A bit of background: I am trying to create a script that formats SQL statements. I have gotten so far as to add new lines based on certain match criteria like commas, keywords etc. In the process, I end up adding newlines where I don't want.
For example: substr(colName, 1, 10) becomes:
substr(colName,
1,
10) - I don't want this particular comma to be replaced with a newline.
With that in mind, my questions are:
1. Is there a way I can ignore the commas within braces - ( )
2. If not, how can I delete the newlines on lines starting with numbers, i.e. look for numbers at the beginning of a line and remove the newline before it.
In other words, if my input is:
substr(colName,
1,
10)
my output should be: substr(colName, 1, 10).
Any help is really appreciated! Thanks in advance.
Jay.
---------- Post updated 01-19-10 at 12:05 AM ---------- Previous update was 01-18-10 at 11:13 PM ----------
Another thing I forgot to mention: can I make the script intelligent enough to recognize negative numbers as well? Another example along the lines of the substr above is:
add_months(somedate, -6)
is becoming
add_months(somedate,
-6).
Hope I got your question correctly, But I used the different approach to solve this issue ( i,e I didnt check if the new line appears before the line starts with the number ). It works for me. You can try this out.
Thanks for your response, daptal. There seems to be a bit of a problem though. I am on a solaris machine, by the way. When I run your awk statement, I get an error:
awk: syntax error near line 1
awk: illegal statement near line 1
When I use nawk or gawk though, the command does run successfully, but does the opposite of what I was expecting, i.e. adds an extra newline instead of the comma. My output in these two cases was:
substr(colName
1
10)
add_months(somedate
-6)
Thanks!
---------- Post updated at 01:36 AM ---------- Previous update was at 01:26 AM ----------
Quote:
Originally Posted by skmdu
Hope I got your question correctly, But I used the different approach to solve this issue ( i,e I didnt check if the new line appears before the line starts with the number ). It works for me. You can try this out.
$ sed '
:loop
$!N
s/\(.*,\)\n\(.*,\)/\1\2/
/\(.*\)\n\(.*)\)/{
s/\(.*\)\n\(.*)\)/\1\2/
p;d;
}
t loop' inputfile
substr(colName,1,10)
add_months(somedate,-6)
Thanks for your response, skmdu! This code works when my input is just the examples that I had quoted in my original post. There is a bit of a problem, though - and it is entirely because I didn't give you the entire picture. Here's a more complete input:
My input (if you notice, its all in one line):
Code:
SELECT C.column1, A.column4, (SUBSTR(A.column8, 1, 2)), (SUBSTR(A.column9, 3, 1)), CASE WHEN (SUBSTR(A.column9, 3, 1) = 'V') THEN B.column1 ELSE SUBSTR(A.column9, 1, 2) END, B.column2 FROM TABLE1 A, TABLE2 B, TABLE3 C, TABLE4 D, TABLE5 E WHERE (((((A.column3 = C.column3) AND (A.column4 = B.column4)) AND (A.column5 = D.column5)) AND (A.column6 = E.column6)) AND (A.column6 IN ('1', '2')));
My output so far (without your sed statement):
Code:
SELECT
C.column1,
A.column4,
(SUBSTR(A.column8,
1,
2)),
(SUBSTR(A.column9,
3,
1)),
CASE
WHEN (SUBSTR(A.column9,
3,
1) = 'V') THEN B.column1
ELSE SUBSTR(A.column9,
1,
2)
END,
B.column2
FROM
TABLE1 A,
TABLE2 B,
TABLE3 C,
TABLE4 D,
TABLE5 E
WHERE (((((A.column3 = C.column3)
AND (A.column4 = B.column4))
AND (A.column5 = D.column5))
AND (A.column6 = E.column6))
AND (A.column6 IN ('1',
'2')));
Output when your sed statement is included in my script that produced the above output:
Code:
SELECT
C.column1,
A.column4, (SUBSTR(A.column8, 1, 2)), (SUBSTR(A.column9, 3, 1)),
CASE
WHEN (SUBSTR(A.column9, 3, 1) = 'V') THEN B.column1
ELSE SUBSTR(A.column9, 1, 2)
END,
B.column2
FROM
TABLE1 A,
TABLE2 B, TABLE3 C, TABLE4 D,
TABLE5 E
WHERE (((((A.column3 = C.column3) AND (A.column4 = B.column4))
AND (A.column5 = D.column5)) AND (A.column6 = E.column6))
AND (A.column6 IN ('1', '2')));,
Notice how some lines are joined because of extra commas or braces being present on a specific line. Also, an additional comma was added at the end, after the semi-colon.
Again, I realize it was because I had not given you much to work with to begin with. Thanks again for your help so far! Really, really appreciate it.
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