title: PostgreSQL get matches from two tables and save to disk
body: <p>Sorry for noob question, yes, i've google Joins in sql, but i don't understand syntax error. So please help me.</p>
  
  <p>I have 2 tables <em>eng_data_table</em> with <em>key</em> column 
  and <em>get</em> with <em>get</em> column</p>
  
  <p>I just want to get matches from get founded in eng_data_table.keyword and save it to disk. So this is</p>
  
  <pre><code>COPY ( SELECT * FROM "eng_data_table.key" INNER JOIN "get.get" ) TO 'founded.txt';
  </code></pre>
  
  <p>Right? No, i have a syntax error</p>
  
  <pre><code>ERROR:  syntax error at or near ")"
                                  ^
  </code></pre>
  
  <p>Why he don't like it?</p>