oracle sql记录

oracle 修改varchar字段为clob

select FD_EXPLAIN FROM CMCC_AUDIT_FEE WHERE fd_id = '17c2f95019928e6a27bfff04410bc2bd'

ALTER TABLE CMCC_AUDIT_FEE_bak RENAME COLUMN FD_EXPLAIN TO FD_EXPLAIN_bak;

ALTER TABLE CMCC_AUDIT_FEE_bak ADD FD_EXPLAIN clob;

UPDATE CMCC_AUDIT_FEE_bak SET FD_EXPLAIN = FD_EXPLAIN_bak;

CREATE TABLE CMCC_AUDIT_FEE_bak AS SELECT * FROM CMCC_AUDIT_FEE

ALTER TABLE CMCC_AUDIT_FEE RENAME COLUMN FD_EXPLAIN TO FD_EXPLAIN_bak;

ALTER TABLE CMCC_AUDIT_FEE ADD FD_EXPLAIN clob;

UPDATE CMCC_AUDIT_FEE SET FD_EXPLAIN = FD_EXPLAIN_bak;

 begin函数批量更新数据库数据

BEGIN
    FOR aa IN (
        SELECT
            dept.fd_id as deptid,M.fd_id as fdid
        FROM
            km_imissive_send_main_bbak M
        LEFT JOIN sys_org_element person ON M.doc_create_i