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Change the overview table naming scheme

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The scheme is changed from table_ovN to _vovw_N_table for
lower collision probability.
Also future naming changes will be easier by using the functions
_CDB_OverviewTableDiscriminator, _CDB_OverviewTableName,
_CDB_IsOverviewTableOf, etc.
This commit is contained in:
Javier Goizueta
2016-01-26 13:20:28 +01:00
parent 1ebaeb76ac
commit 474de01757
3 changed files with 104 additions and 39 deletions
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44
test/CDB_OverviewsTest_expect
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@@ -6,35 +6,35 @@ INSERT 0 1114
{base_bare_t_ov5,base_bare_t_ov4,base_bare_t_ov3,base_bare_t_ov2,base_bare_t_ov1,base_bare_t_ov0}
{_vovw_5_base_bare_t,_vovw_4_base_bare_t,_vovw_3_base_bare_t,_vovw_2_base_bare_t,_vovw_1_base_bare_t,_vovw_0_base_bare_t}
125
number,int_number,name,start
AVG(number)::double precision AS number,AVG(int_number)::integer AS int_number,CASE count(*) WHEN 1 THEN string_agg(name,'/') ELSE '*' END::text AS name,CASE count(*) WHEN 1 THEN MIN(start) ELSE NULL END::date AS start
AVG(tab.number)::double precision AS number,AVG(tab.int_number)::integer AS int_number,CASE count(*) WHEN 1 THEN string_agg(tab.name,'/') ELSE '*' END::text AS name,CASE count(*) WHEN 1 THEN MIN(tab.start) ELSE NULL END::date AS start
{base_t_ov5,base_t_ov4,base_t_ov3,base_t_ov2,base_t_ov1,base_t_ov0}
{_vovw_5_base_t,_vovw_4_base_t,_vovw_3_base_t,_vovw_2_base_t,_vovw_1_base_t,_vovw_0_base_t}
125
(base_t,0,base_t_ov0)
(base_t,1,base_t_ov1)
(base_t,2,base_t_ov2)
(base_t,3,base_t_ov3)
(base_t,4,base_t_ov4)
(base_t,5,base_t_ov5)
(base_bare_t,0,base_bare_t_ov0)
(base_bare_t,1,base_bare_t_ov1)
(base_bare_t,2,base_bare_t_ov2)
(base_bare_t,3,base_bare_t_ov3)
(base_bare_t,4,base_bare_t_ov4)
(base_bare_t,5,base_bare_t_ov5)
(base_t,0,base_t_ov0)
(base_t,1,base_t_ov1)
(base_t,2,base_t_ov2)
(base_t,3,base_t_ov3)
(base_t,4,base_t_ov4)
(base_t,5,base_t_ov5)
(base_t,0,_vovw_0_base_t)
(base_t,1,_vovw_1_base_t)
(base_t,2,_vovw_2_base_t)
(base_t,3,_vovw_3_base_t)
(base_t,4,_vovw_4_base_t)
(base_t,5,_vovw_5_base_t)
(base_bare_t,0,_vovw_0_base_bare_t)
(base_bare_t,1,_vovw_1_base_bare_t)
(base_bare_t,2,_vovw_2_base_bare_t)
(base_bare_t,3,_vovw_3_base_bare_t)
(base_bare_t,4,_vovw_4_base_bare_t)
(base_bare_t,5,_vovw_5_base_bare_t)
(base_t,0,_vovw_0_base_t)
(base_t,1,_vovw_1_base_t)
(base_t,2,_vovw_2_base_t)
(base_t,3,_vovw_3_base_t)
(base_t,4,_vovw_4_base_t)
(base_t,5,_vovw_5_base_t)
ERROR: relation "base_t_ov5" does not exist
LINE 1: SELECT count(*) FROM base_t_ov5;
ERROR: relation "_vovw_5_base_t" does not exist
LINE 1: SELECT count(*) FROM _vovw_5_base_t;
^
DROP TABLE
DROP TABLE