SORRY! alter table fsplhplwc add (CSJL varchar2(30) );
Adding a Table Column: Example The following statement adds a column named duty_pct of datatype NUMBER and a column named visa_needed of datatype VARCHAR2 with a size of 3 (to hold "yes" and "no" data) and a CHECK integrity constraint:ALTER TABLE countries ADD (duty_pct NUMBER(2,2) CHECK (duty_pct < 10.5), visa_needed VARCHAR2(3));
飘 的方法不错: alter table fsplhplwc add (CSJL varchar2(30) );
alter table fsplhplwc add (CSJL varchar2(30) );
The following statement adds a column named duty_pct of datatype NUMBER and a column named visa_needed of datatype VARCHAR2 with a size of 3 (to hold "yes" and "no" data) and a CHECK integrity constraint:ALTER TABLE countries
ADD (duty_pct NUMBER(2,2) CHECK (duty_pct < 10.5),
visa_needed VARCHAR2(3));
alter table fsplhplwc add (CSJL varchar2(30) );