May 2006
Intermediate to advanced
536 pages
15h 13m
English
Content preview from Inside Microsoft® SQL Server™ 2005Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Dynamic Pivot
As another exercise, assume that you’re given the task of writing a stored procedure that produces a dynamic pivot in the database you are connected to. The stored procedure accepts the following parameters (all Unicode character strings): @query, @on_rows, @on_cols, @agg_func and @agg_col. Based on the inputs, you’re supposed to construct a PIVOT query string and execute it dynamically. Here’s the description of the input parameters:
@query. Query or table/view name given to the PIVOT operator as input
@on_rows. Column/expression list that will be used as the grouping columns
@on_cols. Column or expression to be pivoted; the distinct values from this column will become the target column names
@agg_func. Aggregate function (MIN, MAX, ...
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