How to get a new column with total number of rows with value mysql

Question

I have table that looks like this

      Date|Col1|Col2|Col3

01-01-2016|abc |    |    |

02-01-2016|xyz |188 |    |

03-01-2016|100 |abc |155 |

I need to write a query that will give me a new column with total number of columns with value for each day.

      Date|Col1|Col2|Col3|count|

01-01-2016|abc |    |    |  1  |

02-01-2016|xyz |188 |    |  2  |

03-01-2016|100 |abc | 155|  3  |

In my actual data I have about 30 columns that I need to count for.

Answer 1

SELECT *,(IF(col1 IN (NULL,'') , 0, 1)+ IF(col2 IN (NULL,''), 0, 1)+ IF(col3 IN (NULL,''), 0, 1)) as count 
from table_name
group by date

The sample table:

The output:

Hope this solves!