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_214479_8 ( y_ VARCHAR, _2011 VARCHAR, expression VARCHAR, month VARCHAR, d VARCHAR, e VARCHAR )

### Question ###
What is the y = 2011 when the expression is month = floor ((d + e + 114) / 31)?

### Accurate SQL ###

SELECT y_ = _2011 FROM table_214479_8 WHERE expression = month = FLOOR((d + e + 114) / 31)