Classe TDmxScroller_sql_Atributos

O atributo pública CustomBufDataset é definida em CreateCustomBufDataset_FieldDefs que é executado em TDmxScroller.CreateData baseado na estrutura do Template passado por GetTemplate.

• NOTA

  • O atributo CustomBufDataset deve ser passado por DataSource.DataSet.

  • Em CreateCustomBufDataset_FieldDefs é criado os campo da propriedade CustomBufDataset se a propriedade (DataSource<>nil) e (DataSource.DataSet <> nil).

  • Se a propriedade DataSource.DataSet = nil então a propriedade CustomBufDataset=nil

  • O método CreateCustomBufDataset_FieldDefs reconhece duas possibilidade para os descendentes de CustomBufDataset quais sejam:

    1. [TBufDataset](https://www.freepascal.org/docs-html/fcl/bufdataset/tbufdataset.html)

    2. TCustomSQLQuery

       • Preciso das propriedades de acesso a banco de dados SQL.

       • O evento OnGetTemplate deve setar as propriedades customizadas de TCustomSQLQuery.

• REFERẼNCIA:

  • [tcustombufdataset](https://www.freepascal.org/daily/packages/fcl-db/bufdataset/tcustombufdataset-14.html)

  • [tcustomsqlquery](https://www.freepascal.org/docs-html/fcl/sqldb/tcustomsqlquery.html)

  • TCustomBufDataset;

  • [TBufDataSet](https://wiki.freepascal.org/How_to_write_in-memory_database_applications_in_Lazarus/FPC#TBufDataSet)

  • [tstatementtype.html](https://www.freepascal.org/docs-html/fcl/sqltypes/tstatementtype.html)

  • [tsqlquery](https://www.freepascal.org/docs-html/fcl/sqldb/tsqlquery.html)

  • [tdatasetstate](https://www.freepascal.org/docs-html/fcl/db/tdatasetstate.html)

  • [How_to_connect_to_a_database_server](https://wiki.freepascal.org/SqlDBHowto#How_to_connect_to_a_database_server.3F)

  • [Example:_reading_data_from_a_table](https://wiki.freepascal.org/SqlDBHowto#Example:_reading_data_from_a_table)

  • [How_to_execute_direct_queries.2Fmake_a_table](https://wiki.freepascal.org/SqlDBHowto#How_to_execute_direct_queries.2Fmake_a_table.3F)

  • [How_to_read_data_from_a_table](https://wiki.freepascal.org/SqlDBHowto#How_to_read_data_from_a_table.3F)

  • [Why_does_TSQLQuery.RecordCount_always_return](https://wiki.freepascal.org/SqlDBHowto#Why_does_TSQLQuery.RecordCount_always_return_10.3F)

  • [Como usar SQLDb no Lazarus](https://wiki.freepascal.org/SqlDBHowto#Lazarus)

  • [Trabalhando com tabelas relacionadas](https://wiki.freepascal.org/MasterDetail)

  • [How_to_change_data_in_a_table](https://wiki.freepascal.org/SqlDBHowto#How_to_change_data_in_a_table.3F)

  • [How_does_SqlDB_send_the_changes_to_the_database_server](https://wiki.freepascal.org/SqlDBHowto#How_does_SqlDB_send_the_changes_to_the_database_server.3F)

  • [How_to_handle_Errors](https://wiki.freepascal.org/SqlDBHowto#How_to_handle_Errors)

  • [How_to_execute_a_query_using_TSQLQuery](https://wiki.freepascal.org/SqlDBHowto#How_to_execute_a_query_using_TSQLQuery.3F)

  • [How_to_use_parameters_in_a_query](https://wiki.freepascal.org/SqlDBHowto#How_to_use_parameters_in_a_query.3F)

  • [Select_query](https://wiki.freepascal.org/SqlDBHowto#Select_query)

  • [Exemplo de SQLQuery com parãmetros](https://wiki.freepascal.org/SqlDBHowto#Example)

  • Troubleshooting:_TSQLConnection_logging

    • [Exemplo de log](https://wiki.freepascal.org/SqlDBHowto#FPC_.28or:_the_manual_way.29)