CREATE TABLE IF NOT EXISTS "sessions" (    "id" VARCHAR NOT NULL PRIMARY KEY,    "expires" TIMESTAMP WITH TIME ZONE NULL,    "session" TEXT NOT NULL); CREATE TABLE IF NOT EXISTS "users" (    "id" SERIAL PRIMARY KEY,    "github_login" VARCHAR,    "admin" BOOLEAN); CREATE UNIQUE INDEX "index_users_github_login" ON "users" ("github_login"); CREATE TABLE IF NOT EXISTS "signups" (    "id" SERIAL PRIMARY KEY,    "github_login" VARCHAR,    "email_address" VARCHAR,    "about" TEXT);