如何替换notepad ++正则表达式中的以下内容？

Question

I have SQL insert statement. One of values is date which i need to replace.

Insert into table (column_a, column_b) values ('test',to_date('01/DEC/15','DD/MON/RR'));

I have over 1000s of Insert SQL statement as above.

I want to replace value of column_b which has format "to_date('01/DEC/15','DD/MON/RR')" date can change within function. I want to replace column_b value with "SYSDATE" for all rows.

I tried following nothing is working.

^[to_date].*

/to_date([a-zA-Z0-9/,'])+/

/^to_date(.*$/

Can someone help?

Answer 1

Insert into table (column_a, column_b) values ('test',to_date('01/DEC/15','DD/MON/RR')); to_date('

If syntax of to_date function is correct throughout, this will satisfy your requirements:

to_date\([^)]+\)

What this regular expression means:

• to_date ← find this literal string
• \\( ← followed by an open parenthesis. The backslash is an "escape character." You need to "escape the parenthesis," because parentheses are special characters in regex used to define a group.
• [^)] ← followed by 1 or more of any character except a closing parenthesis. The brackets indicate a character set [] . The leading caret ^ negates the character set ("not this set").
• \\) ← followed by a closing parenthesis. Again, since this is meant to be a literal parenthesis and not the closing parenthesis of a regex group, the character must be escaped.

Answer 2

Answer

to_date\(.+?\)

This matches...

• the literal to_date(
• .+? - a non-greedy / lazy match for one or more of any character
• the literal )

---

Here's where you were going wrong

• Any use of ^ - this is the "start of string" anchor. Since the string you're looking for never appears at the start, this will never match.
• [to_date].* - this is a character class matching zero-or-more of the characters inside, ie "t", "o", "_", "d", "a", or "e"
• to_date([a-zA-Z0-9/,'])+ - the parentheses here aren't escaped so instead of matching literal ( and ) , they form a capture group for the character class inside. Since you missed the literal parentheses, this will never match.
• to_date(.*$ - this is an invalid expression as you're missing the closing ) for the capture group

Answer 3

In my opinion, in this situation, the simplest regular expression is:

to_date.{25}

This expression means literal string "to_date" and 25 characters after it .

It will work.