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Dynamically Display Columns with Page Break

 
SQL(179)

【Question】

My question is: How can I prepare template which will receive various number of columns in such way, that if they won’t fit to page, extra columns would be printed on a second page. For example

If I have 10 columns, but only 6 fit to the page 1, the rest would be displayed on page 2. Same functionality is available in Microsoft Excel.

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【Answer】

You can piece together the above result set with the stored procedure. But the coding is complicated. You can use esProc to prepare the report data source: convert a 10-column, N-row result set to a 5-column, N*2-row one and add column headers to each page. The esProc SPL (Structured Process Language) script is as follows:

 

A

1

$select * from tb1

2

=create(c1,c2,c3,c4,c5)

3

=A1.group((#-1)\6)

4

=A3.run(A2.record(["column1","column2","column3","column4","column5"]|   ~.conj([column1,column2,column3,column4,column5])|["column6","column7",   "column8","column9","column10"]|~.conj([column6,column7,column8,   column9,column10])))

A1: Execute a SQL-like query to retrieve the 10-column, N-row result set.

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A2: Create an empty two-dimensional table.

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A3: Group A1’s table every 6 rows. The sign # represents row number and "\" enables a full division.

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A4: Loop each of A3’s group to insert 14 rows to A2’s empty table in such a way: headers and 6 rows of the first 5 columns and headers and 6 rows of the last 5 columns. The sign ~ represents the current group.

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A reporting tool can accesses an SPL script through esProc JDBC and calls it in the same way as calling a database result set. More explanations can be found in How to Call an SPL Script in Java.


SQL(179)
 
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