Question

I have a table student like this

id | name | zip 
1  | abc  | 1234
2  | xyz  | 4321
3  | asd  | 1234

I want to get all records but zip code should not be repeated. So In case of above table records, record No 1 and 2 should be fetched. Record No. 3 will not be fetched because it has a zip code which is already in record No. 1

Answer 1

SELECT DISTINCT fieldName FROM tableName;

The following query will only select distinct ‘zip’ field.

SELECT DISTINCT zip FROM student;

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SELECT * FROM tableName GROUP BY fieldName;

The following query will select all fields along with distinct zip field.

SELECT * FROM student GROUP BY zip;