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Full Discussion: Executing SQL's in parallel
Top Forums UNIX for Beginners Questions & Answers Executing SQL's in parallel Post 303041072 by member2014 on Wednesday 13th of November 2019 07:53:47 PM
Old 11-13-2019
Executing SQL's in parallel

Hi Folks,

I have requirement to pull a bunch of SQL's from a table in DB and execute them in parallel and update the status of each query as and when they complete. Can you please help me with ideas on how this can be achieved?

Code:
 
create table list_of_sql
(
id number,
full_sql varchar2(255),
status varchar2(50),
create_dt timestamp,
update_dt timestamp
)

id - auto-generated number
full_sql - will have the sql to be executed
status - P : Pending (when the sql is added but not picked up for execution yet)
A : Active (Once the query is picked up for execution and is running)
C : Completed (Once the query execution has completed)

It will be easy to do this sequentially but the requirement is to run the sql's in parallel and at a time there will be no more than 10 sql;s in the table.

Thanks in advance.
 

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cvm-sql(7)						 Miscellaneous Information Manual						cvm-sql(7)

NAME
cvm-sql - CVM SQL Framework QUERY SUBSTITUTION
$VAR and ${VAR} are replaced with the quoted value of the environment variable named VAR. Use the second form when VAR contains anything other than alpha-numeric or underscore (_) characters. Do not include quotes in the query. The variables account and domain contain the account and domain names given by the CVM client. $$ is replaced with a single dollar sign. QUERY RESULTS
The query must produce the following fields exactly in order. All required fields must not be null or empty. 1. Password, encrypted with crypt(3) (required) 2. Actual account name (required) 3. User ID (integer) (required) 4. Group ID (integer) (required) 5. Directory (required) 6. Real name (optional) 7. Login shell (optional) 8. Group name (optional) 9. Domain name (optional) 10. System account name (optional) 11. System account directory (optional) 12. Mailbox path (optional) DEFAULT QUERY
SELECT password, username, userid, groupid, directory, realname, shell, groupname, domain, sys_username, sys_directory FROM accounts WHERE username=$account AND domain=$domain SEE ALSO
cvm-mysql(8), cvm-pgsql(8), cvm-pwfile(8), cvm-qmail(8), cvm-unix(8), cvm-vmailmgr(8), cvm-benchclient(8), cvm-checkpassword(8), cvm-test- client(8) http://untroubled.org/cvm/cvm.html cvm-sql(7)
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