Add a set of constraints to the collection.
Returns true if any constraints were added by this command

Check if a collection exists currently.
Returns boolean.

Get a count of documents in the collection.

Create a collection if it does not already exist.
Returns boolean indicating whether the collection was created by this command.

Delete a collection if it exists.
Returns boolean indicating whether the collection was deleted by this command.

Get a sequence of unique values at the given dotted-path.
Example: (bq/distinct db "people" "address.city")

Find documents from the collection matching a given query.

Find documents which have _id in the supplied sequence of doc-ids.
Returns a potentially empty sequence of docs.

Find a single document from the collection matching a given query.
Returns a map, or nil if not found.

Find a single document which has a _id equal to the supplied doc-id.
Returns a map, or nil if not found.

Insert a document (map) into the collection

Get a list of collections on the server.
Returns a sequence of strings

Get a list of constraints on this collection.

Build a connection spec, same as a clojure.java.jdbc spec.
This function will add the appropriate PostgreSQL bits to the supplied
spec map.
See http://clojure.github.io/java.jdbc/#clojure.java.jdbc/get-connection.
Example:
  (def spec (bq/make-db-spec {:subname "//localhost/some_db"
                              :user "a_username"
                              :password "a_bad_password"}))

Remove documunts matching the supplied query-doc.

Remove a set of constraints from the collection.
Returns true if any constraints were removed by this command

Remove many documents, by their _id fields

Remove a single document matching the supplied query-doc.

Remove a single document which has a _id value matching the supplied doc-id.

Save a document (map) to the collection, overwriting any existing
doc with the same _id value.

Evaluates body expressions in the context of a single db connection.
Example:
  (bq/with-connection [conn spec]
    (bq/insert conn "things" {:a 1})
    (bq/insert conn "things" {:a 2}))