Initial schema.
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schema/0000-init.sql
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schema/0000-init.sql
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--
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-- 0000-init.sql
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--
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-- Initial SQL schema construction as of 2025-04-20 (or so)
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--
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-- ISC License
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--
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-- Copyright 2023-2025 Brmlab, z.s.
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-- Dominik Pantůček <dominik.pantucek@trustica.cz>
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--
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-- Permission to use, copy, modify, and/or distribute this software
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-- for any purpose with or without fee is hereby granted, provided
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-- that the above copyright notice and this permission notice appear
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-- in all copies.
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--
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-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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-- WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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-- WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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-- AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
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-- CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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-- OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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-- NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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--
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-- To require fully-qualified names
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SELECT pg_catalog.set_config('search_path', '', false);
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-- Privileged schema with protected data
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CREATE SCHEMA IF NOT EXISTS brmbar_privileged;
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-- Initial versioning
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CREATE TABLE IF NOT EXISTS brmbar_privileged.brmbar_schema(
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ver INTEGER NOT NULL
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);
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-- ----------------------------------------------------------------
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-- Legacy Schema Initialization
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-- ----------------------------------------------------------------
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DO $$
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DECLARE v INTEGER;
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BEGIN
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SELECT ver FROM brmbar_privileged.brmbar_schema INTO v;
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IF v IS NULL THEN
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-- --------------------------------
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-- Legacy Types
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SELECT COUNT(*) INTO v
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FROM pg_catalog.pg_type typ
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INNER JOIN pg_catalog.pg_namespace nsp
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ON nsp.oid = typ.typnamespace
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WHERE nsp.nspname = 'public'
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AND typ.typname='exchange_rate_direction';
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IF v=0 THEN
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RAISE NOTICE 'Creating type exchange_rate_direction';
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CREATE TYPE public.exchange_rate_direction
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AS ENUM ('source_to_target', 'target_to_source');
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ELSE
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RAISE NOTICE 'Type exchange_rate_direction already exists';
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END IF;
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SELECT COUNT(*) INTO v
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FROM pg_catalog.pg_type typ
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INNER JOIN pg_catalog.pg_namespace nsp
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ON nsp.oid = typ.typnamespace
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WHERE nsp.nspname = 'public'
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AND typ.typname='account_type';
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IF v=0 THEN
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RAISE NOTICE 'Creating type account_type';
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CREATE TYPE public.account_type
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AS ENUM ('cash', 'debt', 'inventory', 'income', 'expense',
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'starting_balance', 'ending_balance');
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ELSE
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RAISE NOTICE 'Type account_type already exists';
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END IF;
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SELECT COUNT(*) INTO v
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FROM pg_catalog.pg_type typ
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INNER JOIN pg_catalog.pg_namespace nsp
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ON nsp.oid = typ.typnamespace
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WHERE nsp.nspname = 'public'
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AND typ.typname='transaction_split_side';
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IF v=0 THEN
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RAISE NOTICE 'Creating type transaction_split_side';
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CREATE TYPE public.transaction_split_side
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AS ENUM ('credit', 'debit');
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ELSE
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RAISE NOTICE 'Type transaction_split_side already exists';
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END IF;
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-- --------------------------------
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-- Currencies sequence, table and potential initial data
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CREATE SEQUENCE IF NOT EXISTS public.currencies_id_seq
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START WITH 2 INCREMENT BY 1;
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CREATE TABLE IF NOT EXISTS public.currencies (
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id INTEGER PRIMARY KEY NOT NULL DEFAULT NEXTVAL('public.currencies_id_seq'::regclass),
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name VARCHAR(128) NOT NULL,
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UNIQUE(name)
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);
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INSERT INTO public.currencies (id, name) VALUES (1, 'Kč')
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ON CONFLICT DO NOTHING;
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-- --------------------------------
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-- Exchange rates table - no initial data required
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CREATE TABLE IF NOT EXISTS public.exchange_rates (
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valid_since TIMESTAMP WITHOUT TIME ZONE DEFAULT NOW() NOT NULL,
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target INTEGER NOT NULL,
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FOREIGN KEY (target) REFERENCES public.currencies (id),
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source INTEGER NOT NULL,
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FOREIGN KEY (source) REFERENCES public.currencies (id),
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rate DECIMAL(12,2) NOT NULL,
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rate_dir public.exchange_rate_direction NOT NULL
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);
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-- --------------------------------
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-- Accounts sequence and table and 4 initial accounts
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CREATE SEQUENCE IF NOT EXISTS public.accounts_id_seq
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START WITH 2 INCREMENT BY 1;
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CREATE TABLE IF NOT EXISTS public.accounts (
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id INTEGER PRIMARY KEY NOT NULL DEFAULT NEXTVAL('public.accounts_id_seq'::regclass),
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name VARCHAR(128) NOT NULL,
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UNIQUE (name),
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currency INTEGER NOT NULL,
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FOREIGN KEY (currency) REFERENCES public.currencies (id),
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acctype public.account_type NOT NULL,
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active BOOLEAN NOT NULL DEFAULT TRUE
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);
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INSERT INTO public.accounts (id, name, currency, acctype)
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VALUES (1, 'BrmBar Cash', (SELECT id FROM public.currencies WHERE name='Kč'), 'cash')
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ON CONFLICT DO NOTHING;
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INSERT INTO public.accounts (name, currency, acctype)
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VALUES ('BrmBar Profits', (SELECT id FROM public.currencies WHERE name='Kč'), 'income')
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ON CONFLICT DO NOTHING;
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INSERT INTO public.accounts (name, currency, acctype)
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VALUES ('BrmBar Excess', (SELECT id FROM public.currencies WHERE name='Kč'), 'income')
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ON CONFLICT DO NOTHING;
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INSERT INTO public.accounts (name, currency, acctype)
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VALUES ('BrmBar Deficit', (SELECT id FROM public.currencies WHERE name='Kč'), 'expense')
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ON CONFLICT DO NOTHING;
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-- --------------------------------
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-- Barcodes
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CREATE TABLE IF NOT EXISTS public.barcodes (
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barcode VARCHAR(128) PRIMARY KEY NOT NULL,
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account INTEGER NOT NULL,
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FOREIGN KEY (account) REFERENCES public.accounts (id)
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);
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INSERT INTO public.barcodes (barcode, account)
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VALUES ('_cash_', (SELECT id FROM public.accounts WHERE acctype = 'cash'))
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ON CONFLICT DO NOTHING;
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-- --------------------------------
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-- Transactions
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CREATE SEQUENCE IF NOT EXISTS public.transactions_id_seq
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START WITH 1 INCREMENT BY 1;
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CREATE TABLE IF NOT EXISTS public.transactions (
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id INTEGER PRIMARY KEY NOT NULL DEFAULT NEXTVAL('public.transactions_id_seq'::regclass),
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time TIMESTAMP DEFAULT NOW() NOT NULL,
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responsible INTEGER,
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FOREIGN KEY (responsible) REFERENCES public.accounts (id),
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description TEXT
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);
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-- --------------------------------
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-- Transaction splits
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CREATE SEQUENCE public.transaction_splits_id_seq
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START WITH 1 INCREMENT BY 1;
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CREATE TABLE public.transaction_splits (
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id INTEGER PRIMARY KEY NOT NULL DEFAULT NEXTVAL('public.transaction_splits_id_seq'::regclass),
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transaction INTEGER NOT NULL,
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FOREIGN KEY (transaction) REFERENCES public.transactions (id),
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side public.transaction_split_side NOT NULL,
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account INTEGER NOT NULL,
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FOREIGN KEY (account) REFERENCES public.accounts (id),
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amount DECIMAL(12,2) NOT NULL,
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memo TEXT
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);
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-- --------------------------------
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-- Account balances view
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CREATE OR REPLACE VIEW public.account_balances AS
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SELECT ts.account AS id,
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accounts.name,
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accounts.acctype,
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- sum(
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CASE
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WHEN ts.side = 'credit'::public.transaction_split_side THEN - ts.amount
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ELSE ts.amount
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END) AS crbalance
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FROM public.transaction_splits ts
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LEFT JOIN public.accounts ON accounts.id = ts.account
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GROUP BY ts.account, accounts.name, accounts.acctype
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ORDER BY (- sum(
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CASE
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WHEN ts.side = 'credit'::public.transaction_split_side THEN - ts.amount
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ELSE ts.amount
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END));
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-- --------------------------------
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-- Transaction nice splits view
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CREATE OR REPLACE VIEW public.transaction_nicesplits AS
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SELECT ts.id,
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ts.transaction,
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ts.account,
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CASE
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WHEN ts.side = 'credit'::public.transaction_split_side THEN - ts.amount
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ELSE ts.amount
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END AS amount,
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a.currency,
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ts.memo
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FROM public.transaction_splits ts
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LEFT JOIN public.accounts a ON a.id = ts.account
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ORDER BY ts.id;
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-- --------------------------------
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-- Transaction cash sums view
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CREATE OR REPLACE VIEW public.transaction_cashsums AS
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SELECT t.id,
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t."time",
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sum(credit.credit_cash) AS cash_credit,
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sum(debit.debit_cash) AS cash_debit,
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a.name AS responsible,
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t.description
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FROM public.transactions t
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LEFT JOIN ( SELECT cts.amount AS credit_cash,
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cts.transaction AS cts_t
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FROM public.transaction_nicesplits cts
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LEFT JOIN public.accounts a_1 ON a_1.id = cts.account OR a_1.id = cts.account
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WHERE a_1.currency = (( SELECT accounts.currency
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FROM public.accounts
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WHERE accounts.name::text = 'BrmBar Cash'::text))
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AND (a_1.acctype = ANY (ARRAY['cash'::public.account_type, 'debt'::public.account_type]))
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AND cts.amount < 0::numeric) credit ON credit.cts_t = t.id
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LEFT JOIN ( SELECT dts.amount AS debit_cash,
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dts.transaction AS dts_t
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FROM public.transaction_nicesplits dts
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LEFT JOIN public.accounts a_1 ON a_1.id = dts.account OR a_1.id = dts.account
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WHERE a_1.currency = (( SELECT accounts.currency
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FROM public.accounts
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WHERE accounts.name::text = 'BrmBar Cash'::text))
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AND (a_1.acctype = ANY (ARRAY['cash'::public.account_type, 'debt'::public.account_type]))
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AND dts.amount > 0::numeric) debit ON debit.dts_t = t.id
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LEFT JOIN public.accounts a ON a.id = t.responsible
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GROUP BY t.id, a.name
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ORDER BY t.id DESC;
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-- Initialize version 1
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-- INSERT INTO brmbar_privileged.brmbar_schema(ver) VALUES(1);
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END IF;
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END;
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$$;
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