ACCESS VBA SQL 降序

在ACCESS VBA中使用SQL语句进行排序时，可以使用关键字DESC来指定降序排列。例如，以下SQL语句将按照Salary字段从高到低的顺序返回Employee表中的记录：

SELECT * FROM Employee ORDER BY Salary DESC;

在上述SQL语句中，ORDER BY Salary DESC表示按照Salary字段降序排序。DESC是DESCENDING的缩写，表示降序排序。

相关问题

access vba sql like

好的，我明白了。关于Access VBA中的SQL LIKE语句，它可以在查询中用于模糊匹配字符串。以下是一个示例代码，演示如何使用SQL LIKE语句：

Dim strSQL As String
Dim strSearch As String

strSearch = "abc" ' 要搜索的字符串

' 构建SQL语句
strSQL = "SELECT * FROM TableName WHERE ColumnName LIKE '*" & strSearch & "*'"

' 执行查询
DoCmd.RunSQL strSQL

在上面的示例中，`TableName` 是要查询的表名，`ColumnName` 是要搜索的列名，`strSearch` 是要搜索的字符串。`"*"` 是通配符，表示任意字符。

你可以根据需要调整表名、列名和搜索字符串来适应你的实际情况。

excel vba sql

Excel VBA SQL refers to the use of Structured Query Language (SQL) in Microsoft Excel's Visual Basic for Applications (VBA) programming language.

With Excel VBA SQL, developers can write SQL queries in their VBA code to interact with a database and retrieve or manipulate data. This allows users to perform complex data analysis and automate data-related tasks in Excel.

Excel VBA SQL can be used with various database management systems, such as Microsoft Access, SQL Server, Oracle, and MySQL. It involves connecting to the database, writing SQL statements to query or update data, and then processing the results in Excel.

Example:

Here is an example of Excel VBA SQL code that retrieves data from an Access database:

Sub GetCustomers()
Dim cn As Object
Dim rs As Object
Dim strSQL As String

Set cn = CreateObject("ADODB.Connection")
Set rs = CreateObject("ADODB.Recordset")

cn.Open "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Customers.accdb;Persist Security Info=False;"

strSQL = "SELECT * FROM Customers WHERE Country='USA'"

rs.Open strSQL, cn

'Process the results
While Not rs.EOF
Debug.Print rs("CustomerName")
rs.MoveNext
Wend

rs.Close
cn.Close
End Sub

This code connects to an Access database and retrieves all customers with a Country value of 'USA'. It then prints the customer names to the Immediate window in the VBA editor.