CODEWITHSUNDEEP
javasqljdbcderby
Anna
Anna

Reputation: 1

SQL in Java. How to INSERT INTO Derby table with WHERE condition

I have derby database with table TRIPS. I have 10 columns, but 2 columns:FAIR and TIP should be inserted separately (later when trip on taxi is finished).

Can you please help me to adjust SQL code?

I have this code and it is not working now:

public boolean saveInDB2(String id, String amount, String tip) {
        String writeString = "INSERT INTO TRIPS(FAIR, TIP) VALUES ('" + amount +"', '"+ tip +"')" + "WHERE ID = '"+ id +"'";
        try {
            st.executeUpdate(writeString);
        } catch (SQLException sqle){
            return false;
        }
        return true;
    }

Upvotes: 0

Views: 559

Answers (1)

Brandon Heck
Brandon Heck

Reputation: 81

Typically for an existing row, you wouldn't use an INSERT, but rather would use an UPDATE statement. INSERT statements are for new records.

Insert: https://www.w3schools.com/sql/sql_insert.asp Update: https://www.w3schools.com/sql/sql_update.asp

Upvotes: 1

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