CREATE TABLE temp AS SELECT * FROM distributors;
DELETE distributors;
ALTER TABLE distributors ADD COLUMN address VARCHAR2(30);
ALTER TABLE table DROP [ COLUMN ] column
CREATE TABLE distributors AS SELECT * FROM temp;
DROP TABLE temp;
DELETE distributors;
ALTER TABLE distributors ADD COLUMN address VARCHAR2(30);
ALTER TABLE table DROP [ COLUMN ] column
CREATE TABLE distributors AS SELECT * FROM temp;
DROP TABLE temp;
解决方案 »
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