creating table from two different table - mysql

Question

I am creating table from two different table with query:
create table post_table as
( select t1.id, t2.url, t2.desc, t2.preview, t2.img_url,
t2.title, t2.hash, t2.rate
from user_record t1, post_data t2
primary key (t1.id, t2,hash))
what's syntax error here?
post_data
----
url varchar(255) No
desc varchar(2048) No
preview varchar(255) No
img_url varchar(128) No
title varchar(128) No
hash varchar(128) No // This is one
rate varchar(20) Yes NULL
user_record
id varchar(40) No //This is 2nd
name varchar(50) Yes NULL
email varchar(50) Yes NULL
picture varchar(50) No
UPDATE:
create table post_table (
id VARCHAR(40), url varchar(255), preview varchar(255) , img_url varchar(128), title varchar(128), hash varchar(128), rate varchar(20)
primary key (t1.id, t2,hash));
select t1.id, t2.url, t2.desc, t2.preview, t2.img_url,
t2.title, t2.hash, t2.rate
from user_record t1, post_data t2;

Answer 1

Formatting the CREATE TABLE statement so we can see the ( ) pairing:
create table post_table as (
select t1.id, t2.url, t2.desc, t2.preview, t2.img_url, t2.title, t2.hash, t2.rate
from user_record t1, post_data t2
primary key (t1.id, t2,hash)
)
We can see that the primary key is being attached to the select statement.
Beyond that there are specific restrictions around general CREATE TABLE syntax can be used in a CREATE TABLE ... SELECT statement.
From: http://dev.mysql.com/doc/refman/5.1/en/create-table-select.html
The ENGINE option is part of the CREATE TABLE statement, and should
not be used following the SELECT; this would result in a syntax error.
The same is true for other CREATE TABLE options such as CHARSET.
You can how ever select keys by using syntax similar to:
mysql> CREATE TABLE test (a INT NOT NULL AUTO_INCREMENT,
-> PRIMARY KEY (a), KEY(b))
-> ENGINE=MyISAM SELECT b,c FROM test2;
So with your query re-work it to define the column types first, then the keys, then the select statement last. We don't know your data types but it would look something similar to:
create table post_table (
id DATATYPE, url DATATYPE, desc DATATYPE...
primary key (t1.id, t2,hash))
)
select t1.id, t2.url, t2.desc, t2.preview, t2.img_url,
t2.title, t2.hash, t2.rate
from user_record t1, post_data t2

Answer 2

You have put key definition BEFORE select.
Also you can't do key definition without fields, so if you need keys, you have put all table structure.
http://dev.mysql.com/doc/refman/5.1/en/create-table.html
Other way is create index after creating table by use CREATE INDEX