send
Query {"String": "RESET intervalstyle"}
----

until
ReadyForQuery
----
{"Type":"CommandComplete","CommandTag":"RESET"}
{"Type":"ReadyForQuery","TxStatus":"I"}

send
Query {"String": "SET custom_option.session_setting = 'abc'"}
----

until
ReadyForQuery
----
{"Type":"CommandComplete","CommandTag":"SET"}
{"Type":"ReadyForQuery","TxStatus":"I"}

send
Query {"String": "SHOW custom_option.session_setting"}
----

until
ReadyForQuery
----
{"Type":"RowDescription","Fields":[{"Name":"custom_option.session_setting","TableOID":0,"TableAttributeNumber":0,"DataTypeOID":25,"DataTypeSize":-1,"TypeModifier":-1,"Format":0}]}
{"Type":"DataRow","Values":[{"text":"abc"}]}
{"Type":"CommandComplete","CommandTag":"SHOW"}
{"Type":"ReadyForQuery","TxStatus":"I"}
