ORA-00932: inconsistent datatypes: expected - got NCLOB

时间：2021-01-28 11:38:55 收藏：0 阅读：0

    SELECT
        COUNT( * ) AS COUNT_APPROVAL
    FROM
        (
        SELECT
            SUBSTR(
                pqg.SUM_QUARTERLY_GOAL,
                INSTR( pqg.SUM_QUARTERLY_GOAL, ‘"‘, - 1, 2 ) + 1,
                (
                    INSTR( pqg.SUM_QUARTERLY_GOAL, ‘"‘, - 1, 1 ) - 2 - INSTR( pqg.SUM_QUARTERLY_GOAL, ‘"‘, - 1, 2 ) + 1
                )
            ) AS APPROVAL
        FROM
            PROJECT_VIEW pv
            LEFT JOIN PROJECT_QUARTERLY_GOAL pqg ON pqg.PROJECT_CONTENT_ID = pv.PROJECT_CONTENT_ID
        )
    WHERE
        APPROVAL = ‘第五次新建测试20200107‘;

报错

> ORA-00932: inconsistent datatypes: expected - got NCLOB

由于APPROVAL的类型为NCLOB，所以需要不可以直接和类型varchar的值做比较，需要将APPROVAL类型转换为varchar

修改后sql：

    SELECT
        COUNT( * ) AS COUNT_APPROVAL
    FROM
        (
        SELECT
            SUBSTR(
                pqg.SUM_QUARTERLY_GOAL,
                INSTR( pqg.SUM_QUARTERLY_GOAL, ‘"‘, - 1, 2 ) + 1,
                (
                    INSTR( pqg.SUM_QUARTERLY_GOAL, ‘"‘, - 1, 1 ) - 2 - INSTR( pqg.SUM_QUARTERLY_GOAL, ‘"‘, - 1, 2 ) + 1
                )
            ) AS APPROVAL
        FROM
            PROJECT_VIEW pv
            LEFT JOIN PROJECT_QUARTERLY_GOAL pqg ON pqg.PROJECT_CONTENT_ID = pv.PROJECT_CONTENT_ID
        )
    WHERE
    TO_CHAR( APPROVAL ) = ‘第五次新建测试20200107‘;