Question

难以返回所需的结果。

这是我的问题：

SELECT
    DATABASE()AS INVOICES_Range_$0,
    count(
        DISTINCT invoice_lines.invoice_header_id
    )AS 'Invoice Header Count',
    sum(invoice_lines.accounting_total)AS 'Dollar_Value',
    100 * COUNT(
        DISTINCT invoice_lines.invoice_header_id
    )/(
        SELECT
            COUNT(
                DISTINCT invoice_lines.invoice_header_id
            )
        FROM
            invoice_lines
        WHERE
            (
                invoice_lines. STATUS NOT LIKE '%new%'
            )
        AND(
            invoice_lines. STATUS NOT LIKE '%voided%'
        )
    )AS 'Percent of All Invoices',
    COUNT(approvals.approvable_id)/ count(
        DISTINCT invoice_lines.invoice_header_id
    )AS 'AVG_APPROVALS'
FROM
    invoice_lines
LEFT JOIN approvals ON invoice_lines.invoice_header_id = approvals.approvable_id
WHERE
    (
        invoice_lines.accounting_total = 0
    )
AND(
    invoice_lines. STATUS NOT LIKE '%new%'
)
AND(
    invoice_lines. STATUS NOT LIKE '%voided%'
);

此查询返回任何发票行的值为$ 0的结果。

作为参考，我们可能有一张发票，其中一行是$ 0但其他行总计$ 600。

我想只在上面的查询中包含所有发票行的总数等于$ 0。

我试过了：

    SELECT
    DATABASE()AS INVOICES_Range_$0,
    count(
        DISTINCT invoice_lines.invoice_header_id
    )AS 'Invoice Header Count',
    sum(invoice_lines.accounting_total)AS 'Dollar_Value',
    100 * COUNT(
        DISTINCT invoice_lines.invoice_header_id
    )/(
        SELECT
            COUNT(
                DISTINCT invoice_lines.invoice_header_id
            )
        FROM
            invoice_lines
        WHERE
            (
                invoice_lines. STATUS NOT LIKE '%new%'
            )
        AND(
            invoice_lines. STATUS NOT LIKE '%voided%'
        )
    )AS 'Percent of All Invoices',
    COUNT(approvals.approvable_id)/ count(
        DISTINCT invoice_lines.invoice_header_id
    )AS 'AVG_APPROVALS'
FROM
    invoice_lines
LEFT JOIN approvals ON invoice_lines.invoice_header_id = approvals.approvable_id
WHERE
    (
        invoice_lines. STATUS NOT LIKE '%new%'
    )
AND(
    invoice_lines. STATUS NOT LIKE '%voided%'
)
HAVING
    SUM(
        invoice_lines.accounting_total = 0
    );

然而，返回相同的结果。此外，修改为

HAVING (SUM(invoice_lines.accounting_total) < 500 )

它会返回所有发票和总金额。

我非常感谢任何帮助，因为我无法确定将结果限制为invoice_header_id的正确方法，只计算所有行总和等于0的发票。

Answer 1

HAVING
    SUM(
        invoice_lines.accounting_total = 0
    );

可能想成为

HAVING
    SUM(
        invoice_lines.accounting_total
    )  = 0

Answer 2

解决方案是使用＆＃39; Dollar Value＆＃39;在WHERE子句中进行评估。在查询的前面确定。

我将SUM（invoice_lines.accounting_total）更改为TOTAL

然后在WHERE子句中我添加了AND（TOTAL = 0）;

像冠军一样工作。

MySQL使用Having和Where子句

2 个答案: