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update stmt with case in shell script
i have update statement in printf in shell script
printf ("update security set shares = %d, info = \"%s\", shares2= %d where symbol = \"%s\" \ngo\n", Share1, desc, Share2, Symbol ) > out.sql
where i am getting the Share1, Symbol from a text file. but i dont want to update the table if share1 and share2 are blank but update just the desc if not empty update all the 2. There are possibilities with only share1 blank or share2 blank or both blank
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Answers
Your requirements are not very clear but it can be done something like ...
if ((Share1 != "") && (Share2 != ""))
{
printf ("update security set shares = %d, info = \"%s\", shares2= %d where symbol = \"%s\" \ngo\n", Share1, desc, Share2, Symbol ) > out.sql
}
else
{
printf ("update security set info = \"%s\" where symbol = \"%s\" \ngo\n", desc, Symbol ) > out.sql
}
Wait, are you guys writing for Bash? Does what you have work? (amit_g also??) I think it would need to look more like:
printf "update security set shares = %d, info = \"%s\", shares2= %d where symbol = \"%s\" \ngo\n" "$Share1" "$desc" "$Share2" "$Symbol" > out.sql
I'm not sure I understand what the conditions are either. I didn't understand the part about "update all the 2" and what happens if one or the other of Share1/2 is blank. Actually I guess I didn't understand the whole thing. Can you reword the requirements?
As I mentioned, your description of the problem is not quite clear but the general structure would be some. the else statement would execute if any of Share1 or Share2 is empty. You can separate them out if needed.
if ((Share1 != "") && (Share2 != ""))
{
printf ("update security set shares = %d, info = \"%s\", shares2= %d where symbol = \"%s\" \ngo\n", Share1, desc, Share2, Symbol ) > out.sql
}
else
{
if (Share1 == "")
{
printf ("update security set info = \"%s\" where symbol = \"%s\" \ngo\n", desc, Symbol ) > out.sql
}
if (Share2 == "")
{
printf ("update security set info = \"%s\" where symbol = \"%s\" \ngo\n", desc, Symbol ) > out.sql
}
}
if ((Share1 != "") && (Share2 != "") && (desc != ""))
{
#update when all have values
}
else
{
if (desc != "")
{
if ((Share1 != "") || (Share2 != ""))
{
#update when desc has value with either Share1 or Share2 empty
}
else
{
#update when desc has value and both Share1 and Share2 empty
}
}
else
{
#update when desc is empty
#Note: this case doesn't care of values in Share1/Share2 but can be added
}
}
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by: JimUPosted on 2009-11-04 at 14:22:47ID: 25744679
Which shell is that for?