i have huge db in which unknowingly i kept the column as varchar which actually has to be datetime. The data stored in it is in '16/September/2011' format.
Now i want to convert the data type to datetime without losing the data.
ie 2011-09-11 rest part can be ignored
is it possible?
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Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions.
Consider email address RFCs:
Look at HTML5 form input element (with type=email) regex pattern: