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Because in the SELECT clause we query the column name and these are always written separated by commas (, ).
Even if there are only two column names to be written we separate them by comma.
Also, AND is a operator used in WHERE clause.
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Weather Observation Station 1
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Because in the SELECT clause we query the column name and these are always written separated by commas (, ). Even if there are only two column names to be written we separate them by comma.
Also, AND is a operator used in WHERE clause.