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create table users
(
id INTEGER not null
primary key,
name VARCHAR(50) not null
unique,
pwd VARCHAR(255) not null,
description VARCHAR(100)
);
create table categories
(
id INTEGER not null
primary key,
name VARCHAR(50) not null,
parent_id INTEGER
references categories,
user_id INTEGER not null
references users
);
create table const_expenses
(
id INTEGER not null
primary key,
description VARCHAR(50),
expense NUMERIC(10, 2) not null,
months SMALLINT not null,
start DATE not null,
end DATE not null,
prev_id INTEGER
references const_expenses,
user_id INTEGER not null
references users,
category_id INTEGER not null
references categories
);
create index idx_start_end
on const_expenses (user_id, start, end);
create index ix_constexpense_end
on const_expenses (end);
create index ix_constexpense_start
on const_expenses (start);
create table single_expenses
(
id INTEGER not null
primary key,
description VARCHAR(50),
expense NUMERIC(10, 2) not null,
year INTEGER not null,
month SMALLINT not null,
day SMALLINT not null,
user_id INTEGER not null
references users,
category_id INTEGER not null
references categories
);
create index idx_single_date
on single_expenses (user_id, year, month);
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