Storing multiple sql queries output into variable by running sql command only once

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# 1  
Old 05-25-2016
Lightbulb Storing multiple sql queries output into variable by running sql command only once

Hi All,

I want to run multiple sql queries and store the data in variable but i want to use sql command only once. Is there a way without running sql command twice and storing.Please advise.

Eg :

Select 'Query 1 output' from dual; 

Select 'Query 2 output' from dual;

I want to store output for above query by running sql command script only once

Moderator's Comments:
Mod Comment Please use code tags as required by forum rules!

Last edited by RudiC; 05-25-2016 at 08:37 AM.. Reason: Added code tags
# 2  
Old 05-26-2016
You can do this in a few ways.
  • You can call sqlplus and pass it a deck/file of multiple SQL commands.
  • You can call sqlplus in what is called a here document and pass in the commands from your script
  • Probably others......

How much SQL code are you planning to pass in, and will it be static or based on variables in the main script?

This User Gave Thanks to rbatte1 For This Post:
# 3  
Old 05-27-2016
This needs bash:

sql_output="$(echo "select yourfield from yourtable;" \
      | mysql -uusername -p"password" database)"

or a little more secure...

sql_output="$(echo "select yourfield from yourtable;" \
      | mysql --defaults-extra-file=$HOME/.my.cnf_with_password -uusername database)"

mysql option "--skip-column-names" may be relevant too.

Last edited by stomp; 05-27-2016 at 11:01 AM..
This User Gave Thanks to stomp For This Post:
# 4  
Old 06-04-2016
It might be easier with a Here Document:-

sql_output=`sqlplus -S <<-EOSQL
select 'query 1' from dual ;
select 'query 2' from dual ;

I've not checked this, but it is pretty close, I think. The commands to be input to sqlplus as though it was an interactive session are between the two EOSQL markers.


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