Question

如何通过使用sql查询搜索特定列名来显示完整行的内容？

我试着写这样的查询：

s = "select RegNo, FirstName, LastName,JobTittle,TotalExperienceYear,TotalExperienceMonth,AreaPrefered,MobileNo from EmployeeRegistration where RegNo like '%" + reg + "' or FirstName like '%" + reg + "' or LastName like '%" + reg + "' or JobTittle like '%" + reg + "' or TotalExperienceYear like '%" + reg + "' or TotalExperienceMonth like '%" + reg + "' or AreaPrefered like '%" + reg + "' or MobileNo like '%" + reg + "%'";

但它在不同字段之间看起来相同的值时选择字段。

Answer 1

s = "SELECT
RegNo, FirstName, LastName,JobTittle,TotalExperienceYear,TotalExperienceMonth,AreaPrefered,MobileNo 
FROM EmployeeRegistration
WHERE RegNo like '%" + reg + "'";

尝试此查询。您正在检查所有列，但它无法返回一个东西，因为FirstName，LastName，RegNo，JobTitle所有这些东西都不能像'％reg'

Answer 2

s =“从EmployeeRegistration中选择RegNo，FirstName，LastName，JobTittle，TotalExperienceYear，TotalExperienceMonth，AreaPrefered，MobileNo，FatherName，其中RegNo喜欢'％'+ txtRno.Text +”％'AND FirstName喜欢'％'+ txtFstName.Text +“％'和LastName喜欢'％'+ txtSecondName.Text +”％'和JobTittle喜欢'％'+ TxtJobTittle.Text +“％'和TotalExperienceYear喜欢'％'+ txtExpYear.Text +”％'和TotalExperienceMonth like' ％“+ txtExpMonth.Text +”％'和AreaPrefered类似'％'+ txtScndName.Text +“％'和MobileNo类似'％'+ txtMobno.Text +”％'和FatherName类似'％'+ txtFthrName.Text +“ ％'“;

SQL SELECT语句，用于选择特定字段的值并显示所有行

2 个答案: