Introduce el texto aquí

Introduce el texto aquí

1. Cambiar tipo de dato sin usar using (ALTER COLUMN)

   • ALTER TABLE column_name ALTER COLUMN column_name TYPE varchar;

2. Cambiar tipos de datos de dos columnas en una operación sin utilizar using (ALTER TABLE)

   • ALTER TABLE column_name ALTER COLUMN column_name TYPE varchar, ALTER COLUMN column_name TYPE varchar;

3. Eliminar una columna (DROP COLUMN)

   • ALTER TABLE table_name DROP COLUMN column_name;

4. Agregar varias columnas (ADD)

   • ALTER TABLE table_name ADD column_name datatype, ADD column_name datatype;

5. Cambiar tipos de datos de dos columnas en una operación utilizando using (ALTER TABLE)

   • ALTER TABLE column_name ALTER COLUMN column_name TYPE int USING column_name::integer, ALTER COLUMN column_name TYPE int USING column_name::integer;

6. Cambiar tipo de dato usando using (ALTER COLUMN)

   • ALTER TABLE column_name ALTER COLUMN column_name TYPE int USING column_name::integer;

7. Agregar una columna (ADD COLUMN)

   • ALTER TABLE table_name ADD column_name datatype;

8. Eliminar varias columnas (DROP COLUMN)

   • ALTER TABLE table_name DROP COLUMN column_name, DROP COLUMN column_name;

9. Renombrar tabla (RENAME TO)

   • ALTER TABLE table_name TO new_table_name;

10. Renombrar columna (RENAME COLUMN)

    • ALTER TABLE table_name RENAME COLUMN column_name TO new_column_name;

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