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;

Alter table oracle

ALTER TABLE table_name
ADD CONSTRAINT constraint_name
   FOREIGN KEY (column1, column2, ... column_n)
   REFERENCES parent_table (column1, column2, ... column_n);

Source: techonthenet.com

Oracle alter table

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

Source: oracletutorial.com

Alter table oracle

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

Source: techonthenet.com

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