28 lines
776 B
PHP
28 lines
776 B
PHP
Doctrine provides two relation operators: '.' aka dot and ':' aka colon.
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The dot-operator is used for SQL LEFT JOINs and the colon-operator is used
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for SQL INNER JOINs. Basically you should use dot operator if you want for example
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to select all users and their phonenumbers AND it doesn't matter if the users actually have any phonenumbers.
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On the other hand if you want to select only the users which actually have phonenumbers you should use the colon-operator.
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<code type="php">
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$query->from('User u')->innerJoin('u.Email e');
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$query->execute();
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// executed SQL query:
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// SELECT ... FROM user INNER JOIN email ON ...
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$query->from('User u')->leftJoin('u.Email e');
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$query->execute();
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// executed SQL query:
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// SELECT ... FROM user LEFT JOIN email ON ...
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</code>
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