Conversion between 1 datetime and String
When using the extracted date data
date_format (CREATE_DATE, '% Y-% m-% d% H:% i:% s') as CREATE_TIME
When inserting data
to_date (# {CREATE_DATE}, ' % Y-% m-% d% H:% i:% s')
2 taken String Functions
left (string, len) length, taken from the left bit
right (string, len) length, taken from the right place
substring (string, startlen) taken from the start to the end position startlen
substring (string, startlen, len) taken from the start len bit position startlen