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这是难题？(1)create table S(SNO VARCHAR(20) PRIMARY KEY,SNAME NVARCHAR(50) NOT NULL,STATUS INT DEFAULT(0),SCITY NVARCHAR(20))CREATE TABLE P(PNO VARCHAR(20) PRIMARY KEY,PNAME NVARCHAR(50) NOT NULL,COLOR NVARCHAR(10),WEIGHT NUMERIC(9,2))CREATE TABLE J(JNO VARCHAR(20) PRIMARY KEY, ... |
