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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. You can use tables and other select queries as data sources for a select query.
If you want to review data from only certain fields in a table, or review data from multiple tables simultaneously or maybe just see the data based on certain criteria, a select query type would be your choice. For more information, see create a simple select query.
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.
27 paź 2023 · The SELECT query is a powerful tool for retrieving data in Access. By specifying the fields and tables you're interested in, and optionally applying conditions to filter your results, you can pull exactly the data you need.
7 lut 2022 · You can use the QueryDef object to define a query. For example, you can: Use the SQL property to set or return the query definition. Use the QueryDef object's Parameters collection to set or return query parameters.
There are five types of queries, each with a unique function and use: (1) select queries, (2) action queries, (3) parameter queries, (4) crosstab queries, and (5) SQL (structured query language) queries. Select query is the most common type of query and the easiest to use.
Select queries are the most common queries and can be used for viewing and a data source for forms, reports, controls, and other queries. The other queries create or change data and are known collectively as Action queries.
