query

I have a table in which I have a field with format like 100101. It has many values like 100101, 100102, 100103, 100201, 100202, 100301. I have to write a query such that I have to get only distinct values such that they contain only the substring I need. If I give 10 as substring, then it should return only 100101 or 100102 but not both i.e if the last two characters are not same it should not return both of them. It should return only values starting with 10 the middle two values should be distinct and the last two characters may be anything.

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