Show how express any sql pattern regular expression
To express any SQL pattern as a regular expression, you can use the following guidelines:
Identify the escape character: In SQL, the escape character is a user-defined character that precedes the special characters "_" (underscore), "%" (percent-sign), or another occurrence of the escape character itself to give them their literal meaning. Let's assume that the escape character is denoted by "e" in this example.
Build the regular expression: Concatenate the modified pattern elements to form the final regular expression.
Here's an example to illustrate the conversion process:
Replace "%" with ".*": "abc.def.*ghe"
Replace "e" (escape character) with "": "abc.d.f.*ghe"
