find a line based on string pattern and move it X places - awk

Question

I want to move the 1st instance of AND F.col_x IS NOT NULL pattern ( for each of the blocks 23 24 25 etc ) that follows the WHERE F.col_x = D.col_x pattern either of these ways
--Look for brackets Just before group by and add it in there
--alternately move that line 1 line below from where it was taken.
Either way the results would be the same
INPUT
*22
Select ((MYLILFUNC(F.col_x,-99999))) AS WIDTH,
COUNT(*) AS SIZE
FROM MYDB.BGSQLTB F where NOT EXISTS ( sel '1' from MYDB.col_x D
WHERE F.col_x = D.col_x
AND F.col_x IS NOT NULL
AND D.col_x IS NOT NULL )
GROUP BY F.col_x;
*23
Select ((MYLILFUNC(F.COL_y,-99999))) AS WIDTH,
COUNT(*) AS SIZE
FROM MYDB.BGSQLTB F where NOT EXISTS ( sel '1' from MYDB.DIM_DRG_CODE D
WHERE F.COL_y = D.COL_y
AND F.COL_y IS NOT NULL
AND D.COL_y IS NOT NULL )
GROUP BY F.COL_y;
*24
Select ((MYLILFUNC(F.COL_Z,-99999))) AS WIDTH,
COUNT(*) AS SIZE
FROM MYDB.BGSQLTB F where NOT EXISTS ( sel '1' from MYDB.COL_Z D
WHERE F.COL_Z = D.COL_Z
AND F.COL_Z IS NOT NULL
AND D.COL_Z IS NOT NULL )
GROUP BY F.COL_Z;
*25
Select ((MYLILFUNC(F.COL_XXX,-99999))) AS WIDTH,
COUNT(*) AS SIZE
FROM MYDB.BGSQLTB F where NOT EXISTS ( sel '1' from MYDB.COL_XX D
WHERE F.COL_XXX = D.COL_XXX
AND F.COL_XXX IS NOT NULL
AND D.COL_XXX IS NOT NULL )
GROUP BY F.COL_XXX;
OUTPUT
*22
Select ((MYLILFUNC(F.col_x,-99999))) AS WIDTH,
COUNT(*) AS SIZE
FROM MYDB.BGSQLTB F where NOT EXISTS ( sel '1' from MYDB.col_x D
WHERE F.col_x = D.col_x
AND D.col_x IS NOT NULL ) AND F.col_x IS NOT NULL
GROUP BY F.col_x;
*23
Select ((MYLILFUNC(F.COL_y,-99999))) AS WIDTH,
COUNT(*) AS SIZE
FROM MYDB.BGSQLTB F where NOT EXISTS ( sel '1' from MYDB.DIM_DRG_CODE D
WHERE F.COL_y = D.COL_y
AND D.COL_y IS NOT NULL ) AND F.COL_y IS NOT NULL
GROUP BY F.COL_y;
*24
Select ((MYLILFUNC(F.COL_Z,-99999))) AS WIDTH,
COUNT(*) AS SIZE
FROM MYDB.BGSQLTB F where NOT EXISTS ( sel '1' from MYDB.COL_Z D
WHERE F.COL_Z = D.COL_Z
AND D.COL_Z IS NOT NULL ) AND F.COL_Z IS NOT NULL
GROUP BY F.COL_Z;
*25
Select ((MYLILFUNC(F.COL_XXX,-99999))) AS WIDTH,
COUNT(*) AS SIZE
FROM MYDB.BGSQLTB F where NOT EXISTS ( sel '1' from MYDB.COL_XX D
WHERE F.COL_XXX = D.COL_XXX
AND D.COL_XXX IS NOT NULL ) AND F.COL_XXX IS NOT NULL
GROUP BY F.COL_XXX;
My search pattern using Ed is a bit too wide and takes more lines and I am not sure how I can get the moving logic done because it is relative to each selected line.

Answer 1

You can do this in a couple ways. With sed you can do
sed -e '/AND F\.[a-zA-Z_]* *IS *NOT *NULL/ { h; d }; /GROUP BY/ { H; x }'
What happens is anytime the first regular expression matches, the { h; d }; commands store the line in the hold buffer and move to the next line without outputting anything. Whenever the second regexp matches, the { H; x } append the current line to the hold buffer with a newline in between and then swap the hold buffer and the current line buffer. Then sed will automatically print out the pattern line. It's easy for this not to work correctly depending on your input, but it works fine for the sample you provided.
In awk it would be
awk 'tolower($0) ~ /and f.col_[a-z]* is not null/ {save = $0; next} /GROUP BY/ { print save } {print}'