F. Features Introduced in Ingres 9.1 (Ingres 2006 Release 2) : New Features in the DBMS Server : Automatic Coercion Between Integers and Strings
 
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Automatic Coercion Between Integers and Strings
The DBMS Server performs automatic coercion between integer/float data types and char, varchar, nchar, or nvarchar data types. For example, an INSERT can place a quoted string value into an integer column or a database procedure can have an assignment statement that assigns a float value to a char variable—all without using explicit coercion functions such as CHAR() or INT4().