How do I replace multiple consecutive spaces with a single space?

I need to convert any occurrence of multiple consecutive spaces in a string to a single space. How do I create the regex pattern to do that?

r9973 wrote:
Sorry, more like: String test = "Some Text Here"Want to convert to String test = "Some Text Here"
Post the code that you used to test the regex. I just tried it and it worked fine for me. All you need to do is apply the regex replaceall to your string variable that holds the string
String test = "Some Text Here";
test = test.replaceAll(" +", " ");
System.out.println(test);And thats it.

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Replacing multiple spaces with a single space

Hi friends,
I have a string. It can have zero/one/multiple spaces. I want to make the multiple spaces to single space.
Here are the cases:
1. ' a b c d efg h' should be changed to 'a b c d e f g h'
2. ' a b c d e f g h ' should be changed to 'a b c d e f g h'
3. 'a b c d e f g h' should not be changed
4. 'abcdefgh' should not be changed
Both REPLACE and TRANSLATE do not help. I don't want to go for LOOP logic. Please help me to get it in SQL query.
Thanks in advance!

Hi,
964559 wrote:
Hi friends,
I have a string. It can have zero/one/multiple spaces. I want to make the multiple spaces to single space.
Here are the cases:
1. ' a b c d efg h' should be changed to 'a b c d e f g h'One solution is to post your string on this site, and then copy it back again. (See below for a more serious solution .)
This site is doing exactly what you want the function to do: it replaces multiple consecutive spaces with a single space. As a result, it's hard to see what you mean.
To preserve spacing on this site, type these 6 characters
\(small letters only, inside curly brackets) before and after each section where you want spacing preserved.
2. ' a b c d e f g h ' should be changed to 'a b c d e f g h'
3. 'a b c d e f g h' should not be changed
4. 'abcdefgh' should not be changed
Both REPLACE and TRANSLATE do not help. I don't want to go for LOOP logic. Please help me to get it in SQL query.
Thanks in advance!Regular expressions make this easy:SELECT TRIM ( REGEXP_REPLACE ( str
, ' +'
) AS compressed_str
FROM table_x;
You can use nested REPLACE calls to get the same results, but it's messy.
Edited by: Frank Kulash on Feb 5, 2013 10:18 AM
Added TRIM

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Looking for a way to replace multiple space characters in a row with a single space. For example, the text "abc abc" should look like "abc abc". I tried toying with replace, but it only works for the case of 2 spaces. Need a solution for the cases where there could be 2 or more spaces.
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Hi,
If you had to do this without regular expressions, you could use:
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How do I replace multiple consecutive spaces with a single space?

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