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0.1: SQL-level System Versioning
This commit is contained in:
Daniel Fiala
committed by
Aleksey Midenkov
Aleksey Midenkov
parent
14bdfa8541
commit
be6f2d302c
@ -10,18 +10,18 @@ Variable_name Value
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Ssl_server_not_after Apr 20 14:55:05 2035 GMT
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drop table if exists t1,t2,t3,t4;
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CREATE TABLE t1 (
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Period smallint(4) unsigned zerofill DEFAULT '0000' NOT NULL,
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Period_ smallint(4) unsigned zerofill DEFAULT '0000' NOT NULL,
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Varor_period smallint(4) unsigned DEFAULT '0' NOT NULL
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);
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INSERT INTO t1 VALUES (9410,9412);
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select period from t1;
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period
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select period_ from t1;
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period_
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9410
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select * from t1;
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Period Varor_period
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Period_ Varor_period
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9410 9412
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select t1.* from t1;
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Period Varor_period
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Period_ Varor_period
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9410 9412
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CREATE TABLE t2 (
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auto int not null auto_increment,
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@ -285,8 +285,8 @@ companynr
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34
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29
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00
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select distinct t2.fld3,period from t2,t1 where companynr=37 and fld3 like "O%";
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fld3 period
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select distinct t2.fld3,period_ from t2,t1 where companynr=37 and fld3 like "O%";
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fld3 period_
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obliterates 9410
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offload 9410
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opaquely 9410
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@ -490,12 +490,12 @@ acu
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Ade
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adj
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create table t3 (
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period int not null,
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period_ int not null,
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name char(32) not null,
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companynr int not null,
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price double(11,0),
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price2 double(11,0),
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key (period),
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key (period_),
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key (name)
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);
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create temporary table tmp engine = myisam select * from t3;
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@ -609,35 +609,35 @@ explain select t3.t2nr,fld3 from t2,t3 where t2.companynr = 34 and t2.fld1=t3.t2
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 ALL fld1 NULL NULL NULL 1199 Using where; Using temporary; Using filesort
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1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.fld1 1 Using where; Using index
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explain select * from t3 as t1,t3 where t1.period=t3.period order by t3.period;
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explain select * from t3 as t1,t3 where t1.period_=t3.period_ order by t3.period_;
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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 period NULL NULL NULL 41810 Using filesort
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1 SIMPLE t3 ref period period 4 test.t1.period 4181
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explain select * from t3 as t1,t3 where t1.period=t3.period order by t3.period limit 10;
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1 SIMPLE t1 ALL period_ NULL NULL NULL 41810 Using filesort
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1 SIMPLE t3 ref period_ period_ 4 test.t1.period_ 4181
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explain select * from t3 as t1,t3 where t1.period_=t3.period_ order by t3.period_ limit 10;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t3 index period period 4 NULL 1
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1 SIMPLE t1 ref period period 4 test.t3.period 4181
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explain select * from t3 as t1,t3 where t1.period=t3.period order by t1.period limit 10;
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1 SIMPLE t3 index period_ period_ 4 NULL 1
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1 SIMPLE t1 ref period_ period_ 4 test.t3.period_ 4181
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explain select * from t3 as t1,t3 where t1.period_=t3.period_ order by t1.period_ limit 10;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index period period 4 NULL 1
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1 SIMPLE t3 ref period period 4 test.t1.period 4181
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select period from t1;
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period
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1 SIMPLE t1 index period_ period_ 4 NULL 1
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1 SIMPLE t3 ref period_ period_ 4 test.t1.period_ 4181
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select period_ from t1;
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period_
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9410
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select period from t1 where period=1900;
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period
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select fld3,period from t1,t2 where fld1 = 011401 order by period;
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fld3 period
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select period_ from t1 where period_=1900;
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period_
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select fld3,period_ from t1,t2 where fld1 = 011401 order by period_;
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fld3 period_
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breaking 9410
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select fld3,period from t2,t3 where t2.fld1 = 011401 and t2.fld1=t3.t2nr and t3.period=1001;
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fld3 period
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select fld3,period_ from t2,t3 where t2.fld1 = 011401 and t2.fld1=t3.t2nr and t3.period_=1001;
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fld3 period_
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breaking 1001
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explain select fld3,period from t2,t3 where t2.fld1 = 011401 and t3.t2nr=t2.fld1 and 1001 = t3.period;
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explain select fld3,period_ from t2,t3 where t2.fld1 = 011401 and t3.t2nr=t2.fld1 and 1001 = t3.period_;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 const fld1 fld1 4 const 1
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1 SIMPLE t3 const PRIMARY,period PRIMARY 4 const 1
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select fld3,period from t2,t1 where companynr*10 = 37*10;
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fld3 period
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1 SIMPLE t3 const PRIMARY,period_ PRIMARY 4 const 1
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select fld3,period_ from t2,t1 where companynr*10 = 37*10;
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fld3 period_
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breaking 9410
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Romans 9410
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intercepted 9410
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@ -1226,8 +1226,8 @@ dusted 9410
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encompasses 9410
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presentation 9410
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Kantian 9410
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select fld3,period,price,price2 from t2,t3 where t2.fld1=t3.t2nr and period >= 1001 and period <= 1002 and t2.companynr = 37 order by fld3,period, price;
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fld3 period price price2
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select fld3,period_,price,price2 from t2,t3 where t2.fld1=t3.t2nr and period_ >= 1001 and period_ <= 1002 and t2.companynr = 37 order by fld3,period_, price;
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fld3 period_ price price2
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admonishing 1002 28357832 8723648
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analyzable 1002 28357832 8723648
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annihilates 1001 5987435 234724
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@ -1287,8 +1287,8 @@ ventilate 1001 5987435 234724
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wallet 1001 5987435 234724
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Weissmuller 1002 28357832 8723648
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Wotan 1002 28357832 8723648
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select t2.fld1,fld3,period,price,price2 from t2,t3 where t2.fld1>= 18201 and t2.fld1 <= 18811 and t2.fld1=t3.t2nr and period = 1001 and t2.companynr = 37;
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fld1 fld3 period price price2
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select t2.fld1,fld3,period_,price,price2 from t2,t3 where t2.fld1>= 18201 and t2.fld1 <= 18811 and t2.fld1=t3.t2nr and period_ = 1001 and t2.companynr = 37;
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fld1 fld3 period_ price price2
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018201 relaxing 1001 5987435 234724
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018601 vacuuming 1001 5987435 234724
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018801 inch 1001 5987435 234724
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@ -1328,7 +1328,7 @@ companynr companyname
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65 company 9
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68 company 10
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select * from t1,t1 t12;
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Period Varor_period Period Varor_period
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Period_ Varor_period Period_ Varor_period
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9410 9412 9410 9412
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select t2.fld1,t22.fld1 from t2,t2 t22 where t2.fld1 >= 250501 and t2.fld1 <= 250505 and t22.fld1 >= 250501 and t22.fld1 <= 250505;
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fld1 fld1
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@ -1443,23 +1443,23 @@ explain select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t4 index NULL PRIMARY 1 NULL 12 Using index; Using temporary
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1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer (flat, BNL join)
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select t2.fld1,t2.companynr,fld3,period from t3,t2 where t2.fld1 = 38208 and t2.fld1=t3.t2nr and period = 1008 or t2.fld1 = 38008 and t2.fld1 =t3.t2nr and period = 1008;
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fld1 companynr fld3 period
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select t2.fld1,t2.companynr,fld3,period_ from t3,t2 where t2.fld1 = 38208 and t2.fld1=t3.t2nr and period_ = 1008 or t2.fld1 = 38008 and t2.fld1 =t3.t2nr and period_ = 1008;
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fld1 companynr fld3 period_
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038008 37 reporters 1008
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038208 37 Selfridge 1008
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select t2.fld1,t2.companynr,fld3,period from t3,t2 where (t2.fld1 = 38208 or t2.fld1 = 38008) and t2.fld1=t3.t2nr and period>=1008 and period<=1009;
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fld1 companynr fld3 period
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select t2.fld1,t2.companynr,fld3,period_ from t3,t2 where (t2.fld1 = 38208 or t2.fld1 = 38008) and t2.fld1=t3.t2nr and period_>=1008 and period_<=1009;
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fld1 companynr fld3 period_
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038008 37 reporters 1008
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038208 37 Selfridge 1008
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select t2.fld1,t2.companynr,fld3,period from t3,t2 where (t3.t2nr = 38208 or t3.t2nr = 38008) and t2.fld1=t3.t2nr and period>=1008 and period<=1009;
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fld1 companynr fld3 period
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select t2.fld1,t2.companynr,fld3,period_ from t3,t2 where (t3.t2nr = 38208 or t3.t2nr = 38008) and t2.fld1=t3.t2nr and period_>=1008 and period_<=1009;
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fld1 companynr fld3 period_
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038008 37 reporters 1008
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038208 37 Selfridge 1008
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select period from t1 where (((period > 0) or period < 10000 or (period = 1900)) and (period=1900 and period <= 1901) or (period=1903 and (period=1903)) and period>=1902) or ((period=1904 or period=1905) or (period=1906 or period>1907)) or (period=1908 and period = 1909);
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period
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select period_ from t1 where (((period_ > 0) or period_ < 10000 or (period_ = 1900)) and (period_=1900 and period_ <= 1901) or (period_=1903 and (period_=1903)) and period_>=1902) or ((period_=1904 or period_=1905) or (period_=1906 or period_>1907)) or (period_=1908 and period_ = 1909);
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period_
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9410
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select period from t1 where ((period > 0 and period < 1) or (((period > 0 and period < 100) and (period > 10)) or (period > 10)) or (period > 0 and (period > 5 or period > 6)));
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period
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select period_ from t1 where ((period_ > 0 and period_ < 1) or (((period_ > 0 and period_ < 100) and (period_ > 10)) or (period_ > 10)) or (period_ > 0 and (period_ > 5 or period_ > 6)));
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period_
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9410
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select a.fld1 from t2 as a,t2 b where ((a.fld1 = 250501 and a.fld1=b.fld1) or a.fld1=250502 or a.fld1=250503 or (a.fld1=250505 and a.fld1<=b.fld1 and b.fld1>=a.fld1)) and a.fld1=b.fld1;
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fld1
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@ -1716,8 +1716,8 @@ companynr companyname count(*)
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select t2.fld1,count(*) from t2,t3 where t2.fld1=158402 and t3.name=t2.fld3 group by t3.name;
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fld1 count(*)
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158402 4181
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select sum(Period)/count(*) from t1;
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sum(Period)/count(*)
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select sum(Period_)/count(*) from t1;
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sum(Period_)/count(*)
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9410.0000
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select companynr,count(price) as "count",sum(price) as "sum" ,abs(sum(price)/count(price)-avg(price)) as "diff",(0+count(price))*companynr as func from t3 group by companynr;
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companynr count sum diff func
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@ -2047,26 +2047,26 @@ t2nr count(*)
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select max(t2nr) from t3 where price=983543950;
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max(t2nr)
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41807
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select t1.period from t3 = t1 limit 1;
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period
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select t1.period_ from t3 = t1 limit 1;
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period_
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1001
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select t1.period from t1 as t1 limit 1;
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period
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select t1.period_ from t1 as t1 limit 1;
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period_
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9410
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select t1.period as "Nuvarande period" from t1 as t1 limit 1;
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Nuvarande period
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select t1.period_ as "Nuvarande period_" from t1 as t1 limit 1;
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Nuvarande period_
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9410
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select period as ok_period from t1 limit 1;
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select period_ as ok_period from t1 limit 1;
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ok_period
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9410
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select period as ok_period from t1 group by ok_period limit 1;
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select period_ as ok_period from t1 group by ok_period limit 1;
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ok_period
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9410
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select 1+1 as summa from t1 group by summa limit 1;
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summa
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2
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select period as "Nuvarande period" from t1 group by "Nuvarande period" limit 1;
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Nuvarande period
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select period_ as "Nuvarande period_" from t1 group by "Nuvarande period_" limit 1;
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Nuvarande period_
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9410
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show tables;
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Tables_in_test
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