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POTClientDataSet and big insert
 

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    <p>In my application I use TADOQuery with select (MSSQL) and linked with it TClientDataSet. I have to insert about million records and ApplyUpdates.</p> <p>So what I see in the SQL Server Profiler? I see that for <strong>each</strong> inserted row we have 3 queries: sp_prepare of insert script, sp_execute it with some values and sp_unprepare.</p> <p>I want just to prepare sql <strong>once</strong> for all of the records before insert and unprepare it after. How can I do it?</p> <p><strong>Added after</strong>:</p> <p>In the query I have a script for the stored procedure execution:</p> <pre><code>tmpQuery := DefineQuery(FConnection, [ 'exec up_getOperatorDataSet ', ' @tablename = :tablename, ', ' @operator = :operator, ', ' @forappend = :forappend, ', ' @withlinksonly = :withlinksonly, ', ' @ids = :ids ' ], [ Param(ftString, sTableName), Param(ftInteger, FOperatorId), Param(ftBoolean, opForAppendOnly in OpenParams), Param(ftBoolean, opOnlyWithModelLinks in OpenParams), Param(ftString, sIds) ], Result); </code></pre> <p>It selects all of the fields from table <em>sTableName</em> with some parameters.</p> <p>Example of inserting from profiler:</p> <p>step 1:</p> <pre><code>declare @p1 int set @p1=486 exec sp_prepare @p1 output,N'@P1 int,@P2 int,@P3 datetime,@P4 int,@P5 int,@P6 int,@P7 int,@P8 int,@P9 varchar(128),@P10 bit,@P11 numeric(19,4),@P12 smallint,@P13 smallint,@P14 smallint,@P15 smallint',N'insert into parser_prices (operator_id, request_id, date, nights, model_hotel_id, model_meal_id, model_room_id, model_htplace_id, spo, hotelstop, price, frout_econom, frout_business, frback_econom, frback_business) values (@P1, @P2, @P3, @P4, @P5, @P6, @P7, @P8, @P9, @P10, @P11, @P12, @P13, @P14, @P15) ',1 select @p1 </code></pre> <p>step 2:</p> <pre><code>exec sp_execute 486,21,2000450,'2009-12-04 00:00:00',14,2118,22,-9555,18,'2009-10.MSK.Bali.13.10.09-27.03.10',0,15530.0000,3,3,3,3 </code></pre> <p>step 3:</p> <pre><code>exec sp_unprepare 486 </code></pre> <p>and it is <strong>for all</strong> of the new rows.</p>
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    1. COCan we see an example of the script? You should be able to parameterize it, in which case you can preapre it up front and then just change the parameters each time before re-executing.
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    2. COSome details added.
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