how to match any part of string?

Question

I have an column something like:

name         value 
John kennedy 1999
Bill gates   8388383
Obama        11110

I need an query that match 1999 if I try get john or kennedy

I tried it:

  cmd.CommandText = "select value from contacts where name like @name";
  cmd.Parameters.AddWithValue("@name", "%" + name);

if @name is john this returns 0 colums if '@name' is kennedy this returns 1999

Answer 1

在名称的两边都加上% ：

cmd.Parameters.AddWithValue("@name", "%" + name + "%");

Answer 2

您可以尝试：

cmd.Parameters.AddWithValue("@name", "%" + name + "%");

Answer 3

您需要在值的两端使用通配符：

cmd.Parameters.AddWithValue("@name", "%" + name + "%");

Answer 4

似乎与参数值的大小写有关，请尝试将列值和参数值设置为大写或小写以及在您的SQL中，看看是否有帮助