열 추가

코드 예제

7
0

열 sql 추가

ALTER TABLE table_name
ADD column_name datatype;

--example
ALTER TABLE Customers
ADD Email varchar(255);
6
0

열 sql server 만들기

ALTER TABLE table_name
ADD column_name datatype;
1
0

테이블 sql 에 여러 열 추가

ALTER TABLE table_name
  ADD column_1 column_definition,
      column_2 column_definition,
      ...
      column_n column_definition;
0
0

테이블에 새 열 추가

ALTER TABLE table ADD [COLUMN] column_name;
0
0

기존 테이블의 sql 변경 열

'This adds 'NOT NULL' to excisting column counting in the table mytable'
ALTER TABLE mytable ALTER COLUMN counting INT NOT NULL;

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