feat: added sql function get_income_expense

Author: Antenaina2002

src/main/resources/migrations/banking_full_script.txt

@@ -0,0 +1,65 @@
+DROP DATABASE IF EXISTS banking;
+
+CREATE DATABASE banking;
+
+\c banking;
+
+
+CREATE TABLE IF NOT EXISTS "account" (
+  "id" bigserial PRIMARY KEY,
+  "net_salary" double precision,
+  "account_number" varchar(255) UNIQUE,
+  "firstname" varchar(255),
+  "account_type" text,
+  "bank" varchar(255),
+  "birthdate" date,
+  "updated_at" timestamp DEFAULT now(),
+  "lastname" varchar(255)
+);
+
+CREATE TABLE IF NOT EXISTS "account_balance" (
+ "id" bigserial PRIMARY KEY,
+ "checked_at" timestamp DEFAULT now(),
+ "id_account" bigint NOT NULL REFERENCES "account"(id) ON DELETE CASCADE,
+ "current_balance" double precision
+);
+
+CREATE TABLE IF NOT EXISTS "category" (
+ "id" bigserial PRIMARY KEY,
+ "only_on" text NOT NULL,
+ "comments" text,
+ "name" varchar(255) NOT NULL UNIQUE,
+ "id_account" bigint REFERENCES "account"(id) ON DELETE CASCADE
+);
+
+
+CREATE TABLE IF NOT EXISTS "interest" (
+  "id" bigserial PRIMARY KEY,
+  "id_account" bigint NOT NULL REFERENCES "account"(id) ON DELETE CASCADE,
+  "effective_interest" integer,
+  "first_interest" integer NOT NULL,
+  "deadline" timestamp
+);
+
+CREATE TABLE IF NOT EXISTS "transactiongroup" (
+  "id" bigserial PRIMARY KEY,
+  "id_account" bigint NOT NULL REFERENCES "account"(id) ON DELETE CASCADE,
+  "updated_at" timestamp DEFAULT now(),
+  "label" varchar(255) NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS "transaction" (
+  "effect_date" date DEFAULT now(),
+  "amount" double precision NOT NULL,
+  "receiver" bigint REFERENCES "account"(id) ON DELETE CASCADE,
+  "created_at" timestamp DEFAULT now(),
+  "label" varchar(255),
+  "type" text,
+  "id" bigserial PRIMARY KEY,
+  "reference" varchar(255) UNIQUE,
+  "id_account" bigint NOT NULL REFERENCES "account"(id) ON DELETE CASCADE,
+  "planed_at" timestamp,
+  "category" bigint REFERENCES "category"(id) ON DELETE CASCADE,
+  "id_group" bigint REFERENCES "transactiongroup"(id) ON DELETE CASCADE,
+  "status" text
+);

src/main/resources/migrations/sqlScript/banking_full_script.sql

@@ -1,24 +1,25 @@
-CREATE OR REPLACE FUNCTION get_income_expense_data(period text DEFAULT 'month')
-RETURNS TABLE(date date, income double precision, expense double precision) AS $$
+CREATE OR REPLACE FUNCTION get_income_expense_data_custom_period(period text DEFAULT 'month')
+RETURNS TABLE(period_start date, income double precision, expense double precision) 
+AS $$
 BEGIN
     IF period = 'month' THEN
         RETURN QUERY
         SELECT
-            date_trunc('month', t.effect_date) AS date,
+            (t.effect_date - (EXTRACT(DAY FROM t.effect_date) - 1) * INTERVAL '1 day') AS period_start,
             SUM(CASE WHEN t.type = 'income' THEN t.amount ELSE 0 END) AS income,
             SUM(CASE WHEN t.type = 'expense' THEN t.amount ELSE 0 END) AS expense
         FROM
             transaction t
         WHERE
-            t.effect_date >= date_trunc('month', current_date) - interval '1 month'
+            t.effect_date >= current_date - interval '1 month'
         GROUP BY
-            date_trunc('month', t.effect_date)
+            (t.effect_date - (EXTRACT(DAY FROM t.effect_date) - 1) * INTERVAL '1 day')
         ORDER BY
-            date_trunc('month', t.effect_date);
+            (t.effect_date - (EXTRACT(DAY FROM t.effect_date) - 1) * INTERVAL '1 day');
     ELSIF period = 'day' THEN
         RETURN QUERY
         SELECT
-            t.effect_date AS date,
+            t.effect_date AS period_start,
             SUM(CASE WHEN t.type = 'income' THEN t.amount ELSE 0 END) AS income,
             SUM(CASE WHEN t.type = 'expense' THEN t.amount ELSE 0 END) AS expense
         FROM
@@ -31,4 +32,5 @@ BEGIN
             t.effect_date;
     END IF;
 END;
-$$ LANGUAGE plpgsql;
+$$ 
+LANGUAGE plpgsql;