I have a column in mysql named parcel_number of varchar type. It contains values like ab-cd-ef and uvwxyz. A search for abcdef or uv-wx-yz does not return those records.

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I have a column in mysql named parcel_number of varchar type. It contains values like ab-cd-ef and uvwxyz. A search for abcdef or uv-wx-yz does not return those records.

How should I write the query to meet this requirement?

Posted 17-Oct-12 21:37pm

jaison john

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Mehdi Gholam · Answer 1 · 2012-10-17T22:04:00

Solution 1

"ab-cd-ef" and "abcdef" are different values so you can not search for one and expect the other.

To get both values you can do something like using the LIKE keyword :

SQL

select * from [tablename] where columnname like 'ab%'

Posted 17-Oct-12 22:04pm

Mehdi Gholam

dkap502 · Answer 2 · 2012-10-17T23:26:00

Solution 2

you can use mysql Replace function to remove unwanted character from table field and search string. Here is example

SQL

select * from [tablename] where Replace(columnname, '-', '') like CONCAT('%',Replace(searchstring, '-', ''), '%')

Posted 17-Oct-12 23:26pm

dkap502

Updated 17-Oct-12 23:35pm

v2

adriancs · Answer 3 · 2012-10-18T00:40:00

you can do this, first create this method:

C#

public static string GetLike(string input)
{
    string[] sa = input.Split(' ');
    var sb = new System.Text.StringBuilder();
    sb.Append("'");
    foreach (string s in sa)
    {
        sb.Append("%" + s);
    }
    sb.Append("%'");
    return sb.ToString();
}

Then, we can use it like this:

C#

private string GenerateSQL(string searchThis)
{
    string sql = "select * from `tablename` where `columnname` like "
                 + GetLike(searchThis) + ";";
}

In this case, if you want to search "ab-cd-ef" and "abcdef", you do it like this

C#

GenerateSQL("ab cd");

and this will be generated:

SQL

select * from `tablename` where `columnname` like '%ab%cd%';

you will be able to get both. (ab-cd-ef and abcdef)