Prepared statement with dynamic where clause

Question

I have a search page with multiple search criteria

1. Employee Name
2. Employee Id
3. Date of joining
4. Department

etc

U

Answer 1

In such conditions I prefer adding 1=1 in where clause so that you dont have to keep track of where to insert AND.

String selectClause = "SELECT * FROM EMPLOYEES WHERE 1=1 ";
if(StringUtils.isNotBlank(empName)){
   selectQuery += "AND EMP_NAME = " + empName;
}
if(StringUtils.isNotBlank(empID)){
   selectQuery += "AND EMP_ID = " + empID;
}
//... and so on ...

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