[GENERAL] column "waiting" does not exist

2017-03-02 10:20:25 SAST [5196-1] [unknown] postgres postgres@template1 ERROR:  column "waiting" does not exist at character 217
2017-03-02 10:20:25 SAST [5196-2] [unknown] postgres postgres@template1 STATEMENT:  SELECT tmp.mstate AS state,COALESCE(count,0) FROM
                         (VALUES ('active'),('waiting'),('idle'),('idletransaction'),('unknown')) AS tmp(mstate)
                        LEFT JOIN
                         (SELECT CASE WHEN waiting THEN 'waiting' WHEN state='idle' THEN 'idle' WHEN state LIKE 'idle in transaction%' THEN 'idle$
                         count(*) AS count
                         FROM pg_stat_activity WHERE pid != pg_backend_pid()  AND datname='data_portal'
                         GROUP BY CASE WHEN waiting THEN 'waiting' WHEN state='idle' THEN 'idle' WHEN state LIKE 'idle in transaction%' THEN 'idl$
                         ) AS tmp2
                        ON tmp.mstate=tmp2.mstate
                        ORDER BY 1;

I do not know whether it is related but we recently get warnings about bloat in our system tables from the monitoring program.

How do I fix the cause of this error message?

Regards

Johann

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