Αποτελέσματα Αναζήτησης
When you want to retrieve data from a database, you ask for the data by using Structured Query Language, or SQL. SQL is a computer language that closely resembles English, but that database programs understand. Every query that you run uses SQL behind the scenes.
- SELECT statement (Microsoft Access SQL)
To perform this operation, the Microsoft Jet database engine...
- Access Sql: Where Clause
In a SQL statement, the WHERE clause specifies criteria that...
- Microsoft Access SQL reference
Applies to: Access 2013, Office 2013. Overview of the Access...
- Access Sql: Select Clause
You use a SELECT clause to specify the names of the fields...
- Create a Simple Select Query
Access. Queries. Simple queries. Create a simple select...
- SELECT statement (Microsoft Access SQL)
22 Μαρ 2022 · To perform this operation, the Microsoft Jet database engine searches the specified table or tables, extracts the chosen columns, selects rows that meet the criterion, and sorts or groups the resulting rows into the order specified.
In a SQL statement, the WHERE clause specifies criteria that field values must meet for the records that contain the values to be included in the query results. For an overview of Access SQL, see the article Access SQL: basic concepts, vocabulary, and syntax.
21 Σεπ 2021 · Applies to: Access 2013, Office 2013. Overview of the Access SQL reference; Data definition language (DDL) Data manipulation language; Windows registry settings for external data sources
You use a SELECT clause to specify the names of the fields that have data that you want to use in a query. You can also use expressions instead of or in addition to fields. You can even use another SELECT statement as a field — this is referred to as a subquery.
Access. Queries. Simple queries. Create a simple select query. Applies To. When you want to select specific data from one or more sources, you can use a select query. A select query helps you retrieve only the data that you want, and also helps you combine data from several data sources.
A query criterion is an expression that Access compares to query field values to determine whether to include the record that contains each value. For example, = "Chicago" is an expression that Access can compare to values in a text field in a query.