错误代码：1292 - 截断不正确的DOUBLE值：' - '

Question

SET @newNum = IF(
    RIGHT("-600.00",1) REGEXP '^[-]' = '-',
    REPLACE("-600.00",",",""),
    -1*REPLACE(REPLACE("-600.00",",",""),"-","")
);

我不断得到一个截断不正确的DOUBLE值：' - '执行此行时，任何人都知道导致这种情况的原因是什么？

Answer 1

REGEXP返回1或0，具体取决于是否匹配。将结果与-进行比较是不正确的，您可以改为：

DECLARE @oldNum VARCHAR(10);
DECLARE @newNum VARCHAR(10);
SET @oldNum = '600.00-';
SET @newNum = IF(
    RIGHT(@oldNum, 1) = '-',
    CONCAT('-', REPLACE(REPLACE(@oldNum, ',', ''), '-', '')),
                        REPLACE(@oldNum, ',', '')
);
SELECT @oldNum, @newNum