# RazorSQL

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# SQL Anywhere Alter Table

The SQL Anywhere Alter Table Tool allows users to visually alter tables. The Alter Table Tool can generate and/or execute the SQL that corresponds to any table alterations specified by the user.

The following options are available for the SQL Anywhere Alter Table Tool.

Add Column - Adds a column to a table
Add Primary Key - Adds a primary key to a table
Add Foreign Key - Adds a foreign key to a table
Add Constraint - Adds a check constraint to a table
Drop Column - Drops a column from a table
Drop Constraint - Drops a check constraint from a table
Drop Primary Key - Drops a primary key from a table
Rename Table - Renames a table
Rename Column - Renames a column

Listed below are some sample SQL statements generated by the Alter Table Tool.

ALTER TABLE demo.DBA.employee ADD newcol char(25) NOT NULL
ALTER TABLE demo.DBA.employee ADD PRIMARY KEY (ssn)
ALTER TABLE demo.DBA.employee
ADD FOREIGN KEY (dno)
REFERENCES demo.DBA.department(dnumber)
ALTER TABLE demo.DBA.employee RENAME ssn TO newssn