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rodolico |
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drop table license;
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create table license (
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license_id int unsigned not null auto_increment,
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client_id int unsigned null comment 'link to client table',
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device_id int unsigned null comment 'link to device table',
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license text not null comment 'the actual license text',
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license_product_id int unsigned not null references license_product(license_product_id),
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added_date date default null comment 'date the license used on this machine',
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removed_date date default null comment 'date license removed from this machine',
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primary key (license_id)
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) comment 'Holds the license and links to machine installed on' ;
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drop table license_product;
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create table license_product (
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license_product_id int unsigned not null auto_increment,
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name text comment 'name of the license',
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primary key ( license_product_id )
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) comment 'a list of all products we track license for';
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select
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license.license 'License',
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license_product.name 'Product',
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ifnull(device.name,'--- Available ---') 'Installed On'
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from
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license join license_product using (license_product_id)
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left outer join device using (device_id)
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order by license_product.name, device.name;
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