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code128 .BottomMargin = 0; // Code 128 image orientation, 0, 90, 180, 270 degrees supported. code128 .DisplayText = true; code128 .TextFont = new Font("Arial", 10f, FontStyle.Regular);
Instead of specifying a data type in the CAST expression, you can specify a SQL2 domain. Domains are specific collections of legal data values that can be defined in the database under the SQL2 standard. They are fully described in 11 because of the role they play in SQL data integrity. Note that you can also generate a NULL value of the appropriate data type for use in SQL expressions using the CAST expression. The most common uses for the CAST expression are: I To convert data from within a database table where the column is defined with the wrong data type. For example, when a column is defined as a character string, but you know it actually contains numbers (that is, strings of digits) or dates (strings that can be interpreted as a month/day/year). I To convert data from data types supported by the DBMS that are not supported by a host programming language. For example, most host programming languages do not have explicit date and time data types and require that date/time values be converted into character strings for handling by a program. I To eliminate differences between data types in two different tables. For example, if an order date is stored in one table as DATE data, but a product availability date is stored in a different table as a character string, you can still compare the columns from the two tables by CASTing one of the columns into the data type of the other. Similarly, if you want to combine data from two different tables with a UNION operation, their columns must have identical data types. You can achieve this by CASTing the columns of one of the tables. c# code 128 Packages matching Tags:"Code128" - NuGet Gallery
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What also supported is Code 128 generation in Microsoft IIS. For more information, see How to print barcode in Visual C# with ASP.NET web control. With this .NET barcode generator class library dll, developers will find it so easy to paint and generate a Code 128 barcode image in Windows Forms applications. Note the following: The column list is optional, but if included must be enclosed in a pair of parentheses. The CASE Expression (SQL2) The SQL2 CASE expression provides for limited decision making within SQL expressions. Its basic structure, shown in Figure 9-10, is similar to the IF THEN ELSE statement found in many programming languages. When the DBMS encounters a CASE expression, it evaluates the first search condition, and if it is TRUE, then the value of the CASE expression Figure 9-10. code 128 rendering c# C# : Generating Code 128 Barcode (width of bars/spaces) - Stack ...
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C# Code 128 Generator Control to generate Code 128 in C# class, ASP.NET, Windows Forms. Download Free Trial Package | Include developer guide ... is the value of the first result expression. If the result of the first search condition is not TRUE, the DBMS proceeds to the second search condition and checks whether it is TRUE. If so, the value of the CASE expression is the value of the second result expression, and so on. Here is a simple example of the use of the CASE expression. Suppose you want to do an A/B/C analysis of the customers from the sample database according to their credit limits. The A customers are the ones with credit limits over $60,000, the B customers are those with limits over $30,000 and the C customers are the others. Using SQL1, you would have to retrieve customer names and credit limits from the database and then rely on an application program to look at the credit limit values and assign an A, B, or C rating. Using a SQL2 CASE expression, you can have the DBMS do the work for you: If the column list is omitted, the nested SELECT must provide a value for every column in the table, in the same order as the columns are de ned in the table. It is always a good idea to provide the column list, because leaving it out makes the INSERT statement dependent on the table s de nition, which means that if the column order is changed, or a new column is added to the table (even an optional one), the INSERT statement will most likely fail the next time it is run. If the column list is provided, the nested SELECT must provide a value for each column in the column list and in the same order. In other words, the column list and the columns in the result set of the SELECT must have a one-to-one correspondence. Any column that is omitted from the column list will be set to a null value, provided nulls are allowed for that column. The keyword NULL may be used in the SELECT to specify a null value for any column. As an example, let us assume that all movies are now available in French. The MOVIE_LANGUAGE table has French language rows for only some movies, and you want to add the missing ones. This is a deliberately complicated example intended to show just how sophisticated the nested SELECT statement can be. Here is the INSERT statement that will handle the task: SELECT COMPANY, CASE WHEN CREDIT_LIMIT > 60000 THEN 'A' WHEN CREDIT_LIMIT > 30000 THEN 'B' ELSE 'C' FROM CUSTOMERS code 128 c# font Code 128 C# Control - Code 128 barcode generator with free C# ...
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