Answers for "oracle alter table"

alter table oracle

ALTER TABLE tablename MODIFY columnname varchar2(100)

add column table pl sql

ALTER TABLE table_name
  ADD column_name column_definition;

update table syntax in oracle

{
    UPDATE table-Name [[AS] correlation-Name]
        SET column-Name = Value
        [ , column-Name = Value} ]*
        [WHERE clause] |
    UPDATE table-Name
        SET column-Name = Value
        [ , column-Name = Value ]*
        WHERE CURRENT OF
}

oracle alter table

ALTER TABLE table_name 
ADD column_name data_type constraint;
Code language: SQL (Structured Query Language) (sql)

alter table oracle

ALTER TABLE products
ADD CONSTRAINT fk_supplier
  FOREIGN KEY (supplier_id)
  REFERENCES supplier(supplier_id);