MySQL misunderstands the value with the column name

All we need is an easy explanation of the problem, so here it is.

I have executed a simple query

select * from content_model_reference cm where cm.element_id = "1.B.1.g";

The MySQL gives me this error message

ERROR 1054 (42S22): Unknown column '1.B.1.g' in 'where clause'

I don’t have any idea why this happens on the production server. The above query works fine at local.

How to solve :

I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.

Method 1

The problem is most likely with the double-quotes. Some database engines will treat this as a column name rather than a value.

SELECT *
  FROM content_model_reference cm 
 WHERE cm.element_id = '1.B.1.g';

This should give you what you’re looking for.

Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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