Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_21117 ( "Company" text, "ICB Sector" text, "Ticker symbol" text, "Index weighting (%) at 17 January 2013" text, "Market cap. at April 2013 (\u20ac)" text )

### Question ###
Name the index weighting % for 17 januaary 2013 for rno

### Accurate SQL ###

SELECT "Index weighting (%) at 17 January 2013" FROM table_21117 WHERE "Ticker symbol" = 'RNO'