Java - How to get Column name on Result Set [duplicate]

Answer 1

Get the metadata

ResultSetMetaData metaData = rs.getMetaData();

Then you can do:

String columnName = metaData.getColumnName(int index);

• ResultSetMetaData doc

Answer 2

ResultSetMetaData metaData = resultSet.getMetaData();
int count = metaData.getColumnCount(); //number of column
String columnName[] = new String[count];

for (int i = 1; i <= count; i++)
{
   columnName[i-1] = metaData.getColumnLabel(i);
   System.out.println(columnName[i-1]);
}

Answer 3

Try this.

      ResultSetMetaData meta = resultset.getMetaData(); 

      Integer columncount = meta.getColumnCount();

      int count = 1 ; // start counting from 1 always

      String[] columnNames = new String[columncount];

      while(count<=columncount){

         columnNames [count-1] = meta.getColumnLabel(count);
         count++;

      }

Since here your expecting is to get the columns alias instead of column name, so you have to use ResultSetMetaData.getColumnLabel instead of ResultSetmetaData.getColumnName.

Answer 4

Get ResultSetMetaData using ResultSet#getMetaData():

ResultSetMetaData meta = rs.getMetaData();

And then to get column name of 1st column:

String col1Name = meta.getColumnLabel(1);

Similarly to get column name of 2nd column:

String col2Name = meta.getColumnLabel(2);

Answer 5

rs.getMetaData().getColumnName(int i);

and do not concat the query param!