msSql_函数_从字符串取出数字[zt]

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Create  FUNCTION fn_numeric(@s varchar(2000))
 RETURNS varchar(200)
 
AS
BEGIN
 DECLARE @r varchar(200)
 SET @r =\'\'
 WHILE PATINDEX(\'%[0-9|.]%\',@s)>0
 BEGIN
  SET @r = @r + SubString(@s, PATINDEX(\'%[0-9|.]%\', @s), 1)
  SET @s = Stuff(@s, 1, PATINDEX(\'%[0-9|.]%\', @s), \'\')
 end
 RETURN @r

--调用 select dbo.fn_num(\'a2h5我j.8 \') 结果 25.8
END

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