add script to create views

create-views.sql

@@ -0,0 +1,167 @@
+---
+-- Name: getrandomsample(text, bigint); Type: FUNCTION; Schema: public; Owner: pgdb
+--
+
+CREATE OR REPLACE FUNCTION public.getrandomsample(p_table text, p_count bigint) RETURNS TABLE(ordinal integer, category text, translation character varying, reference text)
+    LANGUAGE plpgsql
+    AS $$
+DECLARE
+  v_estimate bigint;
+  v_percentage double precision;
+  v_table_id int;
+BEGIN
+SELECT num INTO v_table_id FROM (VALUES 
+    ('c_name', 10), ('c_z_kingdom', 15), ('c_a_kingdom', 20),
+    ('c_will', 25), ('c_bread', 30), ('c_because', 35),
+    ('c_forgive',40), ('c_debtors', 45), ('c_tempt', 50),
+    ('c_deliver', 60), ('c_glory', 70)
+    
+) AS q(name, num)
+WHERE name = p_table;
+SELECT pg_class.reltuples INTO v_estimate FROM pg_class WHERE pg_class.relname = p_table;
+SELECT 1000::double precision / v_estimate INTO v_percentage;
+RETURN QUERY EXECUTE 'SELECT '|| v_table_id ||' AS ordinal,
+  '''|| REPLACE(p_table, 'c_', '') ||''' AS category, translation, reference
+FROM ' || p_table || ' TABLESAMPLE bernoulli ('|| v_percentage ||')
+LIMIT ' || p_count;
+END
+$$;
+
+
+ALTER FUNCTION public.getrandomsample(p_table text, p_count bigint) OWNER TO pgdb;
+
+-
+-- Name: pg_random_view; Type: VIEW; Schema: public; Owner: pgdb
+--
+
+CREATE OR REPLACE VIEW public.pg_random_view AS
+ SELECT getrandomsample.ordinal,
+    getrandomsample.category,
+    getrandomsample.translation,
+    getrandomsample.reference,
+    public.gettext(getrandomsample.translation, (getrandomsample.reference)::character varying) AS txt
+   FROM public.getrandomsample('c_name'::text, (1)::bigint) getrandomsample(ordinal, category, translation, reference)
+UNION
+ SELECT getrandomsample.ordinal,
+    getrandomsample.category,
+    getrandomsample.translation,
+    getrandomsample.reference,
+    public.gettext(getrandomsample.translation, (getrandomsample.reference)::character varying) AS txt
+   FROM public.getrandomsample('c_bread'::text, (1)::bigint) getrandomsample(ordinal, category, translation, reference)
+UNION
+ SELECT getrandomsample.ordinal,
+    getrandomsample.category,
+    getrandomsample.translation,
+    getrandomsample.reference,
+    public.gettext(getrandomsample.translation, (getrandomsample.reference)::character varying) AS txt
+   FROM public.getrandomsample('c_debtors'::text, (1)::bigint) getrandomsample(ordinal, category, translation, reference)
+UNION
+ SELECT getrandomsample.ordinal,
+    getrandomsample.category,
+    getrandomsample.translation,
+    getrandomsample.reference,
+    public.gettext(getrandomsample.translation, (getrandomsample.reference)::character varying) AS txt
+   FROM public.getrandomsample('c_because'::text, (1)::bigint) getrandomsample(ordinal, category, translation, reference)
+UNION
+ SELECT getrandomsample.ordinal,
+    getrandomsample.category,
+    getrandomsample.translation,
+    getrandomsample.reference,
+    public.gettext(getrandomsample.translation, (getrandomsample.reference)::character varying) AS txt
+   FROM public.getrandomsample('c_tempt'::text, (1)::bigint) getrandomsample(ordinal, category, translation, reference)
+UNION
+ SELECT getrandomsample.ordinal,
+    getrandomsample.category,
+    getrandomsample.translation,
+    getrandomsample.reference,
+    public.gettext(getrandomsample.translation, (getrandomsample.reference)::character varying) AS txt
+   FROM public.getrandomsample('c_deliver'::text, (1)::bigint) getrandomsample(ordinal, category, translation, reference)
+UNION
+ SELECT getrandomsample.ordinal,
+    getrandomsample.category,
+    getrandomsample.translation,
+    getrandomsample.reference,
+    public.gettext(getrandomsample.translation, (getrandomsample.reference)::character varying) AS txt
+   FROM public.getrandomsample('c_glory'::text, (1)::bigint) getrandomsample(ordinal, category, translation, reference)
+UNION
+ SELECT getrandomsample.ordinal,
+    getrandomsample.category,
+    getrandomsample.translation,
+    getrandomsample.reference,
+    public.gettext(getrandomsample.translation, (getrandomsample.reference)::character varying) AS txt
+   FROM public.getrandomsample('c_will'::text, (1)::bigint) getrandomsample(ordinal, category, translation, reference)
+UNION
+ SELECT getrandomsample.ordinal,
+    getrandomsample.category,
+    getrandomsample.translation,
+    getrandomsample.reference,
+    public.gettext(getrandomsample.translation, (getrandomsample.reference)::character varying) AS txt
+   FROM public.getrandomsample('c_a_kingdom'::text, (1)::bigint) getrandomsample(ordinal, category, translation, reference)
+UNION
+ SELECT getrandomsample.ordinal,
+    getrandomsample.category,
+    getrandomsample.translation,
+    getrandomsample.reference,
+    public.gettext(getrandomsample.translation, (getrandomsample.reference)::character varying) AS txt
+   FROM public.getrandomsample('c_z_kingdom'::text, (1)::bigint) getrandomsample(ordinal, category, translation, reference)
+  ORDER BY 1;
+
+ALTER TABLE public.pg_random_view OWNER TO pgdb;
+
+
+--
+-- Name: pg_random_view_default_if_null; Type: VIEW; Schema: public; Owner: pgdb
+--
+
+CREATE OR REPLACE VIEW public.pg_random_view_default_if_null AS
+ SELECT subq.category,
+        CASE
+            WHEN (subq.txt IS NULL) THEN public.getdefaulttranslation()
+            ELSE subq.translation
+        END AS translation,
+    subq.reference,
+        CASE
+            WHEN (subq.txt IS NULL) THEN public.getdefaulttext((subq.reference)::character varying)
+            ELSE subq.txt
+        END AS txt
+   FROM public.pg_random_view subq;
+
+ALTER TABLE public.pg_random_view_default_if_null OWNER TO pgdb;
+
+
+--
+-- Name: pg_view; Type: VIEW; Schema: public; Owner: pgdb
+--
+
+CREATE OR REPLACE VIEW public.pg_view AS
+ SELECT reference.translation,
+    reference.reference,
+    public.gettext(reference.translation, (reference.reference)::character varying) AS txt
+   FROM public.reference;
+
+ALTER TABLE public.pg_view OWNER TO pgdb;
+
+
+--
+-- Name: pg_view_default_if_null; Type: VIEW; Schema: public; Owner: pgdb
+--
+
+CREATE OR REPLACE VIEW public.pg_view_default_if_null AS
+ SELECT
+        CASE
+            WHEN (subq.txt IS NULL) THEN public.getdefaulttranslation()
+            ELSE subq.translation
+        END AS translation,
+    subq.reference,
+        CASE
+            WHEN (subq.txt IS NULL) THEN public.getdefaulttext((subq.reference)::character varying)
+            ELSE subq.txt
+        END AS txt
+   FROM ( SELECT reference.translation,
+            reference.reference,
+            public.gettext(reference.translation, (reference.reference)::character varying) AS txt
+           FROM public.reference) subq;
+
+ALTER TABLE public.pg_view_default_if_null OWNER TO pgdb;
+
+