zed/crates/collab/migrations/20230925210437_add_channel_changes.sql

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CREATE TABLE IF NOT EXISTS "observed_buffer_edits" (
"user_id" INTEGER NOT NULL REFERENCES users (id) ON DELETE CASCADE,
"buffer_id" INTEGER NOT NULL REFERENCES buffers (id) ON DELETE CASCADE,
"epoch" INTEGER NOT NULL,
"lamport_timestamp" INTEGER NOT NULL,
"replica_id" INTEGER NOT NULL,
PRIMARY KEY (user_id, buffer_id)
);
CREATE UNIQUE INDEX "index_observed_buffer_user_and_buffer_id" ON "observed_buffer_edits" ("user_id", "buffer_id");
CREATE TABLE IF NOT EXISTS "observed_channel_messages" (
"user_id" INTEGER NOT NULL REFERENCES users (id) ON DELETE CASCADE,
"channel_id" INTEGER NOT NULL REFERENCES channels (id) ON DELETE CASCADE,
"channel_message_id" INTEGER NOT NULL,
PRIMARY KEY (user_id, channel_id)
);
CREATE UNIQUE INDEX "index_observed_channel_messages_user_and_channel_id" ON "observed_channel_messages" ("user_id", "channel_id");