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This article mainly explains the "what is the use of ADO Parameter sentences", the content of the explanation is simple and clear, easy to learn and understand, now please follow the editor's ideas slowly in depth, together to study and learn "what is the use of ADO Parameter sentences"!

The ADO Parameter object provides information about a single parameter used in a stored procedure or query, and developers, project managers, and testers alike should constantly adapt to this trend, and I think ADO Parameter will only make our work easier and easier.

The Parameter object is added to the Parameters collection when it is created. The Parameters collection is associated with a specific Command object, and the Command object uses this collection to pass parameters inside and outside the stored procedure and query.

Parameters are used to create parameterized commands. These commands (after they have been defined and stored) use parameters to change some of the details of the command before it is executed. For example, an ADO Parameter statement can use a parameter to define the matching condition of the WHERE clause, and another parameter to define the name of the column of the SORT BY clause.

There are four types of parameters: input parameter, output parameter, input/output parameter, and return parameter.

DO objects have two types of properties: built-in properties and dynamic properties. Built-in properties are those that are implemented in ADO and immediately available to any new object, using the MyObject.Property syntax. They do not appear as Property objects in the Properties collection of objects, so although you can change their values, you cannot change their properties.

The ADO Parameter object represents the dynamic characteristics of ADO Parameter, which are defined by provider. Each provider that talks to ADO has a different way of interacting with ADO Parameter. Therefore, ADO needs to store information about provider in some way. The solution is for provider to provide ADO with specific information (dynamic properties).

ADO Parameter stores each provider property in a Property object, and the Property object is stored in the Properties collection accordingly. This collection is assigned to a Command object, Connection object, Field object, or Recordset object.

For example, a property assigned to a provider might indicate whether the Recordset object supports transactions or updates. These additional properties will appear as Property objects in the Properties collection of the Recordset object.

Property description Attributes returns the properties of a Property object Name setting or returns the name of a Property object Type returns the type Value setting of Property or returns the value of a Property object thank you for reading, the above is the content of "what is the use of the ADO Parameter statement", after the study of this article, I believe you have a deeper understanding of the use of the ADO Parameter statement, the specific use of the situation also needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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