to_char()多了个字符
sp.param_value nvarchar2(200); select sp.param_code, to_number(sp.param_value), sp.param_value,length(param_value) 为什么to_char不行呢？ 不带格式的是3个字符 难怪查不到数据呢！！ 而这种直接单引号就行 所以 and sp.param_value = trim(to_char(0
sp.param_value nvarchar2(200);
select sp.param_code, to_number(sp.param_value), sp.param_value,length(param_value)
为什么to_char不行呢？
不带格式的是3个字符
难怪查不到数据呢！！
而这种直接单引号就行
所以 and sp.param_value = trim(to_char(0.78,'0.00')) 就行了
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