dbA.ID IS NOT NULL)
           ) instructor,
           (
            SELECT dbB.SecNum
            FROM dbB
            WHERE (dbB.SubCd = '5')
           ) student
      WHERE (instructor.rn = 1)
      AND (instructor.SecNum = student.SecNum);

PHP代码如下

// set up connection stuff and relevant variables
$sectionTable = array();
$dss1prdDatabase->executeQuery(
"SELECT instructor.SecNum AS \"Number\"
      FROM (
           SELECT dbA.ID
                 dbA.ClsNumber as SecNum
                 dbA.CrsCatlgNbr
                 ROW_Number() OVER (PARTITION BY dbA.ClsNumber ORDER BY dbA   CrsCatlgNbr) AS rn
           FROM dbA
           WHERE (dbA.SubCd = '5')
           AND (dbA.ID IS NOT NULL)
           ) instructor,
           (
            SELECT dbB.SecNum
            FROM dbB
            WHERE (dbB.SubCd = '5')
           ) student
      WHERE (instructor.rn = 1)
      AND (instructor.SecNum = student.SecNum);", $sectionTable);

当我这样做时，我收到ORA-00911: invalid character错误。

我还尝试首先准备语句，然后将转义的列名称绑定到查询：

// ...
$ESCAPEDNUMBER = '\"Number\"';
$sql = "SELECT instructor.SecNum AS ?
      FROM (
           SELECT dbA.ID
                 dbA.ClsNumber as SecNum
                 dbA.CrsCatlgNbr
                 ROW_Number() OVER (PARTITION BY dbA.ClsNumber ORDER BY dbA   CrsCatlgNbr) AS rn
           FROM dbA
           WHERE (dbA.SubCd = '5')
           AND (dbA.ID IS NOT NULL)
           ) instructor,
           (
            SELECT dbB.SecNum
            FROM dbB
            WHERE (dbB.SubCd = '5')
           ) student
      WHERE (instructor.rn = 1)
      AND (instructor.SecNum = student.SecNum);"
$stmt = $dbalDatabaseConnection->prepare($sql);
$stmt->bindvalue(1, $ESCAPEDNUMBER);
$stmt->execute($sectionTable);

但是这给了我一个不同的错误：ORA-00923: FROM keyword not found where expected.

当我说ORA-00923

时，也会发现$ESCAPEDNUMBER = addslashes('"Number"');错误

我不知道问题是什么。有什么想法吗？

我的问题再次是如何使用Doctrine DBAL在php查询中正确转义oracle保留字。我使用引号是因为在查询中需要Oracle引号，否则您将获得ORA-00923: FROM keyword not found where expected" error.

可以找到有关DBAL的相关文档here 而且

Answer 1

知道了。问题是查询结尾处的分号。这在控制台中运行良好，但在使用DBAL运行时显然会提供ORA-00911: invalid character。去图......

修正查询：

// set up connection stuff and relevant variables
$sectionTable = array();
$dss1prdDatabase->executeQuery(
"SELECT instructor.SecNum AS \"Number\"
      FROM (
           SELECT dbA.ID
                 dbA.ClsNumber as SecNum
                 dbA.CrsCatlgNbr
                 ROW_Number() OVER (PARTITION BY dbA.ClsNumber ORDER BY dbA   CrsCatlgNbr) AS rn
           FROM dbA
           WHERE (dbA.SubCd = '5')
           AND (dbA.ID IS NOT NULL)
           ) instructor,
           (
            SELECT dbB.SecNum
            FROM dbB
            WHERE (dbB.SubCd = '5')
           ) student
      WHERE (instructor.rn = 1)
      AND (instructor.SecNum = student.SecNum)", $sectionTable);

在使用Doctrine DBAL在Oracle数据库上执行查询时，如何逃避oracle保留关键字？

1 个答案: