如何在我的 sql insert 语句的语法中找到错误？

Question

I cannot find the problem in the syntax for my insert into statement. I am trying to insert it into certain columns. I have a feeling that it has to do with the quotes, but I am not sure.

    @Override
public void addToDatabase() {
    try {
        // 1. get a connection to database
        Connection myConn = DriverManager.getConnection("jdbc:mysql://127.0.0.1:8889/Bank", "kculbreth36",
                "Gerder11");
        // 2. create a statement
        Statement st = myConn.createStatement();

        st.executeUpdate("INSERT INTO budgeting (Food, Entertainment, Clothes, Utilities, Total Spendings)"
                + " VALUES (food, entertainment, clothes, utilities, totalValue)");
        conn.close();

    } catch (Exception exc) {
        exc.printStackTrace();
    }
}

Answer 1

Having SQL like

VALUES (food, entertainment, clothes, utilities, totalValue)

is making sql think that food etc are columns names not variables.

You are better off using a PrepaparedStatement like

"INSERT INTO budgeting (Food, Entertainment, Clothes, Utilities, Total Spendings)"
            + " VALUES (?, ?, ?, ?, ?)"

and then using the set methods

st.setString (1, food);  // assuming that food is a variable

or

st.setString(1, "Hotdog"); // for a hard-coded value

see https://docs.oracle.com/javase/7/docs/api/java/sql/PreparedStatement.html

edit also note the comment made by @MohamedSaligh