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29 lines
1.3 KiB
Text
29 lines
1.3 KiB
Text
#
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# test variables
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#
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drop table if exists t1;
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set @`test`=1,@TEST=3,@select=2,@t5=1.23456;
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select @test,@`select`,@TEST,@not_used;
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set @test_int=10,@test_double=1e-10,@test_string="abcdeghi",@test_string2="abcdefghij",@select=NULL;
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select @test_int,@test_double,@test_string,@test_string2,@select;
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set @test_int="hello",@test_double="hello",@test_string="hello",@test_string2="hello";
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select @test_int,@test_double,@test_string,@test_string2;
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set @test_int="hellohello",@test_double="hellohello",@test_string="hellohello",@test_string2="hellohello";
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select @test_int,@test_double,@test_string,@test_string2;
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set @test_int=null,@test_double=null,@test_string=null,@test_string2=null;
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select @test_int,@test_double,@test_string,@test_string2;
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select @t1:=(@t2:=1)+@t3:=4,@t1,@t2,@t3;
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select @t5;
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#
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# Test problem with WHERE and variables
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#
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CREATE TABLE t1 (c_id INT(4) NOT NULL, c_name CHAR(20), c_country CHAR(3), PRIMARY KEY(c_id));
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INSERT INTO t1 VALUES (1,'Bozo','USA'),(2,'Ronald','USA'),(3,'Kinko','IRE'),(4,'Mr. Floppy','GB');
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SELECT @min_cid:=min(c_id), @max_cid:=max(c_id) from t1;
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SELECT * FROM t1 WHERE c_id=@min_cid OR c_id=@max_cid;
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SELECT * FROM t1 WHERE c_id=@min_cid OR c_id=@max_cid OR c_id=666;
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ALTER TABLE t1 DROP PRIMARY KEY;
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select * from t1 where c_id=@min_cid OR c_id=@max_cid;
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drop table t1;
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