free barcode generator source code in vb.net SQL APIs in Software

Drawer Code 128A in Software SQL APIs

SQL APIs
ANSI/AIM Code 128 Scanner In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Make Code 128 Code Set B In None
Using Barcode creation for Software Control to generate, create Code 128 Code Set C image in Software applications.
main() { LOGINREC char short float *loginrec; repname[16]; repquota; repsales; /* data structure for login information */ /* data structure for connection */ /* retrieved city for the office */ /* retrieved employee number of mgr */ /* retrieved sales for office */ DBPROCESS *dbproc;
Code 128B Reader In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
Code 128B Printer In Visual C#.NET
Using Barcode printer for .NET framework Control to generate, create Code 128 Code Set B image in .NET framework applications.
/* Open a connection to SQL Server */ loginrec = dblogin(); DBSETLUSER(loginrec, scott ); DBSETLPWD (loginrec, tiger ); dbproc = dbopen(loginrec, ); /* Pass query to dblib and ask SQL Server to execute it */ dbcmd(dbproc, select name, quota, sales from salesreps ); dbcmd(dbproc, where sales > quota order by name ); dbsqlexec(dbproc); /* Get first statement in the batch */ dbresults(dbproc); /* Bind each column to a variable in this program */ dbbind(dbproc, 1, NTBSTRINGBIND, 16, &repname); dbbind(dbproc, 2, FLT4BIND, dbbind(dbproc, 3, FLT4BIND, 0, &repquota); 0, &repsales);
Drawing Code 128C In Visual Studio .NET
Using Barcode creator for ASP.NET Control to generate, create USS Code 128 image in ASP.NET applications.
Generating Code128 In .NET
Using Barcode printer for VS .NET Control to generate, create Code 128A image in .NET framework applications.
/* Loop retrieving rows of query results */ while (status = dbnextrow(dbproc) == SUCCEED) { /* Print data for this salesperson */ printf( Name: %s\n , repname); repsales); printf( Quota: %f\n\n , repquota); printf( Sales: %f\n , } /* Check for errors and close connection */ if (status == FAIL) { printf( SQL error.\n ); dbexit(dbproc); exit(); }
Code 128C Generator In Visual Basic .NET
Using Barcode generation for VS .NET Control to generate, create Code128 image in .NET framework applications.
EAN / UCC - 13 Printer In None
Using Barcode drawer for Software Control to generate, create GS1 128 image in Software applications.
PROGRAMMING WITH SQL
UPCA Creation In None
Using Barcode drawer for Software Control to generate, create UCC - 12 image in Software applications.
GS1 - 13 Creator In None
Using Barcode printer for Software Control to generate, create GS1 - 13 image in Software applications.
Figure 19-7.
Encoding Code 128C In None
Using Barcode generator for Software Control to generate, create Code 128A image in Software applications.
Paint Bar Code In None
Using Barcode creation for Software Control to generate, create barcode image in Software applications.
Retrieving query results using dblib
Draw EAN-8 Supplement 5 Add-On In None
Using Barcode creation for Software Control to generate, create EAN8 image in Software applications.
Data Matrix Creator In Objective-C
Using Barcode generator for iPhone Control to generate, create Data Matrix 2d barcode image in iPhone applications.
SQL: The Complete Reference
Scan UPC A In .NET
Using Barcode decoder for .NET Control to read, scan read, scan image in VS .NET applications.
Code-128 Generation In Objective-C
Using Barcode creation for iPhone Control to generate, create USS Code 128 image in iPhone applications.
5. When no more rows of query results are available, the dbnextrow() call returns the value NO_MORE_ROWS. If more statements were in the statement batch following the SELECT statement, the program could call dbresults() to advance to the next statement. Two of the dblib calls in Figure 19-7, dbbind() and dbnextrow(), support processing of the SQL Server query results. The dbbind() call sets up a one-to-one correspondence between each column of query results and the program variable that is to receive the retrieved data. This process is called binding the column. In the figure, the first column (NAME) is bound to a 16-byte character array and will be returned as a NULL-terminated string. The second and third columns, QUOTA and SALES, are both bound to floating point numbers. It is the programmer s responsibility to make sure that the data type of each column of query results is compatible with the data type of the program variable to which it is bound. Once again, it is useful to compare the SQL Server query processing in Figure 19-7 with the embedded SQL queries in Figure 17-20 and Figure 17-23: I Embedded SQL has two different query-processing techniques one for single-row queries (singleton SELECT) and one for multirow queries (cursors). The dblib API uses a single technique, regardless of the number of rows of query results. I To specify the query, embedded SQL replaces the interactive SELECT statement with the singleton SELECT statement or the DECLARE CURSOR statement. With SQL Server, the SELECT statement sent by the program is identical to the interactive SELECT statement for the query. I With embedded SQL, the host variables that receive the query results are named in the INTO clause of the singleton SELECT or the FETCH statement. With SQL Server, the variables to receive query results are specified in the dbbind() calls. I With embedded SQL, row-by-row access to query results is provided by special-purpose embedded SQL statements (OPEN, FETCH, and CLOSE). With SQL Server, access to query results is through dblib function calls (dbresults() and dbnextrow()), which keep the SQL language itself more streamlined. Because of its relative simplicity and its similarity to the interactive SQL interface, many programmers find the SQL Server interface easier to use for query processing than the embedded SQL interface.
Encoding Barcode In .NET
Using Barcode encoder for VS .NET Control to generate, create bar code image in .NET framework applications.
1D Barcode Creator In Java
Using Barcode generator for Java Control to generate, create Linear 1D Barcode image in Java applications.
Retrieving NULL Values
Code 39 Maker In None
Using Barcode drawer for Font Control to generate, create Code 39 Extended image in Font applications.
DataMatrix Drawer In None
Using Barcode creator for Font Control to generate, create Data Matrix image in Font applications.
The dbnextrow() and dbbind() calls shown in Figure 19-7 provide a simple way to retrieve query results, but they do not support NULL values. When a row retrieved by
19:
Copyright © OnBarcode.com . All rights reserved.