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From Nathan Maves <Nathan.Ma...@Sun.COM>
Subject Re: Query performs differently in SQL Query Analyzer
Date Mon, 23 May 2005 16:58:37 GMT
I think this needs a FAQ :)

This has been cover quite a few times.

iBatis is doing way more then just running sql.  Make sure that to  
truly test the performance of iBatis that you run the query multiple  
times.  The initial run is creating many object and sets everything  
up.  Check the speed of the second and third runs to see more  
accurate results.

Nathan

On May 23, 2005, at 10:13 AM, Barnett, Brian W. wrote:

> I have a query that returns in 3 or 4 seconds when I run it in  
> Microsoft SQL
> Query Analyzer but takes over a minute to return when run through  
> iBATIS.
> Can anyone give me some clues as to what I should check?
>
> Here is the SQL Map stuff:
>
>     <resultMap id="student_profile_combined_result"
> class="java.util.HashMap">
>         <result property="abbrev" column="abbrev"
> nullValue="null_string"/>
>         <result property="session" column="session_name"
> nullValue="null_string"/>
>         <result property="display" column="display"
> nullValue="null_string"/>
>         <result property="dateTested" column="dateTested"
> nullValue="null_string"/>
>         <result property="proficiencyLevel"
> column="proficiency_level" nullValue="null_string"/>
>         <result property="theTestScore" column="the_test_score"
> nullValue="-999"/>
>         <result property="schoolScoreAvg" column="schoolScoreAvg"
> nullValue="-999"/>
>         <result property="distScoreAvg" column="distScoreAvg"
> nullValue="-999"/>
>         <result property="gradeLevelId" column="grade_level_id"
> nullValue="-999"/>
>         <result property="schoolName" column="school_name"
> nullValue="null_string"/>
>         <result property="assessmentId" column="assessment_id"
> nullValue="-999"/>
>         <result property="schoolRawAvg" column="schoolRawAvg"
> nullValue="-999"/>
>         <result property="distRawAvg" column="distRawAvg"
> nullValue="-999"/>
>         <result property="lowcut" column="lowcut" nullValue="-999"/>
>         <result property="highcut" column="highcut"
> nullValue="-999"/>
>         <result property="prof" column="prof" nullValue="-999"/>
>         <result property="ppId" column="pp_id" nullValue="-999"/>
>         <result property="theRawPoints" column="the_raw_points"
> nullValue="-999"/>
>         <result property="scoreMethodId" column="score_method_id"
> nullValue="-999"/>
>         <result property="aboveStandard" column="above_standard"
> nullValue="-999"/>
>         <result property="schoolAboveStandard"
> column="school_above_standard" nullValue="-999"/>
>         <result property="districtAboveStandard"
> column="district_above_standard" nullValue="-999"/>
>         <result property="sessionId" column="session_id"
> nullValue="-999"/>
>         <result property="maxScore" column="maxScore"
> nullValue="-999"/>
>         <result property="minScore" column="minScore"
> nullValue="-999"/>
>     </resultMap>
>
>     <select id="getStudentProfileDataCombined"
> resultMap="student_profile_combined_result"
> parameterClass="java.util.HashMap">
>         $sql$
>     </select>
>
> Here is the query:
>
> SELECT a.abbrev, tsts.session_name, tsts.session_id, y.display,
> ts.dateTested, ppl.proficiency_level, ts.test_score AS the_test_score,
>  avs.schoolScoreAvg, avd.distScoreAvg, gr.grade_level_id,  
> sc.school_name,
> a.assessment_id, avs.schoolRawAvg, avs.school_above_standard,
>  avd.distRawAvg, avd.district_above_standard, pp.lowcut, pp.highcut,
> pp.prof, pp.pp_id, ts.test_raw_points AS the_raw_points,  
> a.score_method_id,
>  ppl.above_standard, avd.maxScore, avd.minScore
> FROM assessment a, test_score ts, school sc, grade_level gr,
> d_avg_test_score avd, s_avg_test_score avs,  
> proficiency_profile_levels ppl,
>  view_pp pp, test_session tsts, test t, school_year y
> WHERE a.assessment_id = ts.assessment_id and ts.sch_student_id =  
> 13120 AND
> t.session_id = tsts.session_id AND y.year_id = t.year_id AND
>  a.assessment_id = t.assessment_id  AND ts.test_id = t.test_id   AND
> avs.assessment_id = ts.assessment_id AND avs.school_id =  
> ts.school_id  AND
>  avs.test_id = ts.test_id AND avs.session_id = t.session_id AND  
> avs.year_id
> = t.year_id  AND avs.grade_level_id = ts.grade_level_id AND
>  avd.assessment_id = ts.assessment_id  AND avd.district_id =  
> ts.district_id
> AND avd.grade_level_id = ts.grade_level_id  AND
>  avd.test_id = ts.test_id AND avd.session_id = t.session_id AND  
> avd.year_id
> = t.year_id  AND sc.school_id = ts.school_id AND
>  gr.grade_level_id = ts.grade_level_id  AND  
> ppl.proficiency_profile_level_id
> = pp.ppl_id  AND pp.a_id = a.assessment_id  AND
>  pp.pp_id = a.primary_prof_profile_id  AND ts.grade_level_id =  
> pp.gl_id AND
> pp.rce_id IS NULL  AND t.session_id = pp.s_id  AND
>  ts.test_score BETWEEN pp.lowcut AND pp.highcut
> ORDER BY ts.dateTested DESC
>
> TIA,
> Brian Barnett
>
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