You can use the Expand Query option to provide an OData-style expression to include data from related tables. You can find this option under Advanced parameters.For example, the Account table has a relationship
Of course, you may not always want to select all columns from a database table. Using the select method, you can specify a custom select clause for the query:1$users = DB::table('users')->select('name', 'email as user_email')->get();...
Some common guidelines for improving the query performance can be found in Optimize performance using FetchXml For non-interactive applications the common ways to reduce the database load are: When using ExecuteMultiple (or another batching mechanism), reduce the size of the batch If the application...
These values are usually the plural name of the table, but they can be different. Use the results of this request to confirm you're using the correctEntitySetresource name. For example, start with theaccountsEntitySet resource to retrieve data from theaccount entity type. ...
前言FetchXml 是一种基于 XML 的专有查询语言,用于从 Dataverse 检索数据。 添加引用 Microsoft.CrmSdk.CoreAssemblies System.Configuration 检索数据(Retrieve data) RetrieveMultiple using
Additionally, this library can export data from the SQLite database back into GTFS (csv) format. The library also supports importing GTFS-Realtime data into the same database. In order to keep the realtime database fresh, it uses SQLITE REPLACE which makes it very effective. You can use ...
SELECT DISTINCT p FROM Player p, IN (p.teams) AS t WHERE t.city = :cityData retrieved: The players whose teams belong to the specified city. Description: This query is similar to the previous example but adds an input parameter. The AS keyword in the FROM clause is optional. In the ...
Fetch() is the amortized cost of fetching one byte from disk, assuming data is fetched in blocks. Fetch() 是从磁盘中获取一个字节的摊销成本,假设数据是以块为单位获取的。 |G| denotes the cardinality of group G. |G| 是组G的基数
Fetch all data$records = $db->table('mytable')->findAll(); foreach ($records as $record) { var_dump($record['column1']); }Updates$db->table('mytable')->eq('id', 1)->save(['column1' => 'hey']);or$db->table('mytable')->eq('id', 1)->update(['column1' => 'hey...
FROM Player AS p, IN (p.teams) t WHERE t.league.sport = ’soccer’WHERE ClauseThe WHERE clause specifies a conditional expression that limits the values returned by the query. The query returns all corresponding values in the data store for which the conditional expression is TRUE. Although ...