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Get data from MySql table and store into array then write to antoher table
Posted on 2013-01-07
I need to write a script that will process a few MySql queries, store the results, then write the results to another MySql table. I then need this to run on my CentOS server as a cron job daily.
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3 Comments
Can you be more specific? What are your queries? Store the results where, besides the other MySQL table? What's the structure of the tables involved?
If the requirement is simple enough and you really need to just store to another table it may be possible to just have an SQL file that contains something like:
insert into new_table (col1, col2, col3, col4) select a, b, c, d from table1 join table2....
Then just call have cron call: mysql -u username --password=yourpassword databasename < file.sql (or have put that in a shell script and have cron call that instead)
If the requirement is simple enough and you really need to just store to another table it may be possible to just have an SQL file that contains something like:
insert into new_table (col1, col2, col3, col4) select a, b, c, d from table1 join table2....
Then just call have cron call: mysql -u username --password=yourpassword databasename < file.sql (or have put that in a shell script and have cron call that instead)
I basically want to run a few SELECT COUNT statements and store the results in another table since the counts change daily.
Example:
SELECT count(*) from database1.extensions;
I then want to write the count result to another table. The other table will only have 3 fields, company name, date, and the result from the SELECT.
Example:
SELECT count(*) from database1.extensions;
I then want to write the count result to another table. The other table will only have 3 fields, company name, date, and the result from the SELECT.
Where will you get company name? It would really help if you provide all the details. Assuming that's static, you can create an sql file maybe named do_counts_for_days.sh.sql that contains this:
Then create an executable file maybe named do_counts_for_days.sh that contains this:
(replace /usr/bin/mysql with your actual full path to mysql client)
Then call do_counts_for_days.sh from cron
insert into stats_table (`company_name`, `date`, `result`) select 'company a', curdate(), count(*) from database1.extensions;
insert into stats_table (`company_name`, `date`, `result`) select 'company a', curdate(), count(*) from database1.somewhere_else;
insert into stats_table (`company_name`, `date`, `result`) select 'company a', curdate(), count(*) from database1.another_source;
Then create an executable file maybe named do_counts_for_days.sh that contains this:
/usr/bin/mysql -u username --password=thepassword database_name < do_counts_for_days.sql
(replace /usr/bin/mysql with your actual full path to mysql client)
Then call do_counts_for_days.sh from cron
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