towncodeNo TownName 2023001 M1 2023001 M1 2031025 Z1 2031025 Z1 2031030 Z1
Townname Total M1 1 Z1 2
SELECT TownName, COUNT(TownName) - 1 AS Total FROM myTable GROUP BY TownName
select TownName, Count(Distinct(towncodeNo )) from tblSample group by TownName;
var
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