Implement batch runner for postgresql.

[raol]

In general it's almost copy/paste of MySqlBatchRunner class.
Slight modifications:

• changed queries to postgresql syntax
  UPDATE
  SET
  FROM ( )
• slighly modified regular expression with self updates.
  ColumAlias is optional group now. Alias is not generated every time.
• When in TransactionScope it means we have open transaction, really, it is.
  Postgre treats such transaction as distributed, that's why opening new transaction fails.

[KivraS]

Is there any other Relevant Commit or Fork Concerning Postgre SQL?
I have downloaded this Commit Source , Needed to Change syntax from
(schema.table ) to ("schema"."table") and also ( columnName) to ("columnName") .
But otherwise it worked fine for a batch update i needed. Too bad it didn't got merged into the master branch , since a Postgresql handler is missing.

[raol]

@KivraS, I'm not sure I've got your point. You are saying that the generated query by PgSqlBatch runner is incorrect. Right?
It seems you're using TableNames and ColumnNames instead of tablenames, i.e. your schema is not lowercase. Right?
If so, I will make additional changes to handle such cases.

[KivraS]

"dbo" is the Schema name, "Transport" is the Table name.
For example. Previously the Runner Generated this sql.

select * from dbo.Transport where Id = 450

If you run this code on pg Admin on Postgresql 9.3 you get

ERROR: relation "dbo.transport" does not exist
LINE 1: select * from dbo.Transport where Id = 450

Correct syntax to work is

select * from dbo."Transport" where "Id" = 450

I have managed to use your PsqlBatchRunner by altering some lines.
For example

Line 122
deleteCommand.CommandText = sqlBuilder.ToString().Replace("[","").Replace("]", "");
To
deleteCommand.CommandText = sqlBuilder.ToString().Replace("[","\"").Replace("]", "\"");

And similarly for column names and Update queries.

[raol]

@KivraS Okay. Clear. Will fix my code. Thanks.