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			44 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			44 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
| #
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| # Test of different EXPLAIN's
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| 
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| --disable_warnings
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| drop table if exists t1;
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| --enable_warnings
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| create table t1 (id int not null, str char(10), unique(str));
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| explain select * from t1;
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| insert into t1 values (1, null),(2, null),(3, "foo"),(4, "bar");
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| select * from t1 where str is null;
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| select * from t1 where str="foo";
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| explain select * from t1 where str is null;
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| explain select * from t1 where str="foo";
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| explain select * from t1 ignore key (str) where str="foo";
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| explain select * from t1 use key (str,str) where str="foo";
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| 
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| #The following should give errors
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| --error 1072
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| explain select * from t1 use key (str,str,foo) where str="foo";
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| --error 1072
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| explain select * from t1 ignore key (str,str,foo) where str="foo";
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| drop table t1;
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| 
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| explain select 1;
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| 
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| create table t1 (a int not null);
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| explain select count(*) from t1;
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| insert into t1 values(1);
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| explain select count(*) from t1;
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| insert into t1 values(1);
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| explain select count(*) from t1;
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| drop table t1;
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| 
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| #
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| # Bug #3403 Wrong encoding in EXPLAIN SELECT output
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| #
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| set names koi8r;
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| create table ÔÁÂ (ËÏÌ0 int, ËÏÌ1 int, key ÉÎÄ0 (ËÏÌ0), key ÉÎÄ01 (ËÏÌ0,ËÏÌ1));
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| insert into ÔÁÂ (ËÏÌ0) values (1);
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| insert into ÔÁÂ (ËÏÌ0) values (2);
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| explain select ËÏÌ0 from ÔÁÂ where ËÏÌ0=1;
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| drop table ÔÁÂ;
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| set names latin1;
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