PostgreSQL 用SQL画一个米老鼠

postgres=# SELECT
postgres-# *
postgres-# FROM
postgres-#     (SELECT
postgres(#             array_to_string(
postgres(#                 array_agg(
postgres(#                     CASE
postgres(#                         WHEN(
postgres(#                             POWER(( xx.x - 25 ) ,2 ) / 130 + POWER(( yy.y - 25 ) ,2 ) / 130
postgres(#                         ) = 1
postgres(#                         THEN '$' WHEN(
postgres(#                             SQRT( POWER( xx.x - 20 ,2 ) + POWER( yy.y - 20 ,2 ) )
postgres(#                         ) < 2
postgres(#                         THEN '#' WHEN(
postgres(#                             SQRT( POWER( xx.x - 20 ,2 ) + POWER( yy.y - 30 ,2 ) )
postgres(#                         ) < 2
postgres(#                         THEN '#' WHEN(
postgres(#                             SQRT( POWER( xx.x - 29 ,2 ) + POWER( yy.y - 25 ,2 ) )
postgres(#                         ) < 4
postgres(#                         THEN '#' WHEN(
postgres(#                             POWER(( xx.x - 10 ) ,2 ) / 40 + POWER(( yy.y - 10 ) ,2 ) / 40
postgres(#                         ) = 1
postgres(#                         THEN '$' WHEN(
postgres(#                             POWER(( xx.x - 10 ) ,2 ) / 40 + POWER(( yy.y - 40 ) ,2 ) / 40 = 1
postgres(#                         )
postgres(#                         THEN '$'
postgres(#                         ELSE ' '
postgres(#                     END
postgres(#                 ) ,
postgres(#                 ' '
postgres(#             ) AS cartoon
postgres(#         FROM
postgres(#             (
postgres(#                 SELECT
postgres(#                     generate_series(
postgres(#                         1 ,
postgres(#                         40
postgres(#                     ) AS x
postgres(#             ) AS xx ,
postgres(#             (
postgres(#                 SELECT
postgres(#                     generate_series(
postgres(#                         1 ,
postgres(#                         50
postgres(#                     ) AS y
postgres(#             ) AS yy
postgres(#         GROUP BY xx.x ORDER BY xx.x
postgres(#     ) AS co_ord;
                                               cartoon
-----------------------------------------------------------------------------------------------------

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                                       # # #               # # #
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                                               # # # # #
                                           # # # # # # #
                             $               # # # # # # #               $
                                             # # # # # # #
                                           # # # # # # #
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                                             $           $                                          

(40 rows)