修改,添加,删除表名和表列名
--测试表create table TEST(ID NUMBER not null,NAME VARCHAR2(20))ALTERTABLESCOTT.TESTRENAMETOTEST1--修改表名ALTERTABLESCOTT.TESTRENAMECOLUMNNAMETONAME1 --修改表列名ALTERTABLESCOTT.TESTMODIFYNAME1NUMBER(20) --修改字段类型ALTERTABLESCOTT.TESTADDADDRESSVARCHAR2(40) --添加表列ALTERTABLESCOTT.TESTDROPNAMECASCADECONSTRAINTS --删除表列alter table aa add constraint pk_aa_id primary key(id) --添加主键ALTER TABLE gtsysusr.SCHEDULE_CONTENTS MODIFY CONTENTS_ID NVARCHAR2(64)--另建一个表，把varchar改成date，然后用SQL转一下插入，然后删除原表，然后改目标表名字。应该可以了。--四，--pa_t_engineering 表名--ENGINEERING_INVE 要修改的列--TEMP_ROWNAME 临时列名,用于存储数据(因为oracle修改时会弹出不能修改非空列)ALTER TABLE pa_t_engineering RENAME COLUMN ENGINEERING_INVE TO TEMP_ROWNAME;ALTER TABLE pa_t_engineering ADD ENGINEERING_INVE NUMBER(18,2);UPDATE pa_t_engineering SET ENGINEERING_INVE = CAST(TEMP_ROWNAME AS NUMBER(18,2));ALTER TABLE pa_t_engineering DROP COLUMN TEMP_ROWNAME;
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