无法识别表达式规范中的“SELECT”“DISTINCT”“（”附近的输入 -Hive

【问题标题】：cannot recognize input near 'SELECT' 'DISTINCT' '(' in expression specification -Hive无法识别表达式规范中的“SELECT”“DISTINCT”“（”附近的输入 -Hive
【发布时间】：2023-03-29 19:00:02
【问题描述】：

尝试在 hive 中执行以下查询。抛出异常无法识别表达式规范中 'SELECT' 'DISTINCT' '(' 附近的输入。感谢任何帮助。

SELECT DISTINCT (FISCAL_QUARTER_START_DATE)
      FROM TEST_STAGE.TEST_TABLE
     WHERE     FISCAL_YEAR_ID =
                  (SELECT FISCAL_YEAR_ID
                     FROM TEST_STAGE.TEST_TABLE
                    WHERE CALENDAR_DATE = FROM_UNIXTIME (UNIX_TIMESTAMP ()))
           AND SUBSTR (FISCAL_QUARTER_NAME, 0, 2) =
                  (SELECT SUBSTR (FISCAL_QUARTER_NAME, 0, 2)
                     FROM TEST_STAGE.TEST_TABLE
                    WHERE CALENDAR_DATE = FROM_UNIXTIME (UNIX_TIMESTAMP ()))

谢谢

【问题讨论】：

标签： hive hiveql

【解决方案1】：

对子查询使用正确的表别名和IN 子句而不是=。

SELECT DISTINCT (t1.FISCAL_QUARTER_START_DATE)
FROM TEST_STAGE.TEST_TABLE t1
WHERE t1.FISCAL_YEAR_ID IN (
        SELECT t2.FISCAL_YEAR_ID
        FROM TEST_STAGE.TEST_TABLE t2
        WHERE t2.CALENDAR_DATE = FROM_UNIXTIME(UNIX_TIMESTAMP())
        )
    AND SUBSTR(t1.FISCAL_QUARTER_NAME, 0, 2) IN (
        SELECT SUBSTR(t3.FISCAL_QUARTER_NAME, 0, 2)
        FROM TEST_STAGE.TEST_TABLE t3
        WHERE t3.CALENDAR_DATE = FROM_UNIXTIME(UNIX_TIMESTAMP())
        );

我认为您的查询是等效的，可以使用EXISTS 转换为单个子查询。

SELECT DISTINCT t1.FISCAL_QUARTER_START_DATE
FROM TEST_STAGE.TEST_TABLE t1
WHERE EXISTS (
        SELECT 1
        FROM TEST_STAGE.TEST_TABLE t2
        WHERE SUBSTR(t1.FISCAL_QUARTER_NAME, 0, 2) = SUBSTR(t2.FISCAL_QUARTER_NAME, 0, 2)
            AND t1.FISCAL_YEAR_ID = t2.FISCAL_YEAR_ID
            AND t1.CALENDAR_DATE = FROM_UNIXTIME(UNIX_TIMESTAMP())
        );

【讨论】：