#! /bin/bash

query_file() {
  psql -v ON_ERROR_STOP=1 --single-transaction --quiet "$1" --file="$2" 1>&2
}

query() {
  psql -v ON_ERROR_STOP=1 --single-transaction --quiet "$1" --command="$2" 1>&2
}

schema_changed() {
  base="$1"
  head="$2"
  if [[ -z "$head" ]]; then
    base="$1~"
    head="$1"
  fi

  schema_changed=$(git diff --quiet "$base" "$head" -- ./schema)
  schema_changed_exit=$?

  if [[ "$schema_changed_exit" = "1" ]]; then
    exit 0
  else
    exit 1
  fi
}