This tutorial will teach you on how to create reports in Visual Basic .NET 2008 using Crystal Reports. This is a step by step guide on how I create the report on "Weekly Sales Report using Crystal Reports".

This guide is not intended for advance user. So please don't react if you find a basic explanation on this tutorial.

This assumes that you have already attached the database that is included in the zip file of "Weekly Sales Report ".

When you insert record to your table there are some cases that you need to modify the data. Or you may want to update it to the latest record.

The SQL update is there to help us modify the existing values of the table, the SQL update statement used the same column name as insert statement and the new value that you want to placed and the table name to update the data successfully.

The syntax of SQL update statement is as follows:

SQL Insert command is used to save record into a database in a specific table.

The SQL Insert command has the following syntax:

The select command is used to retrieve data from the tables.

Consider the following table:

Users:

SQL is not syntax strict like JavaScript which mean to say that in SQL uppercases and lowercases don’t matter as long as you have spelled them correctly.

For example:

SQL is an acronym for Structure Query Language, it is a language which helps program to communicate with the databases, regardless of the type of the database, the SQL syntax is almost the same except for extended commands which certain DBMS support or do not support or simply have its own versions or dialects.