Yes, I did notice that subsequent times the exact same query performed better. The problem is that in our app, a teacher is presented with a list of students in her class. She wants to run a report on each one. Clicking on a student executes the query below but with a different student id.
It takes over a minute each time she selects a new student. Is this because the query is not identical each time? It really does me no good that subsequent times the query runs better, because the teacher doesn't need to run the same student more than once. Suggestions? -----Original Message----- From: Nathan Maves [mailto:[EMAIL PROTECTED] Sent: Monday, May 23, 2005 10:59 AM To: ibatis-user-java@incubator.apache.org Subject: Re: Query performs differently in SQL Query Analyzer 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 > > ********************************************************************** > ****** > This email may contain confidential material. > If you were not an intended recipient, > Please notify the sender and delete all copies. > We may monitor email to and from our network. > ********************************************************************** > ****** > **************************************************************************** This email may contain confidential material. 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