zjh@mydb_for_ora=# insert into big_table select id,uuid() from generate_series(1,1000) id;
INSERT 0 1000
zjh@mydb_for_ora=# select pg_switch_wal();
pg_switch_wal
---------------
0/40022D20
(1 row)
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zjh@mydb_for_ora=# insert into big_table select id,uuid() from generate_series(1,1000) id;
INSERT 0 1000
zjh@mydb_for_ora=# select pg_switch_wal();
pg_switch_wal
---------------
0/40022D20
(1 row)
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