tasks/database/create-tables.sql

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-- Sequences
CREATE SEQUENCE items_item_id_seq INCREMENT 1
MINVALUE 1 MAXVALUE 9223372036854775807
START 1 CACHE 1;
GRANT SELECT,UPDATE ON items_item_id_seq TO :webapp_user;
CREATE SEQUENCE users_user_id_seq INCREMENT 1
MINVALUE 1 MAXVALUE 9223372036854775807
START 1 CACHE 1;
GRANT SELECT,UPDATE ON users_user_id_seq TO :webapp_user;
CREATE SEQUENCE tasks_task_id_seq INCREMENT 1
MINVALUE 1 MAXVALUE 9223372036854775807
START 1 CACHE 1;
GRANT SELECT,UPDATE ON tasks_task_id_seq TO :webapp_user;
CREATE SEQUENCE notes_note_id_seq INCREMENT 1
MINVALUE 1 MAXVALUE 9223372036854775807
START 1 CACHE 1;
GRANT SELECT,UPDATE ON notes_note_id_seq TO :webapp_user;
CREATE SEQUENCE task_dependencies_taskdep_id_seq INCREMENT 1
MINVALUE 1 MAXVALUE 9223372036854775807
START 1 CACHE 1;
GRANT SELECT,UPDATE ON task_dependencies_taskdep_id_seq TO :webapp_user;
-- Tables
-- Table items
CREATE TABLE items (
item_id INT NOT NULL DEFAULT NEXTVAL('items_item_id_seq'::TEXT),
item_name VARCHAR(128) NOT NULL,
item_id_parent INT,
item_ordering INT NOT NULL,
PRIMARY KEY(item_id)
);
CREATE UNIQUE INDEX i_items_unicity ON items (item_name,item_id_parent);
CREATE UNIQUE INDEX i_items_ordering ON items (item_ordering);
-- Make sure top-level items are unique
CREATE UNIQUE INDEX i_items_top_unicity
ON items ( item_name )
WHERE item_id_parent IS NULL;
ALTER TABLE items ADD FOREIGN KEY (item_id_parent)
REFERENCES items(item_id) ON UPDATE NO ACTION ON DELETE CASCADE;
GRANT SELECT,INSERT,UPDATE,DELETE ON items TO :webapp_user;
-- Table users
CREATE TABLE users (
user_id INT NOT NULL DEFAULT NEXTVAL('users_user_id_seq'::TEXT),
user_email VARCHAR(256) NOT NULL,
user_salt CHAR(8) NOT NULL,
user_iterations INT NOT NULL,
user_hash CHAR(40) NOT NULL,
PRIMARY KEY(user_id)
);
CREATE UNIQUE INDEX i_users_user_email ON users (LOWER(user_email));
GRANT SELECT,INSERT,UPDATE ON users TO :webapp_user;
-- Table tasks
CREATE TABLE tasks (
task_id INT NOT NULL DEFAULT NEXTVAL('tasks_task_id_seq'::TEXT),
item_id INT NOT NULL REFERENCES items(item_id) ON UPDATE NO ACTION ON DELETE CASCADE,
task_title VARCHAR(256) NOT NULL,
task_priority INT NOT NULL,
task_description TEXT NOT NULL,
task_added TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT now(),
user_id INT NOT NULL REFERENCES users(user_id) ON UPDATE NO ACTION ON DELETE CASCADE,
PRIMARY KEY(task_id)
);
CREATE UNIQUE INDEX i_tasks_item_id_task_title ON tasks (item_id,task_title);
GRANT SELECT,INSERT,UPDATE,DELETE ON tasks TO :webapp_user;
-- Table items_tree
CREATE TABLE items_tree (
item_id_parent INT NOT NULL REFERENCES items(item_id) ON UPDATE NO ACTION ON DELETE CASCADE,
item_id_child INT NOT NULL REFERENCES items(item_id) ON UPDATE NO ACTION ON DELETE CASCADE,
pt_depth INT NOT NULL,
PRIMARY KEY(item_id_parent,item_id_child)
);
GRANT SELECT ON items_tree TO :webapp_user;
-- Table completed_tasks
CREATE TABLE completed_tasks (
task_id INT NOT NULL REFERENCES tasks(task_id) ON UPDATE NO ACTION ON DELETE CASCADE,
completed_task_time TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT now(),
user_id INT NOT NULL REFERENCES users(user_id) ON UPDATE NO ACTION ON DELETE CASCADE,
PRIMARY KEY(task_id)
);
GRANT SELECT,INSERT,UPDATE,DELETE ON completed_tasks TO :webapp_user;
-- Table task_dependencies
CREATE TABLE task_dependencies (
taskdep_id INT NOT NULL DEFAULT NEXTVAL('task_dependencies_taskdep_id_seq'::TEXT),
task_id INT NOT NULL REFERENCES tasks(task_id) ON UPDATE NO ACTION ON DELETE CASCADE,
task_id_depends INT NOT NULL REFERENCES tasks(task_id) ON UPDATE NO ACTION ON DELETE CASCADE,
PRIMARY KEY(taskdep_id)
);
CREATE UNIQUE INDEX i_taskdep_unicity ON task_dependencies (task_id,task_id_depends);
CREATE INDEX i_taskdep_bydependency ON task_dependencies (task_id_depends);
GRANT SELECT,INSERT,DELETE ON task_dependencies TO :webapp_user;
-- Table notes
CREATE TABLE notes (
note_id INT NOT NULL DEFAULT NEXTVAL('notes_note_id_seq'::TEXT),
task_id INT NOT NULL REFERENCES tasks(task_id) ON UPDATE NO ACTION ON DELETE CASCADE,
user_id INT NOT NULL REFERENCES users(user_id) ON UPDATE NO ACTION ON DELETE CASCADE,
note_added TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT now(),
note_text TEXT NOT NULL,
PRIMARY KEY(note_id)
);
GRANT SELECT,INSERT,UPDATE,DELETE ON notes TO :webapp_user;