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What the hell is union in MySQL?

Source: Internet
Author: User
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When you are aware of SQL, you often use a less common union query
Http://www.php20.com/forum.php?m ... &extra=page%3d1
Clears the table. Execute the SQL from the link above. Try it.

[SQL] Plain Text View Copy Code?
123 selecttitle as tt from newsunion  select class_name as cn fromnews_class;


Results

Can get a conclusion.
1. The result is a result of 2 tables.
2. The field name of the previous table is the field name.
3. The same number of fields before and after

What the hell is union in MySQL?

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