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Added function to get dates from a given month

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This commit is contained in:
antoniocarlon 2018-06-26 14:39:04 +02:00
parent c6ef9b7f3a
commit b979167156
1 changed files with 51 additions and 6 deletions
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57
src/pg/sql/45_observatory_mvt.sql
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@ -263,7 +263,7 @@ BEGIN
END
$$ LANGUAGE plpgsql PARALLEL RESTRICTED;
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_DecodeCategory(category TEXT)
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_DecodeMCCategory(category TEXT)
RETURNS TEXT
AS $$
categories = {
@ -276,6 +276,54 @@ categories = {
return categories.get(category)
$$ LANGUAGE plpythonu;
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetMCDates(
mc_schema TEXT,
geo_level TEXT,
month_no TEXT DEFAULT NULL)
RETURNS TEXT[]
AS $$
DECLARE
mc_table TEXT;
where_clause TEXT DEFAULT '';
dates TEXT[];
BEGIN
mc_table := cdb_observatory.OBS_GetMCTable(mc_schema, geo_level);
IF month_no IS NOT NULL THEN
where_clause := format(
$query$
WHERE month LIKE '____-%1$s-__'
$query$, LPAD(month_no, 2, '0'));
END IF;
EXECUTE
format(
$query$
SELECT ARRAY_AGG(DISTINCT month) dates
FROM "%1$s".%2$s
%3$s
$query$, mc_schema, mc_table, where_clause)
INTO dates;
RETURN dates;
END
$$ LANGUAGE plpgsql PARALLEL RESTRICTED;
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetMCTable(mc_schema TEXT, geo_level TEXT)
RETURNS TEXT
AS $$
DECLARE
mc_table TEXT;
BEGIN
SELECT tablename from pg_tables
INTO mc_table
WHERE schemaname = mc_schema
AND tablename LIKE '%'||geo_level||'%';
RETURN mc_table;
END
$$ LANGUAGE plpgsql PARALLEL RESTRICTED;
CREATE OR REPLACE FUNCTION cdb_observatory.OBS_GetMCDOMVT(
z INTEGER, x INTEGER, y INTEGER,
geography_level TEXT,
@ -452,10 +500,7 @@ BEGIN
mc_geography_level := (string_to_array(geography_level, '.'))[array_length(string_to_array(geography_level, '.'), 1)];
END IF;
SELECT tablename from pg_tables
INTO mc_table
WHERE schemaname = mc_schema
AND tablename LIKE '%'||mc_geography_level||'%';
mc_table := cdb_observatory.OBS_GetMCTable(mc_schema, mc_geography_level);
FOREACH mc_category IN ARRAY mc_categories LOOP
FOREACH mc_month IN ARRAY mc_months LOOP
@ -480,7 +525,7 @@ BEGIN
numer_tablenames_mc := '"'||mc_schema||'".'||mc_table||' '||mc_table||'_'||mc_category||'_'||mc_month_slug;
geom_relations_mc := mc_table||'_'||mc_category||'_'||mc_month_slug||'.'||mc_geoid||'='||geom_geomref_colnames_qualified;
mc_table_categories := mc_table||'_'||mc_category||'_'||mc_month_slug||'.'||mc_category_column||'='''||cdb_observatory.OBS_DecodeCategory(mc_category)||''''||
mc_table_categories := mc_table||'_'||mc_category||'_'||mc_month_slug||'.'||mc_category_column||'='''||cdb_observatory.OBS_DecodeMCCategory(mc_category)||''''||
' AND '||mc_table||'_'||mc_category||'_'||mc_month_slug||'.'||mc_month_column||'='''||mc_month||'''';
geom_mc_outerjoins := coalesce(geom_mc_outerjoins, '')||' LEFT OUTER JOIN '||numer_tablenames_mc||' ON '||geom_relations_mc||' AND '||mc_table_categories;