Russell Smith 1b0b082a08 MDL-54947 database: Update PostgreSQL binary handling.
PostgreSQL 9.1 allows hex formating for binary which is handled better
by pg_query_params().

Getting bytea isn't required on connection, it can be used as pg_field_type()
when binary needs to be checked.
2016-06-30 12:58:53 +10:00
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