In my Java entity class, I have a Boolean field that corresponds to different data types in various databases. Specifically, in PostgreSQL, this field is of type boolean
; in MySQL, it is tinyint
; and in Oracle, it is NUMBER(3)
.
When executing HQL queries, I use a WHERE
clause to compare this Boolean field to the integer value 1
. For example, if the Boolean column is named checked
, the WHERE
clause is written as follows: WHERE checked = 1
.
While this approach works for MySQL and Oracle, it results in an error in PostgreSQL: “operator does not exist: boolean = integer.”
Is there a way to handle implicit type casting to prevent such errors and ensure compatibility across all these databases?