title: How to check the existences of all my tables? in postgresql
body: <p>I want to check the existence of all my tables. Send 1 if all the tables do exist or 0 if one table or more is missing.</p>
  
  <pre><code>select 1 from information_schema.tables tbl where tbl.table_name='graphe';
  select 1 from information_schema.tables tbl where tbl.table_name='proprieteindicateur';
  select 1 from information_schema.tables tbl where tbl.table_name='graphe_proprieteindicateur';
  select 1 from information_schema.tables tbl where tbl.table_name='utilisateurs';
  select 1 from information_schema.tables tbl where tbl.table_name='profil';
  select 1 from information_schema.tables tbl where tbl.table_name='droit'; 
  </code></pre>