Escaping table names

[maciekjaros]

I would like to synchronize tables with reserved keyword as names - for example "order", "user". Escaping it in config file by '`' didn't work. I don't know nothing about creating and synchronizing it in pgSQL cause I didn't pass init_replica. I would appreciate your help, as I would like to use this solution in the near future in a fairly large e-commerce system production.

[the4thdoctor]

hi, can you provide me a table create statement I can test?
Thanks

[maciekjaros]

Sure, there is example:

CREATE TABLE `order` (
	`order_id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
	`order_state` TINYINT(3) UNSIGNED NOT NULL DEFAULT '0',
	`order_created` DATETIME DEFAULT NULL,
	`order_modified` DATETIME DEFAULT NULL,
	`order_deadline` DATETIME DEFAULT NULL,
	`order_closed` DATETIME DEFAULT NULL,
	`order_confirmed` DATETIME DEFAULT NULL,
	`order_trashed` DATETIME DEFAULT NULL,
	PRIMARY KEY (`order_id`)
)
COLLATE='utf8_general_ci'
ENGINE=InnoDB;

Keywords in MySQL should be escaped by `... but in pgSQL by double quote :) I cannot achieve it by config file. It is not bad idea to always escape table and column names. In pgSQL it also results in case sensitivity - I suspect you are doing this because the column names are written with a distinction between uppercase and lowercase. Perhaps you only need to escape names of columns and tables in MySQL to solve this.

[the4thdoctor]

the fix will appear in the version 1.8.1 (probably released this sunday).
Thanks for reporting the issue.
If you can check the problem is solved I'd close the ticket.
Thanks

[the4thdoctor]

the version 2.0 is not affected by the bug

[maciekjaros]

There is another place where you have to do it.

Oct 25 07:22:22: [DEBUG] - mysql_lib.py (728): Executing query for table order
Oct 25 07:22:22: [ERROR] - mysql_lib.py (731): error when pulling data from order. sql executed: SELECT (...) as data FROM order;

Table name is not escaped :)

pg_chameleon/pg_chameleon/lib/mysql_lib.py at line 723
sql_out="SELECT "+columns_csv+" as data FROM `"+table_name+"`;"

After fixing that init_replica doesn't copy data:

Oct 25 08:12:13: [INFO] - mysql_lib.py (754): table order error in PostgreSQL copy, saving slice number for the fallback to insert statements
Oct 25 08:12:13: [INFO] - mysql_lib.py (607): Table "order" copied 50 %
Oct 25 08:12:23: [INFO] - mysql_lib.py (754): table order error in PostgreSQL copy, saving slice number for the fallback to insert statements
Oct 25 08:12:23: [INFO] - mysql_lib.py (607): Table "order" copied 100 %
Oct 25 08:12:23: [INFO] - mysql_lib.py (769): the table order does not exist

[the4thdoctor]

let me have a look ;)

[the4thdoctor]

I've added an test record and the data is copied correctly on postgres

[maciekjaros]

It works. Thank you. I have not tried replication yet.

[the4thdoctor]

The table names are escaped when replayed so probably it should work fine. I'm waiting for your feedback before closing the issue though.
thank you

[the4thdoctor]

Any update on this issue? If the replica works I'd close the ticket. Thanks