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Setting user variables within expressions is deprecated and will be removed in a future release. Consider alternatives: 'SET variable=expression, ...', or 'SELECT expression(s) INTO variables(s)'. SQL.sql 2 1
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Select @a = b, b, c, d
From theTable
Where ...
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Select @a = b, b, c, d
From theTable
Where ...

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set @v = 1000;
select * from t1 where salary < @v
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set @v = 1000;
select * from t1 where salary < @v

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set @v = 1000;
select * from t1 where salary < @v
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b.id_block, t.id_teacher,s.id_subject FROM Blok b,teacher t,subject s WHERE b.id_teacher=t.id_teacher and b.id_subject=s.id_sybject ORDER BY id_block ASC ";AA
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