I have this table ID | Category | Subcategory |
1 | Books | Comic |
2 | Books | Fiction |
3 | Cars | New |
4 | Books | Non- fiction |
4 | Cars | Second hand |
and I want to select only unique entries from the column 'Category'. That is, I want 'Books' and 'Cars' to be selected only once. How can I write a query ?? Help please.
You mean distinct ?
SELECT Distinct Category
FROM Table
Or group by
SELECT Category
FROM Table
GROUP BY Category
Group by enables you to retrieve various aggregates based on your query (such as number of items in category etc...)
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