project hours worked to be sum of tasks hours worked.
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        Published on 2010-03-31T09:31:40Z
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i have a sharepoint list called project . this list has column called hours worked. Then i also have a list called tasks. this list also has a column called hours worked. the task list also has a lookup field where we select project ID from project list.
Thus for each project we can have many tasks.
now tasks list items are created by individual users and i have to create such a mechanism that the hours worked in project list must always be the sum of hours worked in tasks of that project.
How can I achieve this.
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