mirror of
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23145cfed7
bmove_allign -> bmove_align Added OLAP function ROLLUP Split mysql_fix_privilege_tables to a script and a .sql data file Added new (MEMROOT*) functions to avoid calling current_thd() when creating some common objects. Added table_alias_charset, for easier --lower-case-table-name handling Better SQL_MODE handling (Setting complex options also sets sub options) New (faster) assembler string functions for x86
256 lines
7.8 KiB
Text
256 lines
7.8 KiB
Text
drop table if exists t1,t2;
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create table t1 (product varchar(32), country_id int not null, year int, profit int);
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insert into t1 values ( 'Computer', 2,2000, 1200),
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( 'TV', 1, 1999, 150),
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( 'Calculator', 1, 1999,50),
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( 'Computer', 1, 1999,1500),
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( 'Computer', 1, 2000,1500),
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( 'TV', 1, 2000, 150),
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( 'TV', 2, 2000, 100),
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( 'TV', 2, 2000, 100),
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( 'Calculator', 1, 2000,75),
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( 'Calculator', 2, 2000,75),
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( 'TV', 1, 1999, 100),
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( 'Computer', 1, 1999,1200),
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( 'Computer', 2, 2000,1500),
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( 'Calculator', 2, 2000,75),
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( 'Phone', 3, 2003,10)
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;
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create table t2 (country_id int primary key, country char(20) not null);
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insert into t2 values (1, 'USA'),(2,'India'), (3,'Finland');
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select product, sum(profit) from t1 group by product;
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product sum(profit)
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Calculator 275
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Computer 6900
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Phone 10
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TV 600
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select product, sum(profit) from t1 group by product with rollup;
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product sum(profit)
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Calculator 275
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Computer 6900
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Phone 10
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TV 600
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NULL 7785
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select product, sum(profit) from t1 group by 1 with rollup;
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product sum(profit)
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Calculator 275
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Computer 6900
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Phone 10
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TV 600
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NULL 7785
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select product, sum(profit),avg(profit) from t1 group by product with rollup;
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product sum(profit) avg(profit)
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Calculator 275 68.7500
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Computer 6900 1380.0000
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Phone 10 10.0000
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TV 600 120.0000
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NULL 7785 519.0000
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select product, country_id , year, sum(profit) from t1 group by product, country_id, year;
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product country_id year sum(profit)
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Calculator 1 1999 50
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Calculator 1 2000 75
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Calculator 2 2000 150
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Computer 1 1999 2700
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Computer 1 2000 1500
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Computer 2 2000 2700
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Phone 3 2003 10
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TV 1 1999 250
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TV 1 2000 150
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TV 2 2000 200
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select product, country_id , year, sum(profit) from t1 group by product, country_id, year with rollup;
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product country_id year sum(profit)
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Calculator 1 1999 50
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Calculator 1 2000 75
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Calculator 1 NULL 125
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Calculator 2 2000 150
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Calculator 2 NULL 150
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Calculator NULL NULL 275
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Computer 1 1999 2700
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Computer 1 2000 1500
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Computer 1 NULL 4200
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Computer 2 2000 2700
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Computer 2 NULL 2700
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Computer NULL NULL 6900
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Phone 3 2003 10
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Phone 3 NULL 10
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Phone NULL NULL 10
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TV 1 1999 250
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TV 1 2000 150
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TV 1 NULL 400
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TV 2 2000 200
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TV 2 NULL 200
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TV NULL NULL 600
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NULL NULL NULL 7785
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explain select product, country_id , year, sum(profit) from t1 group by product, country_id, year with rollup;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 15 Using temporary; Using filesort
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select product, country_id , sum(profit) from t1 group by product desc, country_id with rollup;
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product country_id sum(profit)
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TV 1 400
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TV 2 200
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TV NULL 600
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Phone 3 10
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Phone NULL 10
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Computer 1 4200
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Computer 2 2700
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Computer NULL 6900
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Calculator 1 125
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Calculator 2 150
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Calculator NULL 275
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NULL NULL 7785
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select product, country_id , year, sum(profit) from t1 group by product, country_id, year with rollup limit 5;
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product country_id year sum(profit)
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Calculator 1 1999 50
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Calculator 1 2000 75
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Calculator 1 NULL 125
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Calculator 2 2000 150
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Calculator 2 NULL 150
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select product, country_id , year, sum(profit) from t1 group by product, country_id, year with rollup limit 3,3;
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product country_id year sum(profit)
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Calculator 2 2000 150
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Calculator 2 NULL 150
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Calculator NULL NULL 275
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select product, country_id, count(*), count(distinct year) from t1 group by product, country_id;
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product country_id count(*) count(distinct year)
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Calculator 1 2 2
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Calculator 2 2 1
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Computer 1 3 2
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Computer 2 2 1
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Phone 3 1 1
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TV 1 3 2
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TV 2 2 1
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select product, country_id, count(*), count(distinct year) from t1 group by product, country_id with rollup;
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product country_id count(*) count(distinct year)
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Calculator 1 2 2
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Calculator 2 2 1
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Calculator NULL 4 2
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Computer 1 3 2
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Computer 2 2 1
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Computer NULL 5 2
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Phone 3 1 1
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Phone NULL 1 1
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TV 1 3 2
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TV 2 2 1
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TV NULL 5 2
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NULL NULL 15 3
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select product, country_id , year, sum(profit) from t1 group by product, country_id, year with rollup having country_id = 1;
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product country_id year sum(profit)
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Calculator 1 1999 50
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Calculator 1 2000 75
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Calculator 1 NULL 125
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Computer 1 1999 2700
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Computer 1 2000 1500
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Computer 1 NULL 4200
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TV 1 1999 250
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TV 1 2000 150
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TV 1 NULL 400
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select product, country_id , year, sum(profit) from t1 group by product, country_id, year with rollup having sum(profit) > 200;
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product country_id year sum(profit)
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Calculator NULL NULL 275
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Computer 1 1999 2700
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Computer 1 2000 1500
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Computer 1 NULL 4200
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Computer 2 2000 2700
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Computer 2 NULL 2700
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Computer NULL NULL 6900
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TV 1 1999 250
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TV 1 NULL 400
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TV NULL NULL 600
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NULL NULL NULL 7785
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select product, country_id , year, sum(profit) from t1 group by product, country_id, year with rollup having sum(profit) > 7000;
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product country_id year sum(profit)
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NULL NULL NULL 7785
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select concat(product,':',country_id) as 'prod', concat(":",year,":") as 'year',1+1, sum(profit)/count(*) from t1 group by 1,2 with rollup;
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prod year 1+1 sum(profit)/count(*)
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Calculator:1 :1999: 2 50.00
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Calculator:1 :2000: 2 75.00
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Calculator:1 NULL 2 62.50
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Calculator:2 :2000: 2 75.00
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Calculator:2 NULL 2 75.00
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Computer:1 :1999: 2 1350.00
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Computer:1 :2000: 2 1500.00
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Computer:1 NULL 2 1400.00
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Computer:2 :2000: 2 1350.00
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Computer:2 NULL 2 1350.00
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Phone:3 :2003: 2 10.00
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Phone:3 NULL 2 10.00
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TV:1 :1999: 2 125.00
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TV:1 :2000: 2 150.00
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TV:1 NULL 2 133.33
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TV:2 :2000: 2 100.00
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TV:2 NULL 2 100.00
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NULL NULL 2 519.00
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select product, sum(profit)/count(*) from t1 group by product with rollup;
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product sum(profit)/count(*)
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Calculator 68.75
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Computer 1380.00
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Phone 10.00
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TV 120.00
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NULL 519.00
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select left(product,4) as prod, sum(profit)/count(*) from t1 group by prod with rollup;
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prod sum(profit)/count(*)
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Calc 68.75
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Comp 1380.00
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Phon 10.00
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TV 120.00
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NULL 519.00
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select concat(product,':',country_id), 1+1, sum(profit)/count(*) from t1 group by concat(product,':',country_id) with rollup;
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concat(product,':',country_id) 1+1 sum(profit)/count(*)
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Calculator:1 2 62.50
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Calculator:2 2 75.00
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Computer:1 2 1400.00
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Computer:2 2 1350.00
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Phone:3 2 10.00
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TV:1 2 133.33
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TV:2 2 100.00
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NULL 2 519.00
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select product, country , year, sum(profit) from t1,t2 where t1.country_id=t2.country_id group by product, country, year with rollup;
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product country year sum(profit)
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Calculator India 2000 150
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Calculator India NULL 150
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Calculator USA 1999 50
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Calculator USA 2000 75
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Calculator USA NULL 125
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Calculator NULL NULL 275
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Computer India 2000 2700
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Computer India NULL 2700
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Computer USA 1999 2700
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Computer USA 2000 1500
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Computer USA NULL 4200
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Computer NULL NULL 6900
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Phone Finland 2003 10
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Phone Finland NULL 10
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Phone NULL NULL 10
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TV India 2000 200
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TV India NULL 200
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TV USA 1999 250
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TV USA 2000 150
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TV USA NULL 400
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TV NULL NULL 600
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NULL NULL NULL 7785
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select product, `sum` from (select product, sum(profit) as 'sum' from t1 group by product with rollup) as tmp where product is null;
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product sum
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NULL 7785
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select product from t1 where exists (select product, country_id , sum(profit) from t1 as t2 where t1.product=t2.product group by product, country_id with rollup having sum(profit) > 6000);
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product
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Computer
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Computer
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Computer
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Computer
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Computer
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select product, country_id , year, sum(profit) from t1 group by product, country_id, year having country_id is NULL;
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product country_id year sum(profit)
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select concat(':',product,':'), sum(profit),avg(profit) from t1 group by product with rollup;
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concat(':',product,':') sum(profit) avg(profit)
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:Calculator: 275 68.7500
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:Computer: 6900 1380.0000
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:Phone: 10 10.0000
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:TV: 600 120.0000
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:TV: 7785 519.0000
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select product, country_id , year, sum(profit) from t1 group by product, country_id, year with cube;
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ERROR 42000: This version of MySQL doesn't yet support 'CUBE'
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explain select product, country_id , year, sum(profit) from t1 group by product, country_id, year with cube;
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ERROR 42000: This version of MySQL doesn't yet support 'CUBE'
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select product, country_id , year, sum(profit) from t1 group by product, country_id, year with cube union all select product, country_id , year, sum(profit) from t1 group by product, country_id, year with rollup;
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ERROR 42000: This version of MySQL doesn't yet support 'CUBE'
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drop table t1,t2;
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