----查看表约束
表格： user_constraints
查询外键约束条件
select ' select count(*) from '||TABLE_NAME||';'
from user_constraints a
where
a.constraint_type = 'R'
and a.r_constraint_name='PK_JG0101';
----禁用相关外键约束
select 'ALTER TABLE '||TABLE_NAME||' DISABLE CONSTRAINT '||constraint_name||';'
From user_constraints A
where a.constraint_type = 'R'
and a.r_constraint_name='PK_XX0301'
and Status='ENABLED';
ALTER TABLE JS0101SQ DISABLE CONSTRAINT FK_JS0101SQ_XX0301;
----启用相关外键约束
ALTER TABLE JS0101SQ ENABLE CONSTRAINT FK_JS0101SQ_XX0301;
---查看数据库中的表名
表：user_tables
select 'Drop table '|| TABLE_NAME||';'
from user_tables where TABLE_NAME like 'TEMP1%';