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SAP hana Visualize Plan show Create Temp Index

Dear Expert,

Good morning, I would like to get some advice on Performance topic.

Our developers usually use SELECT JOIN with more then 5 tables, show some sample code : when I use ST05 to check the SQL trace, it show me :screen shot attached.

Sample code

SELECT a~matnr,         "Material Number
           a~werks,         "Plant
           e~lgort,         "Storage Location
           a~prctr,         "Profit Center
           a~lgfsb,         "Default storage location for external procurement
           b~prdha,         "Product hierarchy
           b~bismt,         "Old Material Number
           b~meins,         "Base Unit of Measure
           c~maktx,         "Material Description
           d~vprsv,         "Price Control Indicator
           d~verpr,         "Moving Average Price/Periodic Unit Price
           d~stprs,         "Standard Price
           d~peinh,         "Price Unit
           e~labst,         "Valuated Unrestricted Used Stock
           d~bklas,         "Valuation Class
           d~vmver,         "Moving Avergae Price/Periodic Unit Price in Previous Period
           d~vmstp,         "Standard Price in previous period
           f~gjahr,         "Fiscal Year
           f~gsv01,         "Total Consumption
           f~gsv02,         "Total Consumption
           f~gsv03,         "Total Consumption
           f~gsv04,         "Total Consumption
           f~gsv05,         "Total Consumption
           f~gsv06,         "Total Consumption
           f~gsv07,         "Total Consumption
           f~gsv08,         "Total Consumption
           f~gsv09,         "Total Consumption
           f~gsv10,         "Total Consumption
           f~gsv11,         "Total Consumption
           f~gsv12          "Total Consumption
      FROM marc AS a
      INNER JOIN mara AS b ON a~matnr EQ b~matnr
      INNER JOIN fins_rr_wrk_buk ON a~werks EQ fins_rr_wrk_buk~werks
      INNER JOIN makt AS c ON c~matnr EQ b~matnr
      INNER JOIN v_mbew_md AS d ON d~matnr EQ a~matnr
      INNER JOIN mard AS e ON e~matnr EQ a~matnr AND
                         e~werks EQ fins_rr_wrk_buk~werks
      INNER JOIN t001k ON d~bwkey EQ t001k~bwkey
      INNER JOIN mver AS f ON f~matnr EQ a~matnr
      INTO TABLE @lt_data
      WHERE b~mtart IN @i_mtart
      AND fins_rr_wrk_buk~bukrs EQ @i_bukrs
      AND a~matnr IN @i_matnr
      AND a~lvorm EQ ''
      AND f~gjahr IN (@l_year, @l_prev)
      AND c~spras EQ @sy-langu
      ORDER BY a~matnr, a~werks, e~lgort.

Screen shot of Execution Plan at ST05

Operation was showing JOIN (which not INDEX JOIN)

Screen shot Graphical from HAHA Studio

I would like to know all this Temporary Index, is it acceptable ?

For SELECT JOIN which more the 5 tables, is it acceptable ?

Please further assist me.

Many appreciate.

Best Regards,


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