ALL operator, UNION, EXCEPT, Renamed Columns and Empty Array problem, CREATE SCHEMA, CREATE CAST for deparsing

[emin100]

Added ALL operator for deparse and unit tests.

SELECT id FROM kodsis WHERE id > ALL(SELECT id FROM kodsis_sub);
OR
SELECT id FROM kodsis WHERE id > ALL(ARRAY[1,2,3,4,5]);

in addition to:
Solution for #132

UNION or UNION ALL deparse problem.(use with ORDER,WITH like)

SELECT 1 UNION select 2 ORDER BY 1 DESC;
OR
WITH kodsis AS (SELECT * FROM application), kodsis2 AS (SELECT * FROM application) SELECT * FROM kodsis UNION SELECT * FROM kodsis ORDER BY id DESC;

in addition to:
Solution for #129

EXCEPT deparse problem.

SELECT "a" FROM "kodsis" EXCEPT SELECT "a" FROM "application"

in addition to:
Solution for #125

Problem when deparsing query with renamend Columns

SELECT "Test"."id" as "new Test Id" from "student" "Test"

in addition to:
Solution for #128

Problem when deparsing empty array query

select array[]::text[] from x

in addition to:
Solution for #124

Deparse CREATE SCHEMA

CREATE SCHEMA myschema;
OR
CREATE SCHEMA AUTHORIZATION joe;
OR
CREATE SCHEMA IF NOT EXISTS test AUTHORIZATION joe;
OR
CREATE SCHEMA hollywood
CREATE TABLE films (title text, release date, awards text[])
CREATE VIEW winners AS
SELECT title, release FROM films WHERE awards IS NOT NULL;

in addition to:
Solution for #122

Deparse CREATE CAST

CREATE CAST (bigint AS int4) WITH FUNCTION int4(bigint) AS ASSIGNMENT;

CREATE CAST (bigint AS int4) WITHOUT FUNCTION AS IMPLICIT;

CREATE CAST (bigint AS int4) WITH INOUT AS ASSIGNMENT;

[lfittl]

@emin100 Thanks for your contribution!

I've applied this with a few modifications, and credited your work in the commit message. Thanks again!