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ALTER TABLE ±íÃû ADD(ÁÐÃû Êý¾ÝÀàÐÍ);
È磺
ALTER TABLE emp ADD(weight NUMBER(38,0));
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ALTER TABLE ±íÃû MODIFY(ÁÐÃû Êý¾ÝÀàÐÍ);
È磺
ALTER TABLE emp MODIFY(weight NUMBER(3,0) NOT NULL);
Demo:
ALTER TABLE PY_CCORDER ADD(
CCORD_REFUNDEDTIMES INTEGER,
CCORD_REFUNDEDAMOUNT NUMBER(15,2)
);
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ALTER TABLE ±íÃû RENAME COLUMN µ±Ç°ÁÐÃû TO ÐÂÁÐÃû;
È磺
ALTER TABLE emp RENAME COLUMN weight TO weight_new;
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ALTER TABLE ±íÃû DROP COLUMN ÁÐÃû;
È磺
ALTER TABLE emp DROP COLUMN weight_new;
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ALTER TABLE µ±Ç°±íÃû RENAME TO бíÃû;
È磺
ALTER TABLE bouns RENAME TO bonus_new
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