Question

这是查询

CASE SF.value
            WHEN '' THEN '9999999999'
            WHEN 'N/A' THEN '99999999'
            WHEN 'POA' THEN '999999999'
            WHEN 'Free' THEN -1
            ELSE IF(SF.value IS NULL,'9999999999',CAST(SF.value as DECIMAL))
        END as priceval,

    ///End Query

我在DB中有价值

value(varchar)

    4
    4.5
    4.3
    6.6

从DB获取后

    PRINTING:
    var_dump($data);

    Output
    ---------
    string(1) "4"
    string(1) "5"
    string(1) "5"
    string(1) "7"

我需要按照以下顺序获取值BY整数或Float或Decimal但按顺序依次为

    string(1) "4"
    string(3) "4.3"
    string(3) "4.5"
    string(3) "6.6"

    (OR)

    int(1) "4"
    int(3) "4.3"
    int(3) "4.5"
    int(3) "6.6"

Answer 1

您使用DECIMAL而未指定精度，请尝试CAST(SF.value AS DECIMAL(10,1))

将值varchar转换为mysql中的其他数据类型？

1 个答案: