How to get table name from oracle query?

[vijay Panner]

Hi,
I want to get table name and column name from query. i got column name. but i didn't get table name from the query. Please help me

[Sudheer Bhat]

From your post not really sure what you want to achieve. You may need to check dba_tables?

[Martin Vashko]

vijay Panner wrote:Hi,
I want to get table name and column name from query. i got column name. but i didn't get table name from the query. Please help me

I suppose that you've run a SQL query and are reading it using a resultset, and you're trying to obtain column and table names from the resultset.

The resultset does not contain column's table names, generally because it is not always possible to assign a table to a column in resultset. Consider this:
select 10 as A, T1.X + T2.Y, T1.X as C as B from T1 inner join T2 on (...)
Which table do columns A and B come from? And while the column C comes clearly from table T1, that table actually might not have a column named C at all.

If you're interested just in a set of tables a query uses, it might be possible to extract this information from the text of the SQL query. However, you'd need to parse the query according to the SQL syntax of the target database to do this for arbitrary SQL queries, which seems like a lot of work to me.

[Sunni srivastav]

I assume that you are using JDBC statement to process your sql query.Then,from the resultset you can get the resultsetMetadata which contains all the info about it i.e. Table names,Column Names number of columns retrieved,etc.You can use its object to get whatever you need.For eg:

			stmt = (Statement) conn.createStatement();
			/**
			Assuming query is your SQL query
			*/
			ResultSet resultSetObj = (ResultSet) stmt.executeQuery(query);

			/**
			 * Getting the metadeta from the resultset
			 * 
			 * */
			ResultSetMetaData rsmdObj =resultSetObj.getMetaData();
			//getting number of columns retrieved from resultset
			int numColumns = rsmdObj .getColumnCount();
			
						
			// Get the column names; column indices start from 1
				
				for (int i=0; i<numColumns; i++) 
				{
				columnName = rsmdObj.getColumnName(i+1);
				columnType =rsmdObj.getColumnTypeName(i+1);
				tableName=rsmdObj.getTableName(i+1);			
				System.out.println(columnName +":"+columnType+":"+tableName);
				
				}

There is no need for a sql parser if ResultSetMetadata can fullfill you need..but it has one limitation as it will fetch table name related to each column...