替代代码np.diag(h_hat.flatten())

如果您想用NumPy实现与np.diag(h_hat.flatten())相同的功能，可以使用以下代码：

np.zeros((h_hat.size, h_hat.size)).fill(np.diag(h_hat.flatten()))

这将创建一个大小为(h_hat.size, h_hat.size)的零矩阵，并用np.diag(h_hat.flatten())中的对角线值填充它。

相关问题

替代代码np.zeros((h_hat.size, h_hat.size)).fill(np.diag(h_hat.flatten()))

可以使用以下代码替代：

np.diag(h_hat.flatten()) * np.zeros((h_hat.size, h_hat.size))

或者直接使用以下代码：

np.diag(h_hat.flatten())

因为对角矩阵只有对角线上有非零元素，其他位置都是0，所以直接用`np.diag()`函数生成对角矩阵即可。

select distinct a.EMPI_ID, a.PATIENT_NO, a.MR_NO, a.PAT_NAME, a.PAT_SEX, a.PAT_AGE, a.PAT_PHONE_NO, b.DIAG_RESULT, a.ADMIT_DATE, a.DISCHARGE_DEPT_NAME, a.ATTEND_DR from BASIC_INFORMATION a join PA_DIAG b on a.MZZY_SERIES_NO=b.MZZY_SERIES_NO join EXAM_DESC_RESULT_CODE c on a.MZZY_SERIES_NO=c.MZZY_SERIES_NO join DRUG_INFO d on a.MZZY_SERIES_NO=d.MZZY_SERIES_NO join EMR_CONTENT e on a.MZZY_SERIES_NO=e.MZZY_SERIES_NO JOIN TEST_INFO A17 ON a.MZZY_SERIES_NO = A17.MZZY_SERIES_NO where a.PAT_AGE>='18' and (to_char(a.ADMIT_DATE,'YYYY-MM-DD') >= '2021-01-01') AND (b.DIAG_RESULT LIKE '%鼻咽癌%' or b.DIAG_RESULT LIKE '%鼻咽恶性肿瘤%' or b.DIAG_CODE LIKE '%C11/900%') and d.DRUG_NAME not in (select DRUG_NAME FROM DRUG_INFO WHERE DRUG_NAME like '卡培他滨') and b.DIAG_RESULT NOT IN (SELECT DIAG_RESULT FROM PA_DIAG WHERE DIAG_RESULT LIKE '%HIV阳性%') and b.DIAG_RESULT NOT IN (SELECT DIAG_RESULT FROM PA_DIAG WHERE DIAG_RESULT LIKE '%充血性心力衰竭%') AND to_char(( A17.TEST_DETAIL_ITEM_NAME = '中性粒细胞' AND A17.TEST_RESULT >= 1.5 ) OR ( A17.TEST_DETAIL_ITEM_NAME = '血小板' AND A17.TEST_RESULT >= 100 ) OR ( A17.TEST_DETAIL_ITEM_NAME = '血红蛋白' AND A17.TEST_RESULT >= 9 ) OR ( A17.TEST_DETAIL_ITEM_NAME = '丙氨酸氨基转移酶' AND A17.TEST_RESULT <= 2.5 ) OR ( A17.TEST_DETAIL_ITEM_NAME = '天门冬氨酸氨基转移酶' AND A17.TEST_RESULT <= 2.5 ) OR ( A17.TEST_DETAIL_ITEM_NAME = '肌酐清除率' AND A17.TEST_RESULT > 51 ) OR ( A17.TEST_DETAIL_ITEM_NAME = '肌酐' AND A17.TEST_RESULT <=1.5 ) OR ( A17.TEST_DETAIL_ITEM_NAME = '凝血酶原时间' AND A17.TEST_RESULT <= 1.5 ))语句哪里有问题

这个 SQL 语句中有一个问题，就是在最后一个 AND 子句中的 to_char() 函数的参数不正确。to_char() 函数需要一个日期或数字类型的参数，但是这里传入的是一个逻辑类型的表达式。

如果你想要在 WHERE 子句中使用逻辑表达式，则可以使用 CASE WHEN 语句来实现。下面是修改后的 SQL 语句：

SELECT DISTINCT
    a.EMPI_ID,
    a.PATIENT_NO,
    a.MR_NO,
    a.PAT_NAME,
    a.PAT_SEX,
    a.PAT_AGE,
    a.PAT_PHONE_NO,
    b.DIAG_RESULT,
    a.ADMIT_DATE,
    a.DISCHARGE_DEPT_NAME,
    a.ATTEND_DR
FROM
    BASIC_INFORMATION a
    JOIN PA_DIAG b ON a.MZZY_SERIES_NO = b.MZZY_SERIES_NO
    JOIN EXAM_DESC_RESULT_CODE c ON a.MZZY_SERIES_NO = c.MZZY_SERIES_NO
    JOIN DRUG_INFO d ON a.MZZY_SERIES_NO = d.MZZY_SERIES_NO
    JOIN EMR_CONTENT e ON a.MZZY_SERIES_NO = e.MZZY_SERIES_NO
    JOIN TEST_INFO A17 ON a.MZZY_SERIES_NO = A17.MZZY_SERIES_NO
WHERE
    a.PAT_AGE >= '18'
    AND (TO_CHAR(a.ADMIT_DATE, 'YYYY-MM-DD') >= '2021-01-01')
    AND (
        b.DIAG_RESULT LIKE '%鼻咽癌%'
        OR b.DIAG_RESULT LIKE '%鼻咽恶性肿瘤%'
        OR b.DIAG_CODE LIKE '%C11/900%'
    )
    AND d.DRUG_NAME NOT IN (
        SELECT DRUG_NAME
        FROM DRUG_INFO
        WHERE DRUG_NAME LIKE '卡培他滨'
    )
    AND b.DIAG_RESULT NOT IN (
        SELECT DIAG_RESULT
        FROM PA_DIAG
        WHERE DIAG_RESULT LIKE '%HIV阳性%'
    )
    AND b.DIAG_RESULT NOT IN (
        SELECT DIAG_RESULT
        FROM PA_DIAG
        WHERE DIAG_RESULT LIKE '%充血性心力衰竭%'
    )
    AND (
        CASE
            WHEN A17.TEST_DETAIL_ITEM_NAME = '中性粒细胞' AND A17.TEST_RESULT >= 1.5 THEN 'Y'
            WHEN A17.TEST_DETAIL_ITEM_NAME = '血小板' AND A17.TEST_RESULT >= 100 THEN 'Y'
            WHEN A17.TEST_DETAIL_ITEM_NAME = '血红蛋白' AND A17.TEST_RESULT >= 9 THEN 'Y'
            WHEN A17.TEST_DETAIL_ITEM_NAME = '丙氨酸氨基转移酶' AND A17.TEST_RESULT <= 2.5 THEN 'Y'
            WHEN A17.TEST_DETAIL_ITEM_NAME = '天门冬氨酸氨基转移酶' AND A17.TEST_RESULT <= 2.5 THEN 'Y'
            WHEN A17.TEST_DETAIL_ITEM_NAME = '肌酐清除率' AND A17.TEST_RESULT > 51 THEN 'Y'
            WHEN A17.TEST_DETAIL_ITEM_NAME = '肌酐' AND A17.TEST_RESULT <= 1.5 THEN 'Y'
            WHEN A17.TEST_DETAIL_ITEM_NAME = '凝血酶原时间' AND A17.TEST_RESULT <= 1.5 THEN 'Y'
            ELSE 'N'
        END) = 'Y';

在最后一个 AND 子句中，使用了 CASE WHEN 语句来判断测试结果是否符合条件。如果测试结果符合条件，则返回 Y，否则返回 N。然后再判断返回值是否等于 Y。