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create table users
(
id int auto_increment
primary key,
name varchar(50) not null,
pwd varchar(255) not null,
description varchar(100) null,
constraint name
unique (name)
);
create table categories
(
id int auto_increment
primary key,
name varchar(50) not null,
parent_id int null,
user_id int not null,
constraint categories_ibfk_1
foreign key (parent_id) references categories (id),
constraint categories_ibfk_2
foreign key (user_id) references users (id)
);
create index parent_id
on categories (parent_id);
create index user_id
on categories (user_id);
create table const_expenses
(
id int auto_increment
primary key,
description varchar(50) null,
expense decimal(10, 2) not null,
months tinyint unsigned not null,
start date not null,
end date not null,
prev_id int null,
category_id int not null,
user_id int not null,
constraint const_expenses_ibfk_1
foreign key (prev_id) references const_expenses (id),
constraint const_expenses_ibfk_2
foreign key (category_id) references categories (id),
constraint const_expenses_ibfk_3
foreign key (user_id) references users (id)
);
create index category_id
on const_expenses (category_id);
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 index prev_id
on const_expenses (prev_id);
create table single_expenses
(
id int auto_increment
primary key,
description varchar(50) null,
expense decimal(10, 2) not null,
year year not null,
month tinyint(6) unsigned not null,
day tinyint(6) unsigned not null,
category_id int not null,
user_id int not null,
constraint single_expenses_ibfk_1
foreign key (category_id) references categories (id),
constraint single_expenses_ibfk_2
foreign key (user_id) references users (id)
);
create index category_id
on single_expenses (category_id);
create index idx_single_date
on single_expenses (user_id, year, month);
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