Re: Opening view that uses a function - empty column

Thanks for your replies.

David J. - Yes, the same User/PW is used to access, and no, there aren't any other functions in other schemas.

I wrote some simple java code to test the issue (below). The connection works and the table rows are returned, but the external_id column (filled by the function) is not populated.

public class testconn {
public static void main(String[] argv) {

try {
Class.forName("org.postgresql.Driver");
} catch (ClassNotFoundException e) {
e.printStackTrace();
return;
}
Connection connection = null;
try {
String url = "jdbc:postgresql://localhost:5432/postgres";
Properties props = new Properties();
props.setProperty("user","postgres");
props.setProperty("password","postgres");
connection = DriverManager.getConnection(url, props);
} catch (SQLException e) {
e.printStackTrace();
return;
}
try {
Statement st = connection.createStatement();
ResultSet rs = st.executeQuery("SELECT external_id FROM rhs.encounter");
while (rs.next()) {
System.out.println(rs.getString(1));
}
rs.close();
st.close();
} catch (SQLException e) {
e.printStackTrace();
}

}

}

Thanks,
Brady

On Friday, July 27, 2012 1:46:20 PM UTC-6, Brady Mathis wrote:
> Two step inquiry:
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> 1) I have created a function that will parse a value out of XML stored in the pg_largeobject table using xpath, like so:
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> CREATE OR REPLACE FUNCTION extract_from_extended(text, bigint)
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> RETURNS text AS
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> $BODY$
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> select translate( xpath(...) );
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> $BODY$
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> LANGUAGE sql VOLATILE
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> COST 100;
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> 2) I then created a view that calls this function as part of the query, like so:
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> CREATE OR REPLACE VIEW encounter AS
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> SELECT md.account_id, extract_from_extended('externalEncounterID'::text, md.id) AS external_id...
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> FROM app.menu_data md, app.menu_structure ms
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> WHERE...;
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> When I open this view via JDBC, there is no data in the column that is filled by the function call.
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> Any thoughts?
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> TIA,
>
> BRady