Postgres JDBC-Treiber: PSQLException: Syntaxfehler bei oder nahe RETURNING

Question

Aus irgendeinem Grund fügt der JDBC PostgresSQL-Treiber hinzu: RETURNING * bis zum Ende der SELECT-Anweisungen. Hat jemand eine Idee warum?

Code:

protected static final String AUTH_QUERY = "SELECT \"SECRET\" FROM \"user\" WHERE \"NAME\" = :name"; 

String password = sql2o.open().createQuery(AUTH_QUERY).addParameter("name", username).executeScalar(String.class); 

Ausnahme:

org.postgresql.util.PSQLException: ERROR: syntax error at or near "RETURNING" 
    Position: 47 
    at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2161) 
    at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1890) 
    at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255) 
    at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:559) 
    at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:417) 
    at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:302) 
    at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:76) 
    at org.sql2o.Query.executeScalar(Query.java:533) 
    at org.sql2o.Query.executeScalar(Query.java:577) 
    at org.sql2o.Query.executeScalar(Query.java:568) 

Datenquelle (JNDI):

<Configure id="wac" class="org.eclipse.jetty.webapp.WebAppContext"> 

    <New id="mydb" class="org.eclipse.jetty.plus.jndi.Resource"> 
     <Arg></Arg> 
     <Arg>jdbc/mydb</Arg> 
     <Arg> 
      <New class="com.mchange.v2.c3p0.ComboPooledDataSource"> 
       <Set name="driverClass">org.postgresql.Driver</Set> 
       <Set name="jdbcUrl">jdbc:postgresql://localhost:5432/mydb</Set> 
       <Set name="user">user</Set> 
       <Set name="password">pass</Set> 
      </New> 
     </Arg> 
    </New> 
</Configure> 

PostgreSQL JDBC-Treiber Version

<dependency> 
    <groupId>org.postgresql</groupId> 
    <artifactId>postgresql</artifactId> 
    <version>9.3-1101-jdbc41</version> 
</dependency> 

Paketerfassung

http://postimg.org/image/gbl2dq4zx/

No.  Time   Source    Destination   Protocol Length Info 
    12 0.175636000 127.0.0.1    127.0.0.1    PGSQL 182 >P/B/D/E/S 

Frame 12: 182 bytes on wire (1456 bits), 182 bytes captured (1456 bits) on interface 0 
PostgreSQL 
    Type: Parse 
    Length: 69 
    Statement: 
    Query: SELECT "SECRET" FROM "user" WHERE "NAME" = $1 RETURNING * 
    Parameters: 1 
     Type OID: 1043 

Answer 1

Das sieht wie ein problem with sql2o. Die Kommentare zu dem Fehlerbericht sagen:

Whe using PostgreSQL, all SELECT statements will fail with message: org.postgresql.util.PSQLException: ERROR: syntax error at or near "RETURNING"

Seems to be related to this issue

This has been fixed with version 1.1.2.

The fix requires the QuirkMode enum flag to be set to PostgreSQL when creating a new instance of sql2o. It changes default behaviour of queries to NOT fetch generated keys by default. When it is needed to fetch generated keys, the returnGeneratedKeys parameter in the generateQuery method should be set.

Seit Sql2o 1.6.0 schließen die sql2o-Postgres-Abhängigkeit und verwenden new PostgresQuirks() statt QuirksMode.

Answer 2

Der einfachste Weg, die ich getan habe dies wurde hinzugefügt "-" am Ende des SQL-Code:

String sql = "INSERT INTO testTable(var1, var2) values ("1","2"), ("1","2") RETURNING id;--"; 

PreparedStatement ps = getConnection().prepareStatement(sql, Statement.RETURN_GENERATED_KEYS); 
ps.executeUpdate(); 
ResultSet rs = ps.getGeneratedKeys();