Improved examples

Author: ankane

README.md

@@ -18,7 +18,7 @@ Follow the instructions for your database library:
 Enable the extension
 
 ```lisp
-(query "CREATE EXTENSION IF NOT EXISTS vector")
+(load-extension "vector")
 ```
 
 Create a table
@@ -36,8 +36,6 @@ Insert a vector
 Get the nearest neighbors
 
 ```lisp
-(register-sql-operators :2+-ary :<-> :<#> :<=>)
-
 (doquery (:limit (:order-by (:select 'id 'embedding :from 'items) (:<-> 'embedding "[1,1,1]")) 5) (id embedding)
     (format t "~A: ~A~%" id embedding))
 ```

postmodern.lisp

@@ -3,7 +3,7 @@
 
 (connect-toplevel "pgvector_lisp_test" (uiop:getenv "USER") "" "localhost")
 
-(query "CREATE EXTENSION IF NOT EXISTS vector")
+(load-extension "vector")
 
 (query (:drop-table :if-exists 'items))
 
@@ -12,8 +12,6 @@
 (query (:insert-into 'items :set 'embedding "[1,1,1]"))
 (query (:insert-rows-into 'items :columns 'embedding :values '(("[2,2,2]") ("[1,1,2]"))))
 
-(register-sql-operators :2+-ary :<-> :<#> :<=>)
-
 (doquery (:limit (:order-by (:select 'id 'embedding :from 'items) (:<-> 'embedding "[1,1,1]")) 5) (id embedding)
     (format t "~A: ~A~%" id embedding))