Alternative way for double inner join statement

SELECT SINGLE ALNUM INTO P_ITAB-ALNUM_AL FROM MAEX
         JOIN MARC ON MARCMATNR = MAEXMATNR
         JOIN T001W ON T001WWERKS = MARCWERKS
             WHERE MAEX~MATNR = P_VBPLP-MATNR
             AND    MARC~WERKS = T_VBDPL-WERKS
             AND    MAEXALAND = T001WLAND1
             AND    MAEX~GEGRU = 'DE'.
can any one suugest the best way to modify the above statement to improve the performence.
Thanks,
khasim.

Hi,
SELECT SINGLE ALNUM INTO P_ITAB-ALNUM_AL FROM MAEX
JOIN MARC ON MAEX~MATNR = MARC~MATNR
JOIN T001W ON MAEX~ALAND = T001W~LAND1
WHERE MAEX~MATNR = P_VBPLP-MATNR
AND MAEX~GEGRU = 'DE'.
AND MARC~WERKS = T_VBDPL-WERKS
AND T001W-WERKS = T_VBDPL-WERKS.
I have made the WHERE clause free from the comparison of two table fields and changed the second JOIN. The selection criteria, however is same as the SELECT query provided by you.
Try this query and positively let me know about its performance.
Regards,
Jayesh

Similar Messages

Alternative for double inner join

SELECT SINGLE ALNUM INTO P_ITAB-ALNUM_AL FROM MAEX
         JOIN MARC ON MARCMATNR = MAEXMATNR
         JOIN T001W ON T001WWERKS = MARCWERKS
             WHERE MAEX~MATNR = P_VBPLP-MATNR
             AND    MARC~WERKS = T_VBDPL-WERKS
             AND    MAEXALAND = T001WLAND1
             AND    MAEX~GEGRU = 'DE'.
Can anyone suggest the best way to modify the above statement to improve the performence.
Thanks,
Khasimsa

Hi Shaik,
           Dont use the select query within the loop.
          Performance wise it is not recommended.
Instead you select the above join query in an internal table i.e.,
SELECT a b   c, d INTO P_ITAB FROM MAEX
JOIN MARC ON MARCMATNR = MAEXMATNR
JOIN T001W ON T001WWERKS = MARCWERKS
WHERE MAEX~MATNR = P_VBPLP-MATNR
AND MARC~WERKS = T_VBDPL-WERKS
AND MAEXALAND = T001WLAND1
AND MAEX~GEGRU = 'DE'.
Then
Loop at itab.
read p_itab with key a
endloop.
This will improve your performance as well.
Regards,
Md Ziauddin

Inner join Statement

Hi All,
I am using this inner Join Statement
      SELECT *
      FROM vbap AS a INNER JOIN vbak AS b
                     ON avbeln = bvbeln
                     AND amandt = bmandt
      WHERE a~vbeln IN lr_vbeln AND
            a~posnr IN lr_posnr AND
            a~aedat IN lr_aedat AND
          ( b~vbtyp EQ 'A' OR
            b~vbtyp EQ 'B' OR
            b~vbtyp EQ 'G' ).
But when i see the Output, One of the field ERDAT is geeting picked up from VBAK table instead of VBAP table.
Any pointers on how can we select the ERDAT from VBAP using this inner Join.
I dont want to use 2 select stetements.
Regards,
Mayank

In Inner join, it is always advisable to put the header table as First table and secondly, it should be advisable to fetch only the requried fields. I believe that you might not required all the fields of VBAP table.
Select A~Vbeln
          A~vbtyp
          B~posnr
          B~erdat
          into table I_VBAP
          from vbak as A innner Join VBAP as B
          on a~vbeln = b~vbeln
          where   a~vbeln IN lr_vbeln AND
                      b~posnr IN lr_posnr AND
                      b~aedat IN lr_aedat AND
                     ( a~vbtyp EQ 'A' OR
                       a~vbtyp EQ 'B' OR
                       a~vbtyp EQ 'G' ).

Inner join statement correction

For three different tables we can write select statement like below?if any correction pleas correct it.
select *
    from ekko as a
    inner join ekpo as b
      on aebeln = bebeln
      inner join ekkn as c
       on bebeln = cebeln
    into corresponding fields of table gt_data
    where a~zvoyn in s_zvoyn
      and a~ekgrp in s_ekgrp
      and a~ebeln in s_ebeln
      and a~zbookref2 in s_bookr
      and a~lifnr in s_lifnr
      and a~waers in s_waers
      and b~matnr in s_matnr
      and c~kostl in s_kostl..

HI Venkee,
Yes this query will work but to improve the performance
use the required field names in the order as they are in the table instead of ' * '
declare an internal table with this fields. assume gt_data
and
avoid using into corresponding.
Regards,
Md Ziauddin.

Using the max function in a inner joined statement

I am trying to take from a database with two joined tables various datas from the record belonging to paul that has the highest entry number.
String query = "SELECT Table1.name, Table1.idNumber, Table2.Address Table2.entryNum FROM Table1 INNER JOIN Table2 ON Table1.idNumber = Table2.idNumber WHERE Table2.entryNum = max ( Table2.entryNum) AND Table1.name = 'Paul'";
The error message i get is.
Cannot have aggregate function in WHERE clause
Thanks for any help

I am trying to take from a database with two joined
tables various datas from the record belonging to paul
that has the highest entry number.SELECT
Table1.name,
Table1.idNumber,
Table2.Address
Table2.entryNum
FROM Table1 INNER JOIN Table2 ON Table1.idNumber = Table2.idNumber
WHERE Table2.entryNum =
( select max( Table2.entryNum) from table1, table2
where table1.idNumber=table2.idNumber
AND Table1.name = 'Paul'" );

Inner joins Vs for all entries

Hi All,
Pls let me know
the differences b/w innerjoins and for all entries,,,,which is the best option and Y??
Thanks in Advance,
Bye

Hi!
INNER JOIN is used if we want to retrieve some data from more than one table.
FOR ALL ENTRIES is used if we want some data from a table based on some conditions of some other table.
Using several nested INNER JOIN statements can be inefficient and cause time out if the tables become too big in the future."
In ABAP, these joins are first split by the ABAP processor and then sent to the database, with the increase in DATA in production system, these joins tend to give way if your database keeps growing larger and larger.
You should rather use "FOR ALL ENTRIES IN" (Tabular conditions), which is a much efficient way as far as performance is concerned.
Check these links:
inner joins and for all entries
inner join and for all entries
Reward points if it helps.
Regards
Sudheer

Why can't i use "INNER JOIN" in a query for SQL Server with JDBC??????

Hi,
I'm trying to execute some SQL queries and I just don't understand what's wrong.
I�m using Tomcat and SQL Server in order to do this, but when I�m try to execute a query with a INNER JOIN statements Tomcat raise a SQL exception... at the very first time I thought there was a problem with database connection but I realize that a simple query to a table works pretty well. then I found out some problems with JDBC:ODBC.... so I install JDBC for SQL Server 2000 and test with the same simple query and works..... so, I come to a conclusion.... INNER JOIN or JOIN statements can't be used in JDBC..... please... somebody tell I�m wrong and give me a hand...
I'm using TOMCAT 4 and JDK 1.4 SQL Server 2000
Error occurs when executeQuery() is called.... not prepareStatement().... ??????
Driver DriverRecResult = (Driver)Class.forName(driver).newInstance();
Connection ConnRecResult = DriverManager.getConnection(DSN,user,password);
PreparedStatement StatementRecResult = ConnRecResult.prepareStatement(query);
ResultSet RecResult = StatementRecResult.executeQuery(); <---- Exception raise here
So much tahnks in advance,

That's exactly what I think, driver it's raising the exception, but I don't know why.... i test the same query with INNER JOIN directly from SQL Query Analyser and it's works perfectly, my problem ain't SQL, but JSP and JDBC 'cause i'm a newbie about these issues.
Common sense tell me possible problems lie in SQLServer drivers 'cause i run the same pages on JRUN through jdbc:odbc and do works well, but by now i just depend on Tomcat.....
I've installed SQL Server drivers for JDBC but i just find it doesn't work fully... could be the version of JDK i've installed? what version do i need?
( I'm running Tomcat 4 with JDK 1.4 & SQL Server 2000 W2K )
thanks for reply.

Inner join with if statement , how to combine these code ?

Hello everyone, I have 2 group of code here. This 2 group of code is working without error. But I face a problem , I need to group up this 2 group of code. Please take a look, thank you This is the first code i create.
SELECT r.Name , r.Restaurant_ID, f.feature, r.Price_Range, r.Cuisine_ID, c.Cuisine,
    s.State_ID, s.State, l.Location_ID, l.Area, l.State_ID, r.Name, r.Location_ID
FROM Restaurants r, Bridge1_Restaurant_Features b, Features f, Cuisine c, State s, Location l
        where 0=0
        AND b.Feature_ID = f.Feature_ID
        AND b.Restaurant_ID = r.Restaurant_ID
        AND r.Cuisine_ID = c.Cuisine_ID
        AND r.Location_ID = l.Location_ID
        AND l.State_ID = s.State_ID
        <cfif ARGUMENTS.Feature_ID IS NOT "">
        AND b.Feature_ID IN (#ARGUMENTS.Feature_ID#)
        </cfif>
        <cfif ARGUMENTS.Price_Range IS NOT "">
        AND r.Price_Range IN (#ARGUMENTS.Price_Range#)
        </cfif>
        <cfif ARGUMENTS.Cuisine IS NOT "">
        AND r.Cuisine_ID = (#ARGUMENTS.Cuisine#)
        </cfif>
        <cfif val(ARGUMENTS.LocationID2) IS #val(ARGUMENTS.StateID)#>
        AND l.State_ID = #val(ARGUMENTS.LocationID2)#
        <cfelse>
            AND l.Location_ID = #val(ARGUMENTS.LocationID2)#
        </cfif>
Then, I notice the feature_ID i need to use another logic to show the result. The code is like this
SELECT r.Restaurant_ID, r.Name, f.Feature
FROM   Restaurants r
INNER JOIN Bridge1_Restaurant_Features b ON b.Restaurant_ID = r.Restaurant_ID
INNER JOIN Features f ON b.Feature_ID = f.Feature_ID
INNER JOIN
     SELECT Restaurant_ID, COUNT(Feature_ID) AS FeatureCount
     FROM   Bridge1_Restaurant_Features
     
     WHERE Feature_ID IN ( <cfqueryparam value="#ARGUMENTS.Feature_ID#" cfsqltype="cf_sql_integer" list="true"> )
    GROUP BY Restaurant_ID
    
     HAVING COUNT(Feature_ID) = <cfqueryparam value="#listLen(ARGUMENTS.Feature_ID)#" cfsqltype="cf_sql_integer">
) ck ON ck.Restaurant_ID = r.Restaurant_Id
I want combine this 2 group together. The second group have to replace
<cfif ARGUMENTS.Feature_ID IS NOT "">
    AND f.Feature_ID IN (#ARGUMENTS.Feature_ID#)
</cfif>
I try few way to group this 2 code, but fail to make it. The code i try is on below, it get error.
SELECT r.Name , r.Restaurant_ID, f.feature, r.Price_Range, r.Cuisine_ID, c.Cuisine,
        s.State_ID, s.State, l.Location_ID, l.Area, l.State_ID, r.Location_ID
        FROM Restaurants r, Features f, Cuisine c, State s, Location l
        INNER JOIN Bridge1_Restaurant_Features b ON b.Restaurant_ID = r.Restaurant_ID
        INNER JOIN Features f ON b.Feature_ID = f.Feature_ID
        AND r.Cuisine_ID = c.Cuisine_ID
        AND r.Location_ID = l.Location_ID
        AND l.State_ID = s.State_ID
        <cfif ARGUMENTS.Feature_ID IS NOT "">
        INNER JOIN
             SELECT Restaurant_ID, COUNT(Feature_ID) AS FeatureCount
             FROM   Bridge1_Restaurant_Features
             
             WHERE Feature_ID IN ( <cfqueryparam value="#ARGUMENTS.Feature_ID#" cfsqltype="cf_sql_integer" list="true"> )
            GROUP BY Restaurant_ID
            
             HAVING COUNT(Feature_ID) = <cfqueryparam value="#listLen(ARGUMENTS.Feature_ID)#" cfsqltype="cf_sql_integer">
        ) ck ON ck.Restaurant_ID = r.Restaurant_Id
        </cfif>
        <cfif ARGUMENTS.Price_Range IS NOT "">
        AND r.Price_Range IN (#ARGUMENTS.Price_Range#)
        </cfif>
        <cfif ARGUMENTS.Cuisine IS NOT "">
        AND r.Cuisine_ID = (#ARGUMENTS.Cuisine#)
        </cfif>
        <cfif val(ARGUMENTS.LocationID2) IS #val(ARGUMENTS.StateID)#>
        AND l.State_ID = #val(ARGUMENTS.LocationID2)#
        <cfelse>
            AND l.Location_ID = #val(ARGUMENTS.LocationID2)#
        </cfif>

Yeah Adam I am listen to you ! But Finally i solve it.
This is the code i solve .
SELECT r.Restaurant_ID, r.Name, f.Feature, r.Price_Range, r.Cuisine_ID, c.Cuisine,
                    l.Location_ID, l.Area, s.State
          FROM   Restaurants r
          <cfif ARGUMENTS.Feature_ID IS NOT "">
          INNER JOIN
               SELECT Restaurant_ID, COUNT(Feature_ID) AS FeatureCount
               FROM   Bridge1_Restaurant_Features
               
               WHERE Feature_ID IN ( <cfqueryparam value="#ARGUMENTS.Feature_ID#" cfsqltype="cf_sql_integer" list="true"> )
              GROUP BY Restaurant_ID
              
               HAVING COUNT(Feature_ID) = <cfqueryparam value="#listLen(ARGUMENTS.Feature_ID)#" cfsqltype="cf_sql_integer">
          ) ck ON ck.Restaurant_ID = r.Restaurant_Id
          </cfif>
          INNER JOIN Location l ON r.Location_ID = l.Location_ID
          INNER JOIN State s ON l.State_ID = s.State_ID
          INNER JOIN Cuisine c ON r.Cuisine_ID = c.Cuisine_ID
          INNER JOIN Bridge1_Restaurant_Features b ON b.Restaurant_ID = r.Restaurant_ID
          INNER JOIN Features f ON b.Feature_ID = f.Feature_ID
          <cfif ARGUMENTS.Cuisine IS NOT "">
          AND r.Cuisine_ID = (#ARGUMENTS.Cuisine#)
          </cfif>
          <cfif ARGUMENTS.Price_Range IS NOT "">
          AND r.Price_Range IN (#ARGUMENTS.Price_Range#)
          </cfif>
          <cfif val(ARGUMENTS.LocationID2) IS #val(ARGUMENTS.StateID)#>
          AND l.State_ID = #val(ARGUMENTS.LocationID2)#
          <cfelse>
               AND l.Location_ID = #val(ARGUMENTS.LocationID2)#
          </cfif>
Is it the code can be improve more ?

Inner join command

Hi Forum,
How to use Inner join command?
Please explain with an example.
Thanks,
Mahathi

Inner Join and Outer Join
The data that can be selected with a view depends primarily on whether the view implements an inner join or an outer join. With an inner join, you only get the records of the cross-product for which there is an entry in all tables used in the view. With an outer join, records are also selected for which there is no entry in some of the tables used in the view.
The set of hits determined by an inner join can therefore be a subset of the hits determined with an outer join.
Database views implement an inner join. The database therefore only provides those records for which there is an entry in all the tables used in the view. Help views and maintenance views, however, implement an outer join.
Specifying Database Tables
The FROM clause determines the database tables from which the data specified in the SELECT clause is read. You can specify either a single table or more than one table, linked using inner or outer joins. The names of database tables may be specified statically or dynamically, and you can use alias names. You can also use the FROM clause to bypass the SAP buffer and restrict the number of lines to be read from the database.
"Database table" can equally mean an ABAP Dictionary view. A view links two or more database tables in the ABAP Dictionary, providing a static join that is available systemwide. You can specify the name of a view wherever the name of a database table may occur in the FROM clause.
The FROM clause has two parts - one for specifying database tables, and one for other additions:
SELECT... FROM <tables> <options>...
In <tables>, you specify the names of database tables and define joins. <options> allows you to specify further additions that control the database access.
Specifying Database Tables Statically
To specify the name of a database table statically, use the following:
SELECT... FROM <dbtab> [AS <alias>] <options> . ..
The database table <dbtab> must exist in the ABAP Dictionary. The AS addition allows you to specify an alternative name <alias> that you can then use in the SELECT; FROM, WHERE, and GROUP BY clauses. This can eliminate ambiguity when you use more than one database table, especially when you use a single database table more than once in a join. Once you have defined an alias, you may no longer use the real name of the database table
Specifying Database Tables Dynamically
To specify the name of a database table dynamically, use the following:
SELECT... FROM (<name>) <options> . ..
The field <name> must contain the name of a database table in the ABAP Dictionary. The table name must be written in uppercase. When you specify the name of a database table dynamically, you cannot use an empty INTO clause to read all of the columns into the work area <dbtab>. It is also not possible to use alternative table names.
Specifying Two or More Database Tables as an Inner Join
In a relational database, you normally need to read data simultaneously from more than one database table into an application program. You can read from more than one table in a single SELECT statement, such that the data in the tables all has to meet the same conditions, using the following join expression:
SELECT...
FROM <tab> [INNER] JOIN <dbtab> [AS <alias>] ON <cond> <options>
where <dbtab> is a single database table and <tab> is either a table or another join expression. The database tables can be specified statically or dynamically as described above. You may also use aliases. You can enclose each join expression in parentheses. The INNER addition is optional.
A join expression links each line of <tab> with the lines in <dbtab> that meet the condition <cond>. This means that there is always one or more lines from the right-hand table that is linked to each line from the left-hand table by the join. If <dbtab> does not contain any lines that meet the condition <cond>, the line from <tab> is not included in the selection.
The syntax of the <cond> condition is like that of the WHERE clause, although individual comparisons can only be linked using AND. Furthermore, each comparison must contain a column from the right-hand table <dbtab>. It does not matter on which side of the comparison it occurs. For the column names in the comparison, you can use the same names that occur in the SELECT clause, to differentiate columns from different database tables that have the same names.
The comparisons in the condition <cond> can appear in the WHERE clause instead of the ON clause, since both clauses are applied equally to the temporary table containing all of the lines resulting from the join. However, each join must contain at least one comparison in the condition <cond>.
Specifying Two or More Database Tables as a Left Outer Join
In an inner join, a line from the left-hand database table or join is only included in the selection if there is one or more lines in the right-hand database table that meet the ON condition <cond>. The left outer join, on the other hand, reads lines from the left-hand database table or join even if there is no corresponding line in the right-hand table.
SELECT...
FROM <tab> LEFT [OUTER] JOIN <dbtab> [AS <alias>] ON <cond>
       <options>
<tab> and <dbtab> are subject to the same rules and conditions as in an inner join. The OUTER addition is optional. The tables are linked in the same way as the inner join with the one exception that all lines selected from <tab> are included in the final selection. If <dbtab> does not contain any lines that meet the condition <cond>, the system includes a single line in the selection whose columns from <dbtab> are filled with null values.
In the left outer join, more restrictions apply to the condition <cond> than in the inner join. In addition to the above restrictions:
EQ or = is the only permitted relational operator.
There must be at least one comparison between columns from <tab> and <dbtab>.
The WHERE clause may not contain any comparisons with columns from <dbtab>. All comparisons using columns from <dbtab> must appear in the condition <cond>.
Client Handling
As already mentioned, you can switch off the automatic client handling in Open SQL statements using a special addition. In the SELECT statement, the addition comes after the options in the FROM clause:
SELECT... FROM <tables> CLIENT SPECIFIED. ..
If you use this addition, you can then address the client fields in the individual clauses of the SELECT statement.
Disabling Data Buffering
If buffering is allowed for a table in the ABAP Dictionary, the SELECT statement always reads the data from the buffer in the database interface of the current application server. To read data directly from the database table instead of from the buffer, use the following:
SELECT... FROM <tables> BYPASSING BUFFER. ..
This addition guarantees that the data you read is the most up to date. However, as a rule, only data that does not change frequently should be buffered, and using the buffer where appropriate improves performance. You should therefore only use this option where really necessary.
Restricting the Number of Lines
To restrict the absolute number of lines included in the selection, use the following:
SELECT... FROM <tables> UP TO <n> ROWS. ..
If <n> is a positive integer, the system reads a maximum of <n> lines. If <n> is zero, the system reads all lines that meet the selection criteria. If you use the ORDER BY clause as well, the system reads all lines belonging to the selection, sorts them, and then places the first <n> lines in the selection set.
Examples
Specifying a database table statically:
REPORT demo_select_static_database.
DATA wa TYPE scarr.
SELECT *
INTO wa
FROM scarr UP TO 4 ROWS.
WRITE: / wa-carrid, wa-carrname.
ENDSELECT.
The output is:
The system reads four lines from the database table SCARR.
Specifying a database table dynamically:
REPORT demo_select_dynamic_database.
DATA wa TYPE scarr.
DATA name(10) TYPE c VALUE 'SCARR'.
SELECT *
INTO wa
FROM (name) CLIENT SPECIFIED
WHERE mandt = '000'.
WRITE: / wa-carrid, wa-carrname.
ENDSELECT.
A condition for the MANDT field is allowed, since the example uses the CLIENT SPECIFIED option. If NAME had contained the value scarr instead of SCARR, a runtime error would have occurred.
Inner join:
REPORT demo_select_inner_join.
DATA: BEGIN OF wa,
        carrid TYPE spfli-carrid,
        connid TYPE spfli-connid,
        fldate TYPE sflight-fldate,
        bookid TYPE sbook-bookid,
      END OF wa,
      itab LIKE SORTED TABLE OF wa
                WITH UNIQUE KEY carrid connid fldate bookid.
SELECT pcarrid pconnid ffldate bbookid
INTO CORRESPONDING FIELDS OF TABLE itab
FROM ( ( spfli AS p
            INNER JOIN sflight AS f ON pcarrid = fcarrid AND
                                       pconnid = fconnid    )
            INNER JOIN sbook   AS b ON bcarrid = fcarrid AND
                                       bconnid = fconnid AND
                                       bfldate = ffldate     )
WHERE p~cityfrom = 'FRANKFURT' AND
        p~cityto   = 'NEW YORK' AND
        fseatsmax > fseatsocc.
LOOP AT itab INTO wa.
AT NEW fldate.
    WRITE: / wa-carrid, wa-connid, wa-fldate.
ENDAT.
WRITE / wa-bookid.
ENDLOOP.
This example links the columns CARRID, CONNID, FLDATE, and BOOKID of the table SPFLI, SFLIGHT, and SBOOK, and creates a list of booking numbers for all flights from Frankfurt to New York that are not fully booked. An alias name is assigned to each table.
Left outer join:
REPORT demo_select_left_outer_join.
DATA: BEGIN OF wa,
        carrid   TYPE scarr-carrid,
        carrname TYPE scarr-carrname,
        connid   TYPE spfli-connid,
      END OF wa,
      itab LIKE SORTED TABLE OF wa
                WITH NON-UNIQUE KEY carrid.
SELECT scarrid scarrname p~connid
INTO CORRESPONDING FIELDS OF TABLE itab
FROM scarr AS s
       LEFT OUTER JOIN spfli AS p ON scarrid   = pcarrid AND
                                     p~cityfrom = 'FRANKFURT'.
LOOP AT itab INTO wa.
WRITE: / wa-carrid, wa-carrname, wa-connid.
ENDLOOP.
The output might look like this:
The example links the columns CARRID, CARRNAME, and CONNID of the tables SCARR and SPFLI using the condition in the left outer join that the airline must fly from Frankfurt. All other airlines have a null value in the CONNID column in the selection.
If the left outer join is replaced with an inner join, the list looks like this:
Only lines that fulfill the ON condition are included in the selection.

Avoiding inner joins????

Hi all,
I was just thinking of ways to improve the perfomance of my report. Its fetching data in to two different tables using two innerjoins and these two internal tables are again looped for some other manipulation. Can anyone tell me the ways i can avoid innerjoin or is there other ways to improve psrfomance by avoiding innejoins in general?
Rakesh

hi sir i was able to find out that
Using several nested INNER JOIN statements can be inefficient and cause time out if the tables become too big in the future."
Joins here (in ABAP) are not those Native SQL Joins. If you are talking about the Core RDBMS, which mean Oracle or SQL Server, then Undoubtedly Joins are the best.
In ABAP, these joins are first split by the ABAP processor and then sent to the database, with the increase in DATA in production system, these joins tend to give way if your database keeps growing larger and larger.
You should rather used "FOR ALL ENTRIES IN" (Tabular conditions), which is a much effecient way as far as performance is concerned.
For example :
DATA: BEGIN OF LINE,
        CARRID   TYPE SPFLI-CARRID,
        CONNID   TYPE SPFLI-CONNID,
        CITYFROM TYPE SPFLI-CITYFROM,
        CITYTO   TYPE SPFLI-CITYTO,
      END OF LINE,
      ITAB LIKE TABLE OF LINE.
LINE-CITYFROM = 'FRANKFURT'.
LINE-CITYTO   = 'BERLIN'.
APPEND LINE TO ITAB.
LINE-CITYFROM = 'NEW YORK'.
LINE-CITYTO   = 'SAN FRANCISCO'.
APPEND LINE TO ITAB.
SELECT CARRID CONNID CITYFROM CITYTO
INTO   CORRESPONDING FIELDS OF LINE
FROM   SPFLI
FOR ALL ENTRIES IN ITAB
WHERE CITYFROM = ITAB-CITYFROM AND CITYTO = ITAB-CITYTO.
WRITE: / LINE-CARRID, LINE-CONNID, LINE-CITYFROM, LINE-CITYTO.
ENDSELECT.
Do you have a ABAP Question?
Best regards,
SAP Basis, ABAP Programming and Other IMG Stuff

Re field order in INNER JOIN

Hi,
I need a suggestion for improvement of my inner JOIN statement.
internal table itab is of below type
type: begin of ty_itab
        field a
        field b
        field c
        field d
        end of ty_itab
I have to join two database table TABLE1 and TABLE2. Fields a and d are from TABLE2 and fields b and c are from TABLE 1.
But in the internal table I must have the fields in the order fielda,b,c,d.
Which of the below two options will be better for performance ? And why ?
option 1:
SELECT tab2~a
              tab1~b
              tab1~c
              tab2~d into corresponding fields of itab from TABLE1 as tab1 and TABLE2 as tab2 on..........
option2:
SELECT tab1~b
              tab1~c
              tab2~a
              tab2~d into corresponding fields of itab from TABLE1 as tab1 and TABLE2 as tab2 on..........
Thanks in advance...
Best Regards
Ananya Mukherjee
Moderator message - Cross post locked
Edited by: Rob Burbank on May 28, 2009 9:43 AM

I am not satisfied with your two options. Because of following reason,
1. First I want to know which one is master table and item table. Because in inner join select query you want to use master table as first and you want to use the item table as second.
Example:
SELECT TAB2A TAB1B TAB1C TAB2D
      INTO TABLE ITAB
    FROM <MASTER TABLE1> AS TAB1 INNER JOIN <ITEM TABLE2> AS TAB2 ON..........
2. You should not use the INTO CORRESPONDING FIELDS OF ITAB. Instead of this you can change the field order in internal table or in select query.
Example:
Use following way
TYPE: BEGIN OF TY_ITAB
                FIELD A
                FIELD B
                FIELD C
                FIELD D
           END OF TY_ITAB
SELECT TAB2A TAB1B TAB1C TAB2D
     INTO TABLE ITAB
   FROM <MASTER TABLE1> AS TAB1 INNER JOIN <ITEM TABLE2> AS TAB2 ON..........
Or , Anyway you are going to use in program only. It will not affect your logic if change the field order in the internal table.
TYPE: BEGIN OF TY_ITAB
                FIELD B
                FIELD C
                FIELD A
                FIELD D
          END OF TY_ITAB
SELECT TAB1B TAB1C TAB2A TAB2D
     INTO TABLE ITAB
   FROM <MASTER TABLE1> AS TAB1 INNER JOIN <ITEM TABLE2> AS TAB2 ON..........
3. In inner join query, the order of Where condition also create the perform issue. Because in where condition maximum you try to use all the primary key from <MASTER TABLE1> and <ITEM TABLE2> and field order in where condition should be same order in <MASTER TABLE1> and <ITEM TABLE>.
This are the things you want to take care when you try to use INNER JOIN Query. If you have any clarification please let me know. I will try answer your Questions.
Ravi.
Edited by: RavivarmanP on May 28, 2009 6:55 PM

How to Join two tables using the Inner Join

Hi All,
I have two tables i.e table1 and table2 as i have created two otds and my present requirement is to join this two tables and get the results and using this i need to do some logic and update another table3.
can some one help me out how to go for the above req.
Thanks in Advance
Srikanth

The best efficient way to use inner join is create two input otds,use there otd's in create a collaboration usinf etl.
after selecting two input otd's create a inner join statement and map it to out put otd.
while using the etl the performance of the over all integration is increased 20 time of the normal integration.
Hopes this will helps,,
Thanks,
Papa Rao.

Inner Join.

I am using a Inner join statement. I dont see any problem in DEV but i see some problems in PMT. IT duplicating the records in the output. I see the same order twice.
The statement is,
    SELECT plaf~plnum
           maranormt plafmatnr
           makt~maktx
           plafpwwrk plafpaart plaf~verid
           plafauffx plafpsttr plafgsmng plafplscn
      INTO TABLE t_plaf
      FROM plaf
     INNER JOIN mara
        ON plafmatnr EQ maramatnr
     INNER JOIN makt
        ON maramatnr EQ maktmatnr
       FOR ALL entries IN t_mara
     WHERE plaf~matnr = t_mara-matnr.
However i looked into the MAKT table. I see 2 descriptions for the same material no.
I am assuming thats the problem.
ANy suggestions.
Ster.

> Hello,
>
> Check this code . I tried it now and it's working
>
>
> Tables: plaf,mara,makt.
>
> Data: it_plaf type standard table of plaf.
> data: it_mara type standard table of mara,
>       it_makt type standard table of makt.
> ct-options: s_plnum for plaf-plnum,
>                 s_matnr for mara-matnr.
> plaf into table it_plaf
>          where plnum in s_plnum
> and matnr in s_matnr.
>
> if it_plaf[] is not initial.
>
>    select * from mara into table it_mara
>        for all entries in it_plaf
>    where matnr = it_plaf-matnr.
> Select * from makt into table it_makt
>          for all entries in it_plaf
> where matnr = it_plaf-matnr.
>
> endif.
>
> Loop at it_mara into wa_mara.
> read table it_plaf into wa_plaf with key matnr =
> wa_mara-matnr.
> if sy-subrc = 0.
> move-corresponding to wa_final.
> endif.
> read table it_makt into wa_makt witk key matnr =
> wa_mara-matnr.
> if sy-subrc = 0.
> Move-corresponding to wa_final.
> endif.
> append wa_final to it_final.
> clear: wa_mara,wa_plaf,wa_final.
> endloop.
>
>
> Regards,
> Deepu.K
It would be better for performance to use Field-Symbols -;)
FIELD-SYMBOLS: <MARA> LIKE LINE OF IT_MARA.
Loop at it_mara into <MARA>.
*Process data....
endloop.
Greetings,
Blag.

Help with Inner join problem

The following query works fine as long as there is a value in the subID field, which is at the end of the inner join statement. If the subID is blank then no data is output, even though it is there. Try as I may, I can not get the right solution in the where statement to get the data to show without the subID. What am I missing?
<cfquery name="getInfo" datasource="#application.database#">
select page_id, pageName, pages.content, pages.cat_id, pages.seo_title,pages.seo_desc,pages.seo_words,pages.h1_title,pages.pic,pages.brochure,pa ges.video,catagories.catagory,subcat.subID,subcat.sub_category
from (pages INNER JOIN catagories ON pages.cat_id = catagories.cat_id) INNER JOIN subcat ON pages.subID = subcat.subID
where pages.page_id = #page_id#
</cfquery>

Rick,
Looks like you need a LEFT OUTER join to the "subcat" table, so that all records for "pages" and "catagories" are returned even if no matching "subcat" records exist. INNER joins will only return selected records when the tables on both sides of the join statement have matching values, while a LEFT OUTER (sometimes also known simply as a LEFT join) join will return *all* selected records from the table(s) on the left side of the join statement regardless of whether there are matching records from the table on the right side of the join statement. When there are no matching records from the table on the right side of the join statement, any columns in your SELECT clause that are from the table on the right side of the join statement will contain NULLs.
HTH,
-Carl V.

Reports - Inner Joins

Dear Friends,
I need to prepare a classic report based on the following parameters :
I would like to know, how to join these three tables using Inner Joins - MARA, MARC, MSTA.
I should be able to view the fields from these tables.
I tried out with the common fields from these tables, viz. MARA - MATNR - MARC, MARC - WERKS - MSTA.
I would appreciate, if anyone replies me with the select statement using the above mentioned tables using Inner Joins statement with any common fields .
Thanking you in anticipation.

Dear dinesh kumar
1. We can join the three tables with matnr field.
2. WERKS has to be provided from the program - (plant).
   ie. For which plant, data is required.
3. Due to MSTA table, you may get multiple records
   for same MATNR. bcos of maintenance records
   by different departments in MSTA Table.
If it helps, pls give points.
REPORT abc.
data : begin of itab occurs 0,
       matnr like mara-matnr,
       "---- Other Fields
       end of itab.
data : matnr like mara-matnr.
data : werks like marc-werks.
Query
select a~matnr
into table itab
from mara as a
inner join marc as b
on amatnr = bmatnr
inner join msta as c
on amatnr = cmatnr
Required Conditions From Program
where a~matnr = matnr
and b~werks = werks.
Thanks & Regards,
Amit Mittal.

Alternative way for double inner join statement

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