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user 41348
Writing queries to request or change information stored in a database or other information management system. Questions should include table and index definitions, sample data, expected output, and a tag for the specific system (e.g. MySQL, PostgreSQL, Oracle, SQL Server, MongoDB).
1
vote
Suppress display in a column if the value is equal to the value in another column
Considering your table's name is "date_table", then you can select like this
SELECT date_table1.`column1`, date_table2.`column2`
FROM date_table AS date_table1
LEFT JOIN date_table AS date_table2
…
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