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Delphi Data Access Components

Delphi Data Access Components is a line of DB connectivity solutions for such databases as: Oracle, Microsoft SQL Server, MySQL, InterBase, Firebird, PostgreSQL, SQLite, Microsoft Access, DB2, Sybase Advantage Database Server, Sybase Adaptive Server Enterprise, and other databases (using ODBC provider).

http://www.devart.com/dac.html

Delphi Data Access Components

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75 results found

  1. dbMonitor

    1. Please add another tab next to the tabs "SQL, Parameters, Error, CallStack" e.g. "Final SQL" in which we would be able to see SQL query with real parameter values instead of parameter placeholders ":Param1, Param2,...".

    2. Please show real value of MEMO fields (TEXT - PostgreSQL, BLOB SUBTYPE 1 - Firebird, etc.) in parameters tab instead something like <BLOB:xxx>.

    For real BLOB types (BLOB SUBTYPE 0 or BINARY) you can leave <BLOB:xxx>

    TUniquery

    Please add some property (like FinalSQL) but with real parameter values instead of parameter placeholders ":Param1, :Param2,...", so we can see actual SQL when debugging from Delphi…

    3 votes
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    0 comments  ·  UniDAC  ·  Admin →
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  2. DO $block$ begin :c:=100; end; $block$

    This works for Oracle, but not for PostgreSQL

    3 votes
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    0 comments  ·  UniDAC  ·  Admin →
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  3. Please implement the support of AutoCreateMode in your components.

    Further description:
    http://docwiki.embarcadero.com/Libraries/Rio/en/Data.DB.TFieldOptions.AutoCreateMode

    With this option it's possible to create calculated fields in design time and all other fields will be added automaticly on runtime.

    3 votes
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    0 comments  ·  UniDAC  ·  Admin →
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  4. Manually parse SQL for MBCS strings.
    Latest UniDac MBCS specification is not full compatible with BDE/DBX(Delphi Ansi version).
    and issue parse exception by mistake and macro function character at not ParamCheck.
    and this exception is difficult to understand the cause.
    (I have send details to support already)

    Please add the following property/Event.

    1. SkipParseSQL property
    2. OnBeforeParseSQL
    3. OnSQLParseError
    3 votes
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    0 comments  ·  UniDAC  ·  Admin →
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  5. Implement support for Raspberry Pi and arm general Iot using lazarus. Im a lazarus user and rapsberry work exceleent with my app. Just need a stable dataaccess like unidac on raspberry pi.

    3 votes
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  6. The only way to access a Filemaker Server database is via ODBC, which is not supported in iOS. There is a large installation of Filemaker databases out there, backed by Apple, and with the increasing market share of Mac, iPad and iPhone, it will likely gain in popularity.

    3 votes
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    1 comment  ·  UniDAC  ·  Admin →
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  7. Connection Pooling should work in multi threaded environments with transactions.
    I think the current design may be flawed. I think there should be a special connectionpool with which connections can be linked. in a multi-threaded environment, you want the thread to grab a connection, use it, and release it. at the moment, if you want to start a transaction, with connection pooling enabled, the current connection is basically blocked as it does not do anything smart in tracking the underlying connection to a thread. I currenltly get an error - cannot start transaction when one is already active... so I…

    6 votes
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    0 comments  ·  UniDAC  ·  Admin →
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  8. Since the latest delphi has resolved all the major bugs of TMonitor and it's stable it would be nice to use it instead of T(RTL)CriticalSection.

    It's way more faster locking so more performance gains of UniDac and our apps.

    You case you Defines to change the lock mechanism for older versions of Delphi.

    3 votes
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    0 comments  ·  UniDAC  ·  Admin →
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  9. Please add the function dayoftheyear to the list of unified sql functions

    3 votes
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  10. For remote server with REST we need a FAST Json result from Db driver, direct, avoiding dataset marshalling.

    3 votes
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    1 comment  ·  UniDAC  ·  Admin →
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  11. Looking in the "UniDAC\Demos\ThirdParty\FastReport\" folder, I found a component: "TfrxUniDACComponents", which integrates Unidac with FastReport for Delphi, but I didn't find it for Lazarus. I'm using Lazarus 2.2.6 and would like to know if it's possible to develop this component for Lazarus as well.

    3 votes
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  12. dbMonitor, which is a great feature, shows any string values as <BLOB:19> instead of the actual data in that field. This might only apply to postgresql

    3 votes
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  13. Currently it is not possible to use UniDAC to compact an existing Jet database.

    2 votes
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    0 comments  ·  UniDAC  ·  Admin →
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  14. For Firebird the possible value for RowsPerBatch depends on the number of rows in the table because the maximal length of an SQL statement is 64KB.
    For RowsPerBatch=0, UniDac should calculate the maximal possible value itself.

    2 votes
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    0 comments  ·  UniDAC  ·  Admin →
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  15. Add futures (properties) AutostartTransacttion to UniQuery, UniSQL, UniStoredProc

    1 vote
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  16. 1 vote
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  17. У компонентов FIBPlus есть замечательная фича.
    Когда в базе (Firebird) меняешь размер поля, то не нужно корректировать этот размер у DataSet компоненты. Компонента (TpFibDataSet) сама подтянет новый размер поля в дизайнтайме.
    Было бы здорово, чтобы компонента TUniQuery тоже такое умела.
    Вообще, желательно, чтобы подгружался не только размер поля, а и другие параметры и не только текстового.
    Я работаю с UniDAC примерно с 2012 г и удивлён, что этой фичи ещё нет.
    У FIBPlus много вкусного, жаль, что они больше не развиваются.

    Под словом "подтягивать" я имел ввиду брать из базы, из системных таблиц читать разные параметры поля и применять их…

    1 vote
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  18. Я знаю, что у TUniQuery есть возможность сгенерировать доп. запрос на основе SelectSQL.
    Но это неочевидно, в справке нет. Нет готовых методов.
    Приходится открывать предварительно сам запрос, что есть не совсем правильно.

    [code] UniQuery1.Open;
    UniQuery1.SQLUpdate.Text := TDBAccessUtils.SQLGenerator(UniQuery1).GenerateSQL(TDAParamsInfo.Create(TDAParamInfo) , _stUpdate, true);
    UniQuery1.SQLRefresh.Text := TDBAccessUtils.SQLGenerator(UniQuery1).GenerateSQL(TDAParamsInfo.Create(TDAParamInfo) , _stRefresh, true);
    [/code]
    да и без UniQuery1.Open вываливается AV :(

    Было бы здорово, если бы было что-то вроде:
    UniQuery1.GelerateAllSQLs.
    UniQuery1.GelerateInsertSQL;
    UniQuery1.GelerateUpdateSQL;
    UniQuery1.GelerateDeleteSQL;
    и т.д.
    и без обязательного открытия набора данных.

    1 vote
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  19. The ODBC-provider for ADS has some restrictions, for example can't access encrypted free tables).
    Also FireDac has already an native provider for ADS.

    1 vote
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  20. It will not take over the identical field names of a view. If multiple fields have the same name located in different sub-tables of this view.

    1 vote
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