Oracle修改表名、主键、索引、外键删除重建

1.批量生成表名修改语句

SELECT 'ALTER TABLE ' || TABLE_NAME || ' RENAME TO ' || TABLE_NAME ||
'_BAK_0919'   FROM USER_TABLES T  WHERE T.TABLE_NAME LIKE 'PRO%';

2.批量生成主键名修改语句

SELECT 'ALTER TABLE ' || TABLE_NAME ||' '|| 'RENAME  constraint ' ||
CONSTRAINT_NAME || ' TO PK_'|| TABLE_NAME||';' FROM USER_CONSTRAINTS
WHERE TABLE_NAME LIKE 'PRO%' AND CONSTRAINT_TYPE = 'P';

3.批量生成索引重命名语句

SELECT 'alter index ' || I.INDEX_NAME || ' rename to ' ||
SUBSTR(I.INDEX_NAME,
0,
DECODE(SIGN(25 - LENGTH(I.INDEX_NAME)),
'-1',
25,
LENGTH(I.INDEX_NAME))) || 'temp;',
I.TABLE_NAME,
I.TABLESPACE_NAME
FROM USER_INDEXES I
WHERE I.TABLE_NAME LIKE 'PRO%'
AND I.INDEX_TYPE = 'NORMAL';-- 条件根据自己需要调整

4.批量生成外键删除语句

SELECT 'ALTER TABLE ' || TABLE_NAME ||' '||
'DROP CONSTRAINT ' || CONSTRAINT_NAME || ' ;'
FROM USER_CONSTRAINTS
WHERE  CONSTRAINT_TYPE = 'R'
AND TABLE_NAME LIKE 'PRO%' ;

5.批量生成外键重建语句

-- 注意：这个sql是有问题的，源表存在联合外键时需手工调整合并sql，有兴趣的可以重新写一个拼装SQL
SELECT 'ALTER TABLE ' || child.TABLE_NAME||' ' ||
'ADD CONSTRAINT ' || child.CONSTRAINT_NAME ||' '||
'FOREIGN KEY ' || '('|| cp.COLUMN_NAME || ')' ||
' '|| 'REFERENCES ' || parent.TABLE_NAME ||' '||
'('|| pc.COLUMN_NAME || ') '|| child.DELETE_RULE || ' ;'
FROM USER_CONSTRAINTS child,
USER_CONSTRAINTS parent,
USER_CONS_COLUMNS cp,
USER_CONS_COLUMNS pc
WHERE child.CONSTRAINT_TYPE = 'R' AND
child.R_OWNER = PARENT.OWNER AND
child.R_CONSTRAINT_NAME = PARENT.CONSTRAINT_NAME AND
child.CONSTRAINT_NAME = cp.CONSTRAINT_NAME AND
parent.CONSTRAINT_NAME = pc.CONSTRAINT_NAME AND
cp.POSITION = pc.POSITION AND
child.TABLE_NAME LIKE 'PRO%'
ORDER BY child.OWNER,
child.TABLE_NAME,
child.CONSTRAINT_NAME,
cp.POSITION;