declare begin for c1 in (select table_name,constraint_name from user_constraints) loop begin execute immediate ('alter table '||c1.table_name||' disable constraint '||c1.constraint_name); end; end loop; for t1 in (select table_name from user_tables) loop begin execute immediate ('truncate table '||t1.table_name); end; end loop; for c2 in (select table_name,constraint_name from user_constraints) loop begin execute immediate ('alter table '||c2.table_name||' enable constraint '||c2.constraint_name); end; end loop; end; /
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