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Question: I want to assign the result of a SQL statement to a multi-line text box, and I want to format the individual fields using the Format function. Can I
Question: I have made a databaseconnection to a dbase IV database in VisualInterdev (with global.asa). In the Data View window I can see the tables, but when I open a
Any time the behavior of your code depends on the Timer function you should take into account the (more or less) remote possibility that your code is executed just before
The following routine quickly check that a string contains a valid GUID. Of course, it doesn’t check that the GUID refers to a valid entity, but at least it lets
Both VB5 and VB6 include a hidden function, named VarPtr, that returns the address of a variable. Many advanced tricks and routines, on VB2TheMax or other site, use this function.
You can use an external JS file to store modular JavaScript code. In addition to being modular, it hides your JavaScript code from novice users. However, it is possible for
Swing is one of the best things that happened to Java GUI developers. At the heart of Swing is the javax.swing.UIManager class (com.sun.java.swing.UIManager for Swing 1.03 and below) that keeps
Stored procedures offer many advantages over dynamic SQL, including improved performance and scalability. The SQL code in a stored procedure is parsed and normalized when you create it. Stored procedures
Dynamic allocation of an exception (as in this example) is not a good idea: class Err{public: Err(const char * description);};void f(){ if (disaster) throw new Err(“failed”); //exception object is dynamically
You can apply STL generic algorithms to a sequence of elements. They are defined in the header file . (on pre-standardized implementations, the name is used instead). Iterators are used
Even macros that look harmless can have detrimental effects. For example: #define twice(x) ((x)+(x)) The macro, twice, is well parenthesized and performs a simple addition operation. Despite its simplicity, there
STL is divided into two major categories: containers and algorithms. Additional components are iterators, function objects, numeric facilities, allocators, and miscellaneous utilities. STL containers are defined in eight different header
As opposed to what most people believe, portability does not guarantee that you can compile and run the same code on every platform without any modifications. Although it is sometimes
Use this code for a generic routine to load a grid from a SQL statement. The example is for Remote Data Objects (RDO) and Sheridan Software Systems’ grid, but it
With VB4 or higher, you can place invisible controls-such as the standard Timer and CommonDialog or UserControls built with VB5 that have their InvisibleAtRuntime property set-directly on an MDIForm. In
When using proper names, you sometimes need to capitalize the first letter of each word. For example, you need to convert “john smith” into “John Smith.” With VB3, you had
I always put the word DAO in front of all references to DAO objects. Here are some examples: Dim Db As DAO.DataBaseDim rs As DAO.Recordset This way, VBA knows what
Question: I have 20 user licenses. During some activities, users are being logged in two or three times. Thus I can hit a max user limit with only 9 actual
Question: I am interested in learning SQL on my own and need to know if there are any tutorials or disks that I can obtain so that I can practice
Question: Can you make a query that returns records based on ORDER BY something? There may be mutiple instances, but I only want the one that is the very first
Question: How do you Establish Referential Integrity between 2 tables so that when a ticket is deleted from the TICKETS table all associated information in the customer5 table will be
Question: I want to find out the top 5%, 10%, and 30% customers based on their purchases. For example, my table looks like:CustomerID Purchase(in $)1 1002 500Up to 100 customers.
Question: I’m still quite new to using SQL and I am designing a database in which I am cataloging resources owned by my company. I am attempting to create a
Question: In SQL Server 6.5, what is the meaning of ‘Error States’? I get this message in a stored procedure.What are these states 1-27. Answer: These numbers provide the context,
Question: How do you select all entries that contain a certain substring? Is there a function like InStr() in VB? Answer: Yes, Check out the charindex function which will Return
Question: After the line break in the code below, the blankspace between the quotes is not recognized. I am merely trying to indent the second line, but I get nothing.
Question: I have fields, in which the datatype is TEXT, and I need to know how I can insert and update data from these fields? Answer: If the size of
Question: I have developed an application that processes about 40,000 records every time it runs. I am using ADO 2.1 and each record is returning about 100 columns of data,
Question: What is the syntax for doing a cascade delete in SQL? For instance, I have a table with a parent record that has child records in other tables, filtering
Question: In all the Foxpro 5.0 documentation, I can’t find an example on how to update the contents of a field ofa table based on another table. For example, table


