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Try downgrading PostgresSQL server to 9.5 or update your PostgresSQL driver to 9.4-1211 with the following command: 9.4.1211

You have a different solution? A short tip here would help you and many other users who saw this issue last week.

  • GitHub comment 1138#271858213
    via GitHub by alextakitani
  • GitHub comment 501#223305017
    via GitHub by Jeetah
  • GitHub comment 598#230475073
    via GitHub by dosimeta
  • GitHub comment 7865#233204148
    via GitHub by samlotti2
  • Java/Postgres: Deadlock with Flyway clean
    via Stack Overflow by crusy
  • GitHub comment 48#269015368
    via GitHub by kopax
    • org.jkiss.dbeaver.model.exec.DBCException: Error executing row count at org.jkiss.dbeaver.ui.editors.sql.SQLEditor$QueryResultsContainer.countData( at at at at at at Caused by: org.jkiss.dbeaver.model.exec.DBCException: SQL Error [42803]: ERROR: column "orders.created_at" must appear in the GROUP BY clause or be used in an aggregate function Position: 124 at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCPreparedStatementImpl.executeStatement( at org.jkiss.dbeaver.ui.editors.sql.SQLEditor$QueryResultsContainer.countData( ... 6 more Caused by: org.postgresql.util.PSQLException: ERROR: column "orders.created_at" must appear in the GROUP BY clause or be used in an aggregate function Position: 124 at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse( at org.postgresql.core.v3.QueryExecutorImpl.processResults( at org.postgresql.core.v3.QueryExecutorImpl.execute( at org.postgresql.jdbc.PgStatement.execute( at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags( at org.postgresql.jdbc.PgPreparedStatement.execute( at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCPreparedStatementImpl.execute( at org.jkiss.dbeaver.model.impl.jdbc.exec.JDBCPreparedStatementImpl.executeStatement( ... 7 more

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