是否有可以在列中查找非整数的 sql 条件？
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时间：2020-09-01 10:19:21 来源:igfitidea点击:
Is there an sql condition that can look for non integers in a column?
提问by Niklas
Basically I would like a select statement that would function like this
基本上我想要一个像这样运行的选择语句
SELECT *
FROM table
WHERE column IS NOT INT
Is there a condition like this or how do you check for non-integers in an nvarchar(10) column?
是否有这样的条件，或者您如何检查 nvarchar(10) 列中的非整数？
采纳答案by Quassnoi
In SQL Serveryou can do:
在SQL Server你可以这样做：
SELECT *
FROM mytable
WHERE CASE WHEN IsNumeric(mycolumn) = 1 THEN CASE WHEN CAST(mycolumn AS FLOAT) <> CAST(CAST(mycolumn AS FLOAT) AS INT) THEN 1 END ELSE 1 END = 1
回答by Martin Smith
You could also use
你也可以使用
SELECT *
FROM T
WHERE C = ''
OR C LIKE '%[^0-9-]%' /*Contains a char other than - or 0-9*/
OR C LIKE '_%-%' /*Contains the - char other than 1st position*/
