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Altering Tables

Altering Tables. Adding a Column: Syntax. ALTER TABLE table ADD ( column datatype , column datatype , ...);. Adding a Column: Example. ALTER TABLE s_region ADD (comments VARCHAR2(255)); Table altered. Modifying a Column: Syntax. ALTER TABLE table MODIFY ( column datatype ,

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Altering Tables

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  1. Altering Tables

  2. Adding a Column: Syntax ALTER TABLE table ADD (column datatype , column datatype , ...);

  3. Adding a Column: Example ALTER TABLE s_region ADD (comments VARCHAR2(255)); Table altered.

  4. Modifying a Column: Syntax ALTER TABLE table MODIFY (column datatype, column datatype, ...);

  5. ALTER TABLE s_dept DROP name; Table altered.

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