Alter table oracle

ALTER TABLE tablename MODIFY columnname varchar2(100)

PL SQL MODIFY COLUMN NME

ALTER TABLE table_name
  RENAME COLUMN old_name TO new_name;

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

Alter table oracle

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

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

Similar codes

22 votes293 views4 answers
Mysql date format
SQL
0 vote336 views1 answer
Copy from one table to another postgres using matching column
SQL
3 votes299 views2 answers
Oracle drop column
SQL
-1 vote287 views1 answer
Mysql extract days
SQL
4 votes330 views1 answer
Rename stored procedure in sql server
SQL
0 vote285 views1 answer
Porcentaje sql
SQL
19 votes262 views1 answer
Sqrt(-1)
SQL
5 votes276 views1 answer
How to check nls timestamp format in oracle
SQL
0 vote331 views1 answer
Pgadmin save data greyed out
SQL
0 vote288 views1 answer
Copied text from internet not inserting in mysql
SQL