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@@ -0,0 +1,37 @@
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+create table asd();
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+
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+create table tb (col1, col2);
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+
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+create table tb1 (
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+ col1 int primary key,
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+ col2 string
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+);
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+
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+create table tb2 (
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+ x int,
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+ y int,
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+ z int
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+);
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+
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+SELECT Student.Sname
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+FROM Student
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+WHERE Sno IN (
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+ SELECT Sno
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+ FROM SC
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+ WHERE SC.Cno='81003'
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+);
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+
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+select Student.Sname from Student join SC on Student.Sno=SC.Sno where SC.Cno='81003';
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+
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+select Student.Sname from Student join SC on Student.Sno=SC.Sno and SC.Cno='81003';
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+
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+insert into tb1 values (1, 'foo');
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+
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+insert into tb1 values (2, 'foo');
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+
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+update tb1 set col1=3 where col1=2;
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+
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+select * from tb1 where c1 > 1 and c2 = 'foo';
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+
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+delete from tb1 where c1 = 1;
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+
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