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Nyall Dawson 2e5257372b [FEATURE] Add order by support to expression aggregate and concatenation functions 
Because certain aggregates and concatenation requires results in
a certain order, this change allows specific control of the order
features are added to the aggregate during an expression evaluation.

E.g.

concatenate("Station",concatenator:=',', order_by:="Station")

will give a comma separated list of station names in alphabetical
order, rather than layer feature order.

Sponsored by SMEC/SJ
2019-05-10 06:23:56 +10:00
..
$area
Replace "eg" by "e.g." or "for example"
2016-12-30 00:03:22 +01:00
$atlasfeature
…
$atlasfeatureid
…
$atlasgeometry
…
$currentfeature
…
$feature
…
$geometry
…
$id
…
$length
Replace "eg" by "e.g." or "for example"
2016-12-30 00:03:22 +01:00
$map
…
$numfeatures
…
$numpages
…
$page
…
$perimeter
Replace "eg" by "e.g." or "for example"
2016-12-30 00:03:22 +01:00
$rownum
…
$scale
Precise that scale function returns the denominator and not the scale itself
2016-05-18 10:43:19 +02:00
$x
…
$x_at
Expression calculator: clarify documentation for x_at() and y_at()
2018-11-29 23:26:43 +13:00
$y
…
$y_at
Expression calculator: clarify documentation for x_at() and y_at()
2018-11-29 23:26:43 +13:00
abs
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acos
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age
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aggregate
[FEATURE] Add order by support to expression aggregate and concatenation functions
2019-05-10 06:23:56 +10:00
Aggregates
Add missing function help (fix #15264)
2016-07-19 12:12:32 +10:00
AND
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angle_at_vertex
[expression] Negative index support to point_n(), angle_at_vertex(), distance_to_vertex() functions
2019-03-13 11:20:04 +07:00
area
…
array
Update map and array examples
2018-08-24 14:04:27 +02:00
array_agg
[FEATURE] Add order by support to expression aggregate and concatenation functions
2019-05-10 06:23:56 +10:00
array_all
[FEATURE][expression] New array_all() function to check whether
2019-04-09 11:44:00 +07:00
array_append
Update map and array examples
2018-08-24 14:04:27 +02:00
array_cat
Update map and array examples
2018-08-24 14:04:27 +02:00
array_contains
Add expression functions for arrays and maps
2016-09-20 13:22:55 +02:00
array_distinct
Update map and array examples
2018-08-24 14:04:27 +02:00
array_filter
Fix example display
2018-08-27 21:35:39 +10:00
array_find
Add expression functions for arrays and maps
2016-09-20 13:22:55 +02:00
array_first
array docs
2017-07-07 13:01:17 +02:00
array_foreach
Update map and array examples
2018-08-24 14:04:27 +02:00
array_get
Add expression functions for arrays and maps
2016-09-20 13:22:55 +02:00
array_insert
Update map and array examples
2018-08-24 14:04:27 +02:00
array_intersect
corrections
2018-05-14 15:13:22 +02:00
array_last
array docs
2017-07-07 13:01:17 +02:00
array_length
Add expression functions for arrays and maps
2016-09-20 13:22:55 +02:00
array_prepend
Update map and array examples
2018-08-24 14:04:27 +02:00
array_remove_all
Update map and array examples
2018-08-24 14:04:27 +02:00
array_remove_at
Update map and array examples
2018-08-24 14:04:27 +02:00
array_reverse
Update map and array examples
2018-08-24 14:04:27 +02:00
array_slice
Update map and array examples
2018-08-24 14:04:27 +02:00
array_sort
[FEATURE][expression] Brand new array_sort() function
2018-12-20 11:47:16 +07:00
array_to_string
Fix array_to_string description and add default value example
2018-08-24 11:54:34 +02:00
Arrays
Added new help files to the expression function groups of Arrays and Maps
2017-08-04 20:30:37 +02:00
asin
…
atan
…
atan2
…
attribute
[FEATURE][expressions] Simplified variant of "attribute" function
2019-02-23 05:20:52 +10:00
azimuth
…
base_file_name
[FEATURE] Expression functions which return file info
2019-04-27 17:24:37 +10:00
boundary
Replace "eg" by "e.g." or "for example"
2016-12-30 00:03:22 +01:00
bounds
…
bounds_height
…
bounds_width
…
buffer
add optional segments argument
2018-05-10 16:58:12 +02:00
buffer_by_m
[FEATURE] Add expression functions for tapered and variable
2018-05-01 06:16:01 +10:00
CASE
replace three dots with ellipsises in translation strings
2018-10-27 19:06:37 +02:00
ceil
…
centroid
…
char
Add missing function help (fix #15264)
2016-07-19 12:12:32 +10:00
clamp
…
closest_point
expression help: support optional parameters and defaults
2018-05-10 20:15:39 +02:00
coalesce
[spellcheck] properly look into various cases and add more fixes"
2017-01-16 16:39:20 +01:00
collect
[FEATURE] support aggregation of geometry
2016-08-24 08:39:05 +07:00
Color
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color_cmyk
…
color_cmyka
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color_grayscale_average
[FEATURE] color_grayscale_average() and color_mix_rgb() expression functions (#6554)
2018-03-07 11:59:52 +07:00
color_hsl
…
color_hsla
…
color_hsv
…
color_hsva
…
color_mix_rgb
fix translation strings
2018-03-09 21:47:49 +01:00
color_part
Replace "eg" by "e.g." or "for example"
2016-12-30 00:03:22 +01:00
color_rgb
…
color_rgba
…
combine
…
concat
…
concatenate
[FEATURE] Add order by support to expression aggregate and concatenation functions
2019-05-10 06:23:56 +10:00
concatenate_unique
[FEATURE] Add order by support to expression aggregate and concatenation functions
2019-05-10 06:23:56 +10:00
Conditionals
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Conditions
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contains
first example deleted, cause it is for combine function
2018-11-30 07:39:57 +10:00
Conversions
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convex_hull
first example deleted, cause it is for combine function
2018-11-30 07:39:57 +10:00
cos
…
count
…
count_distinct
…
count_missing
…
create_ramp
[FEATURE] create_ramp() expression function
2017-05-29 16:31:53 +07:00
crosses
…
current_value
Updated docs for current_value function
2018-05-15 12:45:43 +02:00
Custom
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darker
…
Date and Time
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day
…
day_of_week
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decode_uri
Double escape for JSON and C++
2018-12-18 17:04:50 +01:00
degrees
…
difference
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disjoint
…
distance
…
distance_to_vertex
[expression] Negative index support to point_n(), angle_at_vertex(), distance_to_vertex() functions
2019-03-13 11:20:04 +07:00
end_point
…
env
translation string fixes
2017-03-05 11:37:57 +01:00
epoch
[FEATURE] epoch() expression function (#4151)
2017-02-22 17:31:44 +07:00
eval
replace three dots with ellipsises in translation strings
2018-10-27 19:06:37 +02:00
exp
…
extend
[FEATURE] New expression function 'extend'
2016-10-31 07:56:24 +10:00
exterior_ring
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extrude
…
Field
Replace "double click" and "doubleclick" by double-click
2017-07-07 01:26:38 +02:00
Fields and Values
…
file_exists
[FEATURE] Expression functions which return file info
2019-04-27 17:24:37 +10:00
file_name
Fix expression function examples
2019-04-28 15:47:35 +10:00
file_path
Fix expression function examples
2019-04-28 15:47:35 +10:00
file_size
[FEATURE] Expression functions which return file info
2019-04-27 17:24:37 +10:00
file_suffix
Fix expression function examples
2019-04-28 15:47:35 +10:00
flip_coordinates
Add missing expression help
2018-04-05 06:35:13 +10:00
floor
…
force_rhr
[FEATURE] force_rhr expression function
2018-11-09 19:06:48 +10:00
format
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format_date
…
format_number
…
from_json
Rename json functions to postgres names
2019-01-18 17:45:12 +07:00
Fuzzy Matching
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General
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generate_series
Merge branch 'master' into patch-2
2018-08-24 16:05:15 +02:00
geom_from_gml
…
geom_from_wkt
…
geom_to_wkt
…
geometry
…
geometry_n
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GeometryGroup
…
get_feature
…
get_feature_by_id
get_feature_by_id docs
2017-07-07 13:01:17 +02:00
hamming_distance
…
hausdorff_distance
Typo corrected
2017-09-05 15:28:40 +02:00
hour
…
hstore_to_map
[FEATURE] hstore_to_map() / map_to_hstore() expression functions
2018-09-14 11:21:40 +07:00
if
…
ILIKE
[BUGFIX] Expression in like escape % and _
2016-09-30 14:27:53 +02:00
IN
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inclination
add missing help for inclination
2017-08-01 21:48:03 +02:00
interior_ring_n
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intersection
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intersects
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intersects_bbox
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iqr
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IS
…
IS NOT
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is_closed
…
is_directory
[FEATURE] Expression functions which return file info
2019-04-27 17:24:37 +10:00
is_file
[FEATURE] Expression functions which return file info
2019-04-27 17:24:37 +10:00
is_layer_visible
[FEATURE] expression engine's is_layer_visible() (#4045)
2017-01-25 11:47:26 +07:00
is_selected
Improve num_selected and is_selected function help
2016-11-09 08:45:53 +01:00
item_variables
[FEATURE] item_variables expression function inside compositions
2017-01-11 12:26:32 +10:00
json_to_map
[FEATURE] json_to_map() / map_to_json() expression functions
2018-09-14 11:21:40 +07:00
layer_property
Add path to layer_property expression function
2018-12-18 13:47:46 +01:00
left
…
length
…
levenshtein
…
lighter
…
LIKE
[BUGFIX] Expression in like escape % and _
2016-09-30 14:27:53 +02:00
line_interpolate_angle
[FEATURE] New expression functions for angle/distance interpolation
2016-08-29 11:02:17 +10:00
line_interpolate_point
[FEATURE] Add linear referencing functions to expression engine
2016-08-21 20:59:57 +10:00
line_locate_point
[FEATURE] Add linear referencing functions to expression engine
2016-08-21 20:59:57 +10:00
line_merge
[FEATURE] API + expression function for merging linestrings
2016-07-28 20:33:27 +10:00
line_substring
[FEATURE] line_substring function
2018-08-15 14:01:59 +10:00
ln
…
log
…
log10
…
longest_common_substring
Replace "eg" by "e.g." or "for example"
2016-12-30 00:03:22 +01:00
lower
…
lpad
Update lpad and rpad functions description
2018-01-18 16:43:43 +10:00
m
…
majority
…
make_circle
add missing optional flag in some qgs expression helps
2018-10-25 18:20:23 +10:00
make_ellipse
add missing optional flag in some qgs expression helps
2018-10-25 18:20:23 +10:00
make_line
…
make_point
add missing optional flag in some qgs expression helps
2018-10-25 18:20:23 +10:00
make_point_m
…
make_polygon
add some optional flags in make_polygon expression
2019-02-20 05:41:26 +10:00
make_rectangle_3points
[feature] Add expression for square by diagonal and rectangle from 3 points
2019-01-17 03:42:20 +11:00
make_regular_polygon
add missing optional flag in some qgs expression helps
2018-10-25 18:20:23 +10:00
make_square
[feature] Add expression for square by diagonal and rectangle from 3 points
2019-01-17 03:42:20 +11:00
make_triangle
Add missing make_triangle function help. Fix #16406
2018-02-23 14:32:43 +01:00
map
Update map and array examples
2018-08-24 14:04:27 +02:00
Map Layers
Add items for project map layers and relations to expression builder
2017-07-31 08:08:18 +10:00
map_akeys
Update map and array examples
2018-08-24 14:04:27 +02:00
map_avals
Update map and array examples
2018-08-24 14:04:27 +02:00
map_concat
Update map and array examples
2018-08-24 14:04:27 +02:00
map_delete
Update map and array examples
2018-08-24 14:04:27 +02:00
map_exist
Add expression functions for arrays and maps
2016-09-20 13:22:55 +02:00
map_get
Add expression functions for arrays and maps
2016-09-20 13:22:55 +02:00
map_insert
Update map and array examples
2018-08-24 14:04:27 +02:00
map_to_hstore
[FEATURE] hstore_to_map() / map_to_hstore() expression functions
2018-09-14 11:21:40 +07:00
map_to_json
[FEATURE] json_to_map() / map_to_json() expression functions
2018-09-14 11:21:40 +07:00
Maps
Added new help files to the expression function groups of Arrays and Maps
2017-08-04 20:30:37 +02:00
Math
…
max
Add example with NULL value
2018-01-03 06:57:10 +01:00
max_length
…
maximum
…
mean
…
median
…
min
Add example with NULL value
2018-01-03 06:57:10 +01:00
min_length
…
minimal_circle
add missing optional flag in some qgs expression helps
2018-10-25 18:20:23 +10:00
minimum
…
minority
…
minute
…
month
…
nodes_to_points
add missing optional flag in some qgs expression helps
2018-10-25 18:20:23 +10:00
NOT
…
now
Add note about now() being static to help
2018-08-25 13:52:33 +02:00
NULL
…
nullif
Fix JSON
2019-01-08 11:36:16 +01:00
num_geometries
corrections
2018-05-14 15:13:22 +02:00
num_interior_rings
…
num_points
…
num_rings
…
num_selected
Improve num_selected and is_selected function help
2016-11-09 08:45:53 +01:00
offset_curve
Spell check 'mitre' -> 'miter' (i.e. use en-us variation)
2017-08-07 18:08:57 +10:00
op_asterisk
…
op_concat
…
op_div
…
op_eq
…
op_exp
…
op_ge
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op_gt
…
op_index
More square brackets
2018-12-19 05:21:49 +10:00
op_le
…
op_lt
…
op_minus
…
op_modulo
…
op_ne
…
op_plus
…
op_regex
Add missing ~ operator to expression builder
2017-01-19 16:03:48 +10:00
Operators
…
OR
…
order_parts
…
oriented_bbox
initial commit
2017-09-08 08:06:21 +02:00
overlaps
…
parameter
Move algorithm expression context generation to QgsProcessingAlgorithm
2017-06-06 11:25:09 +10:00
perimeter
…
pi
…
point_n
[expression] Negative index support to point_n(), angle_at_vertex(), distance_to_vertex() functions
2019-03-13 11:20:04 +07:00
point_on_surface
…
pole_of_inaccessibility
[FEATURE] pole_of_inaccessibility expression function
2016-11-14 15:52:41 +10:00
project
…
project_color
…
q1
…
q3
…
radians
…
ramp_color
fix function call in example
2018-12-13 18:18:04 +02:00
rand
…
randf
…
range
…
raster_statistic
[FEATURE] raster_statistic expression function for retrieving
2016-11-22 12:07:25 +10:00
raster_value
[FEATURE][expression] add raster_value() function (#7487)
2018-07-27 12:56:04 +07:00
Recent
…
Record
…
regexp_match
Replace "eg" by "e.g." or "for example"
2016-12-30 00:03:22 +01:00
regexp_matches
Update map and array examples
2018-08-24 14:04:27 +02:00
regexp_replace
Replace "eg" by "e.g." or "for example"
2016-12-30 00:03:22 +01:00
regexp_substr
Replace "eg" by "e.g." or "for example"
2016-12-30 00:03:22 +01:00
relate
…
relation_aggregate
[FEATURE] Add order by support to expression aggregate and concatenation functions
2019-05-10 06:23:56 +10:00
Relations
Add items for project map layers and relations to expression builder
2017-07-31 08:08:18 +10:00
replace
[expression] further improve replace() to support a map argument
2016-10-27 11:33:28 +07:00
represent_value
Single parameter version of represent_value
2017-09-29 10:58:18 +02:00
reverse
…
right
…
round
…
rpad
Update lpad and rpad functions description
2018-01-18 16:43:43 +10:00
scale_exp
…
scale_linear
…
second
…
segments_to_lines
…
set_color_part
Replace "eg" by "e.g." or "for example"
2016-12-30 00:03:22 +01:00
shortest_line
expression help: support optional parameters and defaults
2018-05-10 20:15:39 +02:00
simplify
[FEATURE] New simplify + smoothing expression functions
2016-09-03 21:52:06 +10:00
simplify_vw
Replace "eg" by "e.g." or "for example"
2016-12-30 00:03:22 +01:00
sin
…
single_sided_buffer
Spell check 'mitre' -> 'miter' (i.e. use en-us variation)
2017-08-07 18:08:57 +10:00
smooth
[needs-docs] geometry smooth algorithm now also retains and smooths z/m values
2018-03-30 08:59:00 +11:00
soundex
…
sqlite_fetch_and_increment
Improve expression documentation for sqlite_fetch_and_increment
2019-01-11 10:53:17 +01:00
sqrt
…
start_point
…
stdev
…
String
…
string_to_array
Update map and array examples
2018-08-24 14:04:27 +02:00
strpos
…
substr
fix substr help (fixes #21192)
2019-02-07 11:17:57 +01:00
sum
…
sym_difference
…
tan
…
tapered_buffer
[FEATURE] Add expression functions for tapered and variable
2018-05-01 06:16:01 +10:00
title
…
to_date
…
to_datetime
…
to_dm
[FEATURE] add conversion from float to DMS format
2018-09-14 05:18:38 +10:00
to_dms
[FEATURE] add conversion from float to DMS format
2018-09-14 05:18:38 +10:00
to_int
…
to_interval
…
to_json
Rename json functions to postgres names
2019-01-18 17:45:12 +07:00
to_real
…
to_string
…
to_time
…
touches
…
transform
…
translate
…
trim
…
try
[expression] Add try() function to provide a way to detect and handle
2019-02-20 06:27:43 +07:00
union
…
upper
…
uuid
…
var
…
Variables
…
wedge_buffer
[FEATURE] Add wedge_buffer expression function
2018-04-24 10:07:51 +12:00
week
…
with_variable
Used named parameters for with_variable function
2018-08-23 21:15:32 +10:00
within
…
wordwrap
add missing optional flag in some qgs expression helps
2018-10-25 18:20:23 +10:00
x
Add more example
2016-05-24 12:21:00 +02:00
x_max
…
x_min
…
y
Add more example
2016-05-24 12:24:12 +02:00
y_max
…
y_min
…
year
…
z
…