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3399f2b9a5
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91 Commits

Author SHA1 Message Date
Javier Goizueta
3399f2b9a5 Fix max overviews level usage 
Note that _CDB_Feature_Density_Ref_Z_Strategy returns the first
level for which overviews should not be used, and that in some
cases _CDB_Feature_Density should look beyond the max level to
compute a feature density estimate.
 2016-05-25 14:00:55 +02:00
Javier Goizueta
803b3671d0 Fixes for feature density computation 
* The initial iteration of the recursive feature density query shouldn't
  start beyond the maximum level
* Correct off-by-one limit the rest of iterations
 2016-05-25 11:21:12 +02:00
Javier Goizueta
c3fada29a8 Comment how the max overview level is defined 2016-05-25 11:07:06 +02:00
Javier Goizueta
86e5f6d317 Limit the maximum overview level to 23 
Fixes #257

23 = 32 bits per integer - 1 sign bit - 8 bits px/tile
 2016-05-24 18:18:58 +02:00
Javier Goizueta
8d7860dc7a Fixes #252 2016-05-09 11:54:56 +02:00
Javier Goizueta
b5427c65c8 Drop aggregate to be defined 
Otherwise future versions will fail to recreate the aggregate
 2016-04-29 08:46:01 +02:00
Javier Goizueta
a067cc7da1 Generate stats used to identify category columns in overviews if needed 
This only generates the stats if no stats are available for a table.
This doesn't warrant that the stats are up to date or accurate.
 2016-04-27 15:06:09 +02:00
Javier Goizueta
2c43943df6 Fix syntax 2016-04-26 18:27:52 +02:00
Javier Goizueta
417cbe7902 Fix category columns aggregation in overviews 
Overviews are created in cascade, each one from the inmediate
lower level, but the stats to decide if a column is a category
should be taken always from the base table.
 2016-04-26 18:02:25 +02:00
Javier Goizueta
9a73703954 Use mode to aggregate categorical columns in overviews 
Fixes #245
 2016-04-26 15:15:24 +02:00
Javier Goizueta
f7cce21eb7 Merge pull request #242 from CartoDB/240-overviews-pixels 
Adjust overview points to pixel centers
 2016-04-25 17:30:25 +02:00
Javier Goizueta
11ad45306f Remove unneeded pg_catalog schema name 2016-04-25 16:30:58 +02:00
Javier Goizueta
3c12cf629f Optimize overview pixel adjustment for integer-pixel cells 2016-04-25 13:53:59 +02:00
Javier Goizueta
7b2100b51e Adjust overview coordinates to pixel centers 
This makes the adjustment for all grid sizes, not only
for integral number of pixels.
 2016-04-25 13:33:43 +02:00
Javier Goizueta
580ec38ab8 Adjust overview clustered point to pixel centers 
Fixes #240
 2016-04-23 15:07:06 +02:00
Javier Goizueta
06ebb27160 Optimize internal funcion _cdb_unlimited_text_column 2016-04-18 18:50:37 +02:00
Javier Goizueta
ef43623f77 Remove unneeded variable 2016-04-15 17:58:03 +02:00
Javier Goizueta
1b0f77aa96 Always retain single-valued aggregated texts 
This makes columns which have the same value in a group to be aggregated
maintain that value (rather than replacing it by the multiple-value
indicator *) whatever the group value is. (Previously this happend
only for small groups)
 2016-04-15 17:49:00 +02:00
Javier Goizueta
45f063d469 Aggregate small number of text items in overviews 
Instead of nulling text fields for non-singleton aggregated records
concatenate distinct text values when they're few (5 or less).
Fixes #231
 2016-04-15 12:37:16 +02:00
Javier Goizueta
176d69d09e Fix AVG computation in overview tables 
Fixes #232
Averages of averages are not equal to overall averages.
 2016-04-15 10:48:08 +02:00
Javier Goizueta
9fdbfda60a Merge pull request #228 from CartoDB/225-no-centroid-master 
Use cell centers, not cluster centroids when grouping points
 2016-04-15 10:06:44 +02:00
Javier Goizueta
9a3d93976c Merge pull request #227 from CartoDB/226-add_count_aggregated_features 
Include and aggregate _vovw_count column to count aggregated features
 2016-04-15 10:06:05 +02:00
Javier Goizueta
46b45f6dd4 Merge pull request #224 from CartoDB/223-fix-dropoverviews 
Fix CDB_DropOverviews and CDB_Overviews problems
 2016-04-15 10:05:28 +02:00
Carla Iriberri
fd14750ce5 Rename _vovw_count to _feature_count 2016-04-14 18:23:09 +02:00
Javier Goizueta
c595e45c11 Add _vovw_count columnt to tables for which overviews are created 
Initially we planned to add this column to the queries sent to the
tiler only, but that makes the column hard to access from the editor.
 2016-04-14 17:32:18 +02:00
Javier Goizueta
f785e71d3b Fix: numeric is a valid numeric column type 
Actually this is the type of aggregated _vovw_count columns
 2016-04-14 15:46:03 +02:00
Carla
14b8cd7d99 Set default value to 1 and remove typo line 2016-04-14 12:12:17 +02:00
Carla
1a571c8a9c Set tolerance to 1 pixel 2016-04-14 11:13:59 +02:00
Carla Iriberri
8f44f5347a Fix indent for code clarity 2016-04-13 17:51:30 +02:00
Carla Iriberri
f96163265b Fix bug for tables without geom or with no potential overviews 
If the table doesn't have geometries but the createoverviews function is
called, the current geometry type checks won't work because "null" will
not give a boolean value in the type comparisons.

Also, if the createoverviews function is called over a simple table with
would not require overviews according to the strategies it is handled
correctly.
 2016-04-13 17:49:38 +02:00
Javier Goizueta
1c67214b09 Use cell centers, not cluster centroids when grouping points 
Fixes #225
 2016-04-13 11:14:09 +02:00
Carla Iriberri
16d08ef52b Include and aggregate _vovw_count column to count aggregated features 2016-04-12 11:10:55 +02:00
Javier Goizueta
15ac9a2cd9 Remove unneeded code 2016-04-07 10:30:10 +02:00
Javier Goizueta
ee61d46100 💄 rename variable for clarity 2016-04-07 10:24:02 +02:00
Javier Goizueta
49e7094c8a Make CDB_CreateOverview usable by superuser 
CDB_CreateOverview had to be executed with the user role
corresponding to the owner of the table; now it can be executed
by the postgres user.
 2016-04-07 07:52:58 +02:00
Javier Goizueta
fb910be12f Fix conversion of regclass to indentifier 2016-04-07 07:07:20 +02:00
Javier Goizueta
34c39662ec Replace use of CDB_UserTables in CDB_Overviews 
Use a function that returns reclasses and schema names properly instead.
 2016-04-07 00:07:45 +02:00
Javier Goizueta
84cac16d1c Temporary fix 2016-04-06 22:05:00 +02:00
Javier Goizueta
c1fc07d2ac Fix typo 
This function isn't beint actively used; should consider removing it
or testing it properly
 2016-04-06 18:58:37 +02:00
Javier Goizueta
5c3c0f5fc9 Fix bug in CDB_DropOverviews 
Fixes #223
 2016-04-06 18:57:52 +02:00
Javier Goizueta
06bb669d4c Add comment 
Clarify the reason why some functions are dropped at the
end of the file and not where their new definitions are.
 2016-04-05 13:22:07 +02:00
Javier Goizueta
00a3d6e650 Fix upgrades from prior versions 2016-04-05 13:10:00 +02:00
Javier Goizueta
f0ff197c56 Merge branch 'master' into 219-overviews-tolerance 
# Conflicts:
#	scripts-available/CDB_Overviews.sql
#	test/CDB_OverviewsTest_expect
 2016-04-05 13:08:22 +02:00
Javier Goizueta
57c32332e2 New function CDB_CreateOverviewsWithToleranceInPixels 
This function allows defining the previously fixed parameter grid_px.
The lim parameter used to define the reference Z level is also
correlated to this value.

Fixes #219
 2016-04-04 19:21:10 +02:00
Javier Goizueta
3c71eecbae Fix cases that require explicit schema name 
This allows using overview functions in situations where
the base tables require being qualified with the schema name.
 2016-04-04 17:45:20 +02:00
Javier Goizueta
c0262a05eb Fix CDB_Overviews for cases that require explicit schema name 
Fixes #218
 2016-04-04 17:02:59 +02:00
Javier Goizueta
4074173c05 Add support for boolean columns in overview creation 2016-03-21 12:58:29 +01:00
Javier Goizueta
5285943dbf Fix function declaration for create_from_unpackaged.sh use 
The script create_from_unpackaged.sh does not support
function declarations where the signature (name and parameter list
of the function, including parentheses) is not on a single line.
 2016-02-01 18:56:55 +01:00
Javier Goizueta
00bd302f01 Avoid creating GridCluster overviews for non-point datasets 2016-01-29 16:19:35 +01:00
Javier Goizueta
93d4a6ead0 Restrict SECURITY DEFINER to overview registration 
And check it is applied only overview tables with valid names
 2016-01-28 17:04:06 +01:00