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A couple of years ago, I decided to self-publish new books about iText, as opposed to working with a publisher as I did before for the “iText in Action” books. This led to a book about digital signatures that is available for download¹ on the iText site, and a book called “The ABC of PDF”² published on LeanPub. The goal of “The ABC of PDF” was to start with a book that looks at PDF at the lowest level, examining the syntax of a PDF file and a PDF page, and then to continue writing a series of books that explain how to use iText on a higher level, answering questions such as: How to create a PDF from scratch? How to create PDF from HTML? How to fill out PDF forms? How to parse a PDF file? … However, in spite of the fact that almost 15,000 people downloaded “The ABC of PDF”, it turned out that people really wanted me to write a different kind of book. I’ve received many comments through LeanPub from people who were disappointed that the ABC-book didn’t explain how to use iText. T...

Thỉnh thoảng khi bạn tạo file bacpac, bạn có thể gặp bảng thông báo lỗi như sau: Nguyên nhân là thuộc tính MS_Description không được hỗ trợ bởi export data-tier application utility.

SELECT major_id, minor_id, t.name AS [Table Name], c.name AS [Column Name], value AS [Extended Property] FROM sys.extended_properties AS ep INNER JOIN sys.tables AS t ON ep.major_id = t.object_id INNER JOIN sys.columns AS c ON ep.major_id = c.object_id AND ep.minor_id = c.column_id WHERE class = 1; GO