protocol/migrations/sqlite/1603888149_create_chat_identity_last_published_table.up.sql
CREATE TABLE IF NOT EXISTS chat_identity_last_published (
chat_id VARCHAR NOT NULL PRIMARY KEY ON CONFLICT REPLACE,
clock_value INT NOT NULL,
hash BLOB NOT NULL
);
CREATE TABLE IF NOT EXISTS chat_identity_contacts (
contact_id VARCHAR NOT NULL,
image_type VARCHAR NOT NULL,
clock_value INT NOT NULL,
payload BLOB NOT NULL,
UNIQUE(contact_id, image_type) ON CONFLICT REPLACE
);