Even though the data in a database may be unique, the results of any particular query may not be – take our Movies table for example, many different movies can be released the same year. In such cases, SQL provides a convenient way to discard rows that have a duplicate column value by...
; SqlJoinType = InnerJoin; DataItemTableFilter = Quantity = filter(> 10); column(Qty; Quantity) { } } } } } Filtering on columns and filter rows in query object Unlike data item filters, filters on a column or filter row are dynamic and can be overwritten from AL code at runt...
Turning on the MySQL log debug, I was able to get the SQL query issued by FileMaker: UPDATE `dbname`.res_partner SET email='info5@yourcompany.ca' WHERE id=1; The pretty old 32 bits does not support the DBNAME part of the command. If I manually send : UPDATE res_partner SET...
but more than a 50% reduction in the number of reads from the original derived table query. Part of this reduction is based on SQL Server’s use of the PATH xml index in a Merge join. However, this query is still scanning the base table and ...
IEnumerable<string>query=names.Where((n,i)=>i%2==0);// Tom// Harry// Jay 如果在 EF Core 中使用索引筛选,则会引发异常。 SQL LIKE comparisons in EF Core 以下字符串方法转换为 SQL 的 LIKE 运算符: Contains,StartsWith,EndsWith 例如,c.Name.Contains ("abc") 转换为customer.NameLIKE '%abc...
The following SQL query will return all patients and their related procedures found in your HealthLake data store. SELECT patient.id as patientId , PROCEDURE.id as procedureId , CONCAT(name[1].family, ' ', name[1].given[1]) as name , status , category.coding[1].code as categoryCode ...
subquery = ( Book.objects.annotate( _annotated_value=StringAgg( "people__first_name", "," ), ) .filter(pk=OuterRef("pk"),) .exclude(_annotated_value="") .values("id") ) Book.objects.filter(id__in=Subquery(subquery)) SQL query: SELECT "people_book"."id", "people_book"."cat...
对于LINQ to SQL和EF,我们可以在过滤条件中对一个本地集合应用Contains方法,比如: string[] chosenOnes = {"Tom","Jay"}; IQueryable<Customer> query =fromcindataContext.CustomerswherechosenOnes.Contains(c.Name)selectc; 这会映射到SQL的IN操作符,即:WHERE customer.Name IN ("Tom", "Jay")。如果本地...
SQL SELECT<column1>, <column2>, <columnN>FROMFilteredAccountASCRMAF_FilteredAccount; Dynamics 365 will pass a query to the P1 parameter depending on how the report is being filtered. In other words, automatic data pre-filtering acts as a subquery within the existing query....
It is possible to use a different database for this purpose, in which case you should query the database_name.audit_log_filter table instead. See Section 8.4.5.2, “Installing or Uninstalling MySQL Enterprise Audit”, for more information. Within a given session, the value of the read-...