chore: Added indexing in the database

Author: Redume

chart/database/schemas/data.sql

@@ -3,4 +3,16 @@ CREATE TABLE if not exists currency(
     conv_currency TEXT NOT NULL,
     rate FLOAT NOT NULL,
     date DATE NOT NULL
-);
+);
+
+CREATE INDEX IF NOT EXISTS currency_from_currency_conv_currency_idx
+    ON public.currency USING btree
+    (from_currency COLLATE pg_catalog."default" ASC NULLS LAST, conv_currency COLLATE pg_catalog."default" ASC NULLS LAST)
+    WITH (deduplicate_items=True)
+    TABLESPACE pg_default;
+
+CREATE INDEX IF NOT EXISTS currency_date_idx
+    ON public.currency USING btree
+    (date ASC NULLS LAST)
+    WITH (deduplicate_items=True)
+    TABLESPACE pg_default;

shared/database/data/schema.sql

@@ -3,4 +3,16 @@ CREATE TABLE IF NOT EXISTS currency(
     conv_currency TEXT NOT NULL,
     rate FLOAT NOT NULL,
     date DATE NOT NULL
-);
+);
+
+CREATE INDEX IF NOT EXISTS currency_from_currency_conv_currency_idx
+    ON public.currency USING btree
+    (from_currency COLLATE pg_catalog."default" ASC NULLS LAST, conv_currency COLLATE pg_catalog."default" ASC NULLS LAST)
+    WITH (deduplicate_items=True)
+    TABLESPACE pg_default;
+
+CREATE INDEX IF NOT EXISTS currency_date_idx
+    ON public.currency USING btree
+    (date ASC NULLS LAST)
+    WITH (deduplicate_items=True)
+    TABLESPACE pg_default;