How do you get ResultSet from CallableStatement?
Retrieving Results from a procedure: CallableStatement cstmt = con. prepareCall(“{call sampleProcedure()}”); Execute the above created callable statement using the executeQuery() method this returns a result set object. //Executing the CallableStatement ResultSet rs1 = cstmt.
What is the return type of executeQuery () method?
executeQuery : Returns one ResultSet object. executeUpdate : Returns an integer representing the number of rows affected by the SQL statement. Use this method if you are using INSERT , DELETE , or UPDATE SQL statements.
How do you find the length of a ResultSet?
println(“Total number of rows in ResultSet object = “+rowCount); Simply iterate on ResultSet object and increment rowCount to obtain size of ResultSet object in java. rowCount = rs. getRow();
What is the difference between execute () executeQuery () and executeUpdate () methods in JDBC?
Statement interface of JDBC which are used to execute SQL statements. executeQuery() command used for getting the data from database whereas executeUpdate() command used for insert,update,delete or execute() command used forany kind of operations.
Can we use two ResultSet in Java?
Solution : Using one instance of Statement per ResultSet needed. merging the queries to only have one.
Which method is used to retrieve the result set created?
As mentioned previously, you access the data in a ResultSet object through a cursor, which points to one row in the ResultSet object. However, when a ResultSet object is first created, the cursor is positioned before the first row. The method CoffeeTables. viewTable moves the cursor by calling the ResultSet.
What is difference between Statement PreparedStatement and CallableStatement?
It is used when you want to use the database stored procedures. CallableStatement can accept runtime input parameters….Difference between CallableStatement and PreparedStatement :
| CallableStatement | PreparedStatement |
|---|---|
| Performance is very high. | Performance is better than Statement. |
What is ResultSet interface?
ResultSet interface represents the result set of a database query. A ResultSet object maintains a cursor that points to the current row in the result set. The term “result set” refers to the row and column data contained in a ResultSet object.
How do I find the number of rows in a ResultSet?
Getting the number of rows using methods The last() method of the ResultSet interface moves the cursor to the last row of the ResultSet and, the getRow() method returns the index/position of the current row.
How do I find the number of columns in a ResultSet?
You can get the column count in a table using the getColumnCount() method of the ResultSetMetaData interface. On invoking, this method returns an integer representing the number of columns in the table in the current ResultSet object.