work on some tables in the same time. - Mailing list pgsql-sql

I want to execute this query on some table2 in the same time :

INSERT INTO table2_n(f1, f2, f3)SELECT DISTINCT f1, f2, f3 FROM table1_n ;

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CREATE TABLE table1_1( INT2 f1, INT2 f2, INT2 f3, INT2 f4 );
CREATE TABLE table1_2( INT2 f1, INT2 f2, INT2 f3, INT2 f4 );
...

CREATE TABLE table2_1( INT2 f1, INT2 f2, INT2 f3 );
CREATE TABLE table2_2( INT2 f1, INT2 f2, INT2 f3 );
...

------------------------------------------------------------------

Anyone can help me ?
Thanks in advance.

Jerome.