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107 lines
1.9 KiB
Plaintext
107 lines
1.9 KiB
Plaintext
DROP DATABASE IF EXISTS mcs40_db;
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CREATE DATABASE mcs40_db;
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USE mcs40_db;
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CREATE TABLE t1(t1_int INT, t1_char CHAR(5))ENGINE=Columnstore;
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INSERT INTO t1 VALUES(1,'aaa'),(2,'aaa'),(3,'bbb'),(4,'ccc'),(5,'ddd');
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SELECT (t1_int+1),(t1_int-1),(t1_int*2),(t1_int/10.3) FROM t1;
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(t1_int+1) (t1_int-1) (t1_int*2) (t1_int/10.3)
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2 0 2 0.0971
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3 1 4 0.1942
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4 2 6 0.2913
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5 3 8 0.3883
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6 4 10 0.4854
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SELECT * FROM t1 WHERE t1_int <= 1 OR t1_char='aaa';
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t1_int t1_char
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1 aaa
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2 aaa
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SELECT * FROM t1 WHERE t1_int <= 1 || t1_char='aaa';
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t1_int t1_char
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1 aaa
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2 aaa
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SELECT * FROM t1 WHERE t1_int > 1 AND t1_char LIKE '%a%';
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t1_int t1_char
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2 aaa
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SELECT * FROM t1 WHERE t1_int > 1 && t1_char='aaa';
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t1_int t1_char
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2 aaa
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SELECT * FROM t1 WHERE t1_int NOT LIKE 1;
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t1_int t1_char
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2 aaa
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3 bbb
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4 ccc
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5 ddd
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SELECT * FROM t1 WHERE t1_int != 1;
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t1_int t1_char
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2 aaa
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3 bbb
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4 ccc
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5 ddd
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SELECT * FROM t1 WHERE t1_int BETWEEN 1 AND 5;
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t1_int t1_char
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1 aaa
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2 aaa
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3 bbb
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4 ccc
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5 ddd
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SELECT * FROM t1 WHERE t1_int NOT BETWEEN 2 AND 5;
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t1_int t1_char
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1 aaa
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SELECT * FROM t1 WHERE t1_int NOT IN (SELECT t1_int FROM t1 WHERE t1_int=1);
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t1_int t1_char
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2 aaa
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3 bbb
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4 ccc
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5 ddd
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SELECT * FROM t1 WHERE t1_char IN (SELECT t1_char FROM t1 WHERE t1_char='aaa');
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t1_int t1_char
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1 aaa
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2 aaa
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SELECT CASE t1_int WHEN t1_int=1 THEN t1_char ELSE t1_int END FROM t1;
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CASE t1_int WHEN t1_int=1 THEN t1_char ELSE t1_int END
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aaa
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2
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3
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4
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5
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SET @a=25;
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SET @b=25;
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SELECT @a+@b;
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@a+@b
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50
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SELECT @a-@b;
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@a-@b
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0
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SELECT @a/@b;
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@a/@b
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1.0000
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SELECT @a*@b;
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@a*@b
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625
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SELECT @a>@b;
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@a>@b
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0
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SELECT @a>=@b;
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@a>=@b
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1
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SELECT @a=@b;
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@a=@b
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1
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SELECT @a!=@b;
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@a!=@b
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0
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SELECT @a<@b;
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@a<@b
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0
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SELECT @a<=@b;
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@a<=@b
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1
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SELECT (@a*@b)/POW(@b,0.5);
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(@a*@b)/POW(@b,0.5)
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125
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SELECT (POW(@a,2)-@a)/@b;
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(POW(@a,2)-@a)/@b
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24
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SELECT @a==@b;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '=@b' at line 1
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DROP DATABASE mcs40_db;
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