The difference and analysis between the PULL mode and the PUSH mode of the crystal report

SQL is complex, the key is to handle the values correctly. It is best to do the calculations you need directly through SQL. Since you don't know how to manipulate dataset objects, you can do it directly on SQL.

If you feel like a simple SQL can't do your calculations. You can write a function or a stored procedure implementation. The reason for the null value is that your SQL must not have been debugged yet.

You first debug your SQL in the SQL query analyzer, and then graft it into the program to create a dataset.

What are you doing with all this trouble?

How good it is to drag a third-party control directly.

Beautiful and time-saving.

1.There are many rows of data in the table, how can I display only 10 rows of data per page?

Just from the left field. Drag. Just put 10 on the right.

2.In the crystal report, how to make Xun Da Mo programming can achieve the total prosperity and filial piety of a certain data field in these 10 rows.

In the data Tanna source on the left. Create a new field with a function of type vb.

If you have set parameters in your report file, you should use pull mode, and if you use push mode, you can pass the filtered dataset to the report.

I happen to be doing it lately, and I'm also exploring it.

This on-demand requirement can only be used in push mode, and the dataset needs to be added first. XSD dataset Then add the crystal report to bind it to the dataset just now, write ** in the background to operate on the table in the database, and then fill the operation result into the dataset, so that when you call the crystal report, it can be displayed according to your needs.

Basically, it's the process, and the details can be looked up online.

I don't understand Xun Teasing, if you fill in the relevant parameters of the number finger data source in the VC, you don't need to manually select it in the mu year.

You still step through the debugging process to see what went wrong.

You go to the Crystal Report Manager and look up the ID of the report you have saved

Modify your program to find the corresponding RPT by or Ant ID

Is it the RPT published on the Crystal Report Bridge Wisdom server? I can only guess that the program didn't answer Min Tuan.