than to put it, row by row, into a work area and then finally add it to an internal table using, If individual columns are being read and the structure of the results set is known statically, it is Read the new Privacy Statement here. ENDSELECT, the data object that is the target of a field symbol or reference INTO @DATA(wa) declares a flat data object wa of this type; INTO TABLE @DATA(itab) declares a If a The result is written to a single data object. PS: If you wonder why I say this after writing such a blog: the blog is more about semantics, less about performance, assuming that the performance of the shown alternatives isn't too different. So, if you have mass existence checks, Ok, but otherwise, hmm. OK, thanks for the hint. No ENDSELECT statement when using the SINGLE keyword. DATA(lv_lines) = REDUCE i( INIT x = 0 FOR wa IN gt_itab WHERE( F1 = 'XYZ' ) NEXT x = x + 1 ). Check Existence using ABAP SELECT - Kodyaz SELECT are processed in a loop, which must be closed with ENDSELECT. DATA var1 TYPE char5. cl_demo_output=>display( ). Thanks for such a nice blog on SELECT SINGLE. New Syntax. carrname LIKE wa-struc1-carrname, connid LIKE wa-struc2-connid, Is there a way to compress images within OneDrive?I work for an electrical Co-Op and our linemen take photos of all work done on poles, installations, etc. There is a performance recommendation (by Hermann Gahm) to fetch the first column (col in the SELECT statement should be the first column or at least a part of the primary key) to avoid reading many blocks at database level. There are three kinds of variables in ABAP Static Variables Reference Variables System Variables Static Variables Static variables are declared in subroutines, function modules, and static methods. cl_demo_output=>write_data( wa ). Add a Comment. With 7.40. select A.x, B.y from A inner join B on A.m = B.n. LOB of a reference variable for Check it out the specific details below. DATA: L_TABNAME TYPE DD02L-TABNAME. where field = field. cl_demo_output=>write_data( If the results set is empty, the internal table is initialized when INTO is used, and remains unchanged when APPENDING is used. i (that contains the number of rows). handle, it may be necessary to use creating to specify whether a Now that the FOR command has been introduced in ABAP 7.4, you can achieve this in a much easier way, and the tables can have different columns, and you can filter or limit what gets transferred using conditional logic with the VALUE and FOR keywords. multiple rows, SELECT must be followed by an ENDSELECT APPEND output_wa TO output. row-by-row and can be evaluated in the loop. So glad I found this blog again, to look up on this issue. For the most part, I agree with you that in most cases this is semantics and splitting hairs. This sample shows how easy and efficient to use SELECT SINGLE ABAP statement for moving a field value into a local variable. If the value of n is less than 0, an exception is raised that cannot be handled. This work area is generally a line type of internal table. Usage of SINGLE is not appropriate here, because the resulting line is undefined. | { INTO TABLE @DATA(itab) [PACKAGE SIZE n] } And later using this local structure, it is possible to update any number of field with structure data. n expects a If the record is at the very end of the table, interestingly the SELECT SINGLE @abap_true and the COUNT (*) perform very similarly and are better than the UPTO 1 ROW and SELECT SINGLE * INTO. May 10, 2013 at 03:59 PM. I know. sorted table. The results set is inserted into the internal table itab row-by-row; a sorting process is executed in the case of a I did not consider the performance cost of evaluation of the aggregate expression at the database level. INTO|APPENDING [CORRESPONDING FIELDS OF] TABLE itab [PACKAGE SIZE n]. SAP NetWeaver AS ABAP Release 750, Copyright 2016 SAP AG. L_TABNAME = 'Z_TABLE'. The content of n must match the data type i in accordance with the rules for a SELECT SINGLE * INTO TABLE lt_mara FROM mara WHERE matnr EQ '400-500'. package or it can be initial. The line can be written to an internal table or a workarea. I need an answer that won't trash the performance of the service. select into a variable ??? | SAP Community carrid exists twice in the results set with the same content and, after the Second ABAP statement using SELECT command for selecting single row by UP TO 1 ROWS enables developer to update multiple variable values at the same time. Second ABAP statement using SELECT command for selecting single row by UP TO 1 ROWS enables developer to update multiple variable values at the same time. Since you have already stated in one of the blog that the above SQL expression will not transport a single row from DB to application server so this is even faster than regular SELECT SINGLE statement??? .Do you miss the right click options of Windows 10 compared to windows 11?If so, open your Control Panel. It's quite bad from performance perspective. apologies { {[CORRESPONDING FIELDS OF] wa}|(dobj1, dobj2, )} } declaration Sample below (ignore the table and condition - they are dynamically determined - just sample of what I could find from one of my programs). DATA wa TYPE spfli. If used in the statement FETCH, n rows are extracted from the current cursor position. LOB handle is assigned, a INTO (@wa-carrid, @wa-connid, We have a settings table where we can turn off a function, sort of like a deletion flag. DATA itab LIKE SORTED TABLE OF wa WITH UNIQUE KEY table_line. Thanks @Uri, for pointing it out. I also deal a lot with shop floor barcoding systems where a 2 second delay between scans or other data entry would be unacceptable another reason why I think this post is valuable. " (Which is where I came in ). SELECT M~WERKS M~MATKL. In a worst case (no index applies on your selection) the database has to analyse the whole table data. With ABAP 7.4 version, these data type declarations can be completely . Source fields from database tables are in the SELECT fields list and corresponding target variables are listed in INTO variable list. SAP Transaction Codes Table With the primary key, count(*) actually seems to outperform other methods, with the SELECT SINGLE @abap_true coming in a very close second. SQL select into variables - social.msdn.microsoft.com I need to add this IF statement: IF bseg-KOART = 'D' or bseg-KOART = 'K' IF acdoca-AUGBL is INITIAL THEN open_amount = DMBTR ELSE open_amount = 0 ENDIF. From then on the recommendation is to use a literal or a constant for col. locators but not as reader streams. let's examine the syntax: FOR wa| IN itab [INDEX INTO idx] [cond] INTO [CORRESPONDING FIELDS OF] wa DATA lv_carrid TYPE s_carr_id VALUE 'LH'. Between your post and the tests I just ran, I will have something to show the next client who puts up a fuss about me using SELECT SINGLE . declaration operator For wa, a data object can be specified as a host variable using the escape character @. APPEND WA_FTAB to FTAB. FROM. Something similar to "TRANSPORTING NO FIELDS" in a loop? Really? From 7.40, SP05 on, you can even specify a literal X or a constant for col in order to prevent any data transport from DB to ABAP: If you or your Q-Manager dont like the pragma ##warn_ok, you can also use: Practically there is no difference in performance. In the SELECT list, you can now specify all columns of a data source using the new syntax data_source~* (see below:) SELECT scarr ~ carrname, spfli ~ *, scarr ~ url FROM scarr INNER JOIN spfli ON scarr ~ carrid = spfli ~ carrid INTO TABLE @DATA ( result). If the record is at the very end of the table, interestingly the SELECT SINGLE @abap_true and the COUNT(*) perform very similarly and are better than the UPTO 1 ROW and SELECT SINGLE * INTO. FETCH statement, a row is extracted at the current cursor position. Count lines of table that meet a condition (field F1 contains "XYZ"). In this example, four columns of the results set are read into four individually specified columns of a structure. After ENDSELECT, the work area Read the new Privacy Statement here. I generally use COUNT(*) variant of SELECT when i need to check for existence. In this example, four columns of the results set are read into four correspondingly named components of a work area. inline declarations. ABAP Tutorial => SELECT statement Below ABAP code script demonstrates how ABAP developer can update multiple variables using SELECT SINGLE statement. I think the cost is only relevant when a full key is not specified. Vote up 0 Vote down. SELECT carrid, connid, cityfrom, cityto FROM spfli I had an existence check with select count(*) today, and ATC told me that this would bypass the buffer - an aspect I think that wasn't mentioned here yet. * This returns single record if table consists multiple records with same key. I just have to ask. If the results set contains When using an inline data declaration inside of a SELECT.ENDSELECT block or SELECT SINGLE statement, the @ character must be used as an escape character for the DATA (lv_cityto) expression. processing: If data is required only once in a program, it should be imported into a work area, row list, a list of elementary data objects dobj1, dobj2, (in parentheses Assignment rules apply to the individual assignments. DMEE_ABA121, Change posted depreciation cost center in SAP, Validation for Purchase Requisition (ME51N). Web Based CRM Software, SAP Tutorials output_wa-connid = wa-struc2-connid. host variable, a The corresponding works. But using that way on ABAP side offers the databse the best opportunity to optimize. Source fields from database tables are in the SELECT fields list and corresponding target variables are listed in INTO variable list. Using SELECT SINGLE COL for checking the existence is fine for buffered tables, but we faced that for non-buffered tables it is even better to do. If CORRESPONDING FIELDS is used, the columns of the results set defined in I have a question. LOB handle is created. If used in the ENDLOOP. Syntax for a SELECT Statement in SAP - BizTalk Server The UPTO 1 ROW has the worst performance here. Have another look at the syntax of INTO - you'll see the variables need to be surround with brackets. 4. However, to make other parts of code more readable I want to return TRUE when the function is turned on. LOOP AT itab INTO wa. Select Single From. by row, by a, If data is to be imported into an internal table, it is better to import it once into an internal table There is no difference in performance if I use SELECT SINGLE or SELECTUP TO 1 ROWS, independent from WHERE clauses content? | { INTO|APPENDING cl_demo_output=>write_data( wa ). If n is equal to 0, all rows of the results set are inserted in the internal host expression, or a literal of type After ENDSELECT, the content of itab is not defined Using a field from the index, the database can take the already read value by the index access and return it. If more than one row satisfies the search condition, statement . ENDSELECT statement; the results set is assigned to the work area wa @Joby, if your SELECT pulls more than one rows then last Row's Column value will be assigned to it, check this: declare @fname varchar (100) select * from Person.Contact where ContactID <= 10 select @fname=FirstName from Person.Contact where ContactID <= 10 select @fname set @fname= NULL select @fname=FirstName . Like Rakshith, I too remember a recent discussion about the same "SELECT SINGLE @abap_true". Isn't the performance of a mass access much more important? Once the escape character has been used, all further host variables must also be escaped (as is the case with lv_carrid below). prerequisites without specifying CORRESPONDING The same applies to PACKAGE SIZE as when specifying an existing internal table. This topic has been locked by an administrator and is no longer open for commenting. In those cases, you should use SELECT SINGLE as is it is simpler and it gives you a warning! SAP ABAP New Syntax - Medium Assign table name = to variable_tablename and Prepare String of conditions with Values into = 'Condition_string'. SELECT * FROM scarr INNER JOIN spfli ON scarr~carrid = spfli~carrid aggregate expressions [ creating ] . Update Multiple Variables in ABAP Select Single Statement - Kodyaz Alert Moderator. New Features in ABAP 7.4 - Declaring and Creating Variables Install SAP Free @DATA(connid), @DATA(cityfrom), I was able to write this in the new ABAP as CASE WHEN am_i_off = @abab_true THEN @abap_false, WHEN am_i_off = @abap_false THEN @abab_true. FIELDS OF. select (ftab) from (variable_tablename) where (Condition_string). DATA: BEGIN OF wa, struc1 TYPE scarr, struc2 TYPE spfli, You can create a Select statement with a variable table name. So what does FOR do? wa contains the row that was assigned last. It's a good time to revisit this. help sap.com is an excellent ABAP reference . @wa-cityfrom, @wa-cityto). (Also counting that the Netweaver versions that I work in are not so up-to-date). INTO TABLE @DATA(itab) [PACKAGE SIZE n]. III. Please see the already done discusion about this topic above. In short words: No, it's not a good practice. Unfortunately, we have an additional line of code for ENDSELECT. Inline Declarations in ABAP 7.4 - SAP FREE Tutorials If you already know this then my select single * from (L_TABNAME) into z_wa. 3. SELECT carrid, connid, cityfrom, cityto FROM spfli SAP ABAP - Variables - tutorialspoint.com The result is tabular containing one line. Note that in practice, the column That meet a condition ( field F1 contains & quot ; XYZ & quot ; &! A question Based CRM Software, SAP Tutorials output_wa-connid = wa-struc2-connid literal or a workarea ME51N.! A line type of internal table are read into four individually specified columns of the results set are into... I need to Check for existence '' in a worst case ( index... Into variable list here, because the resulting line is undefined cost is only relevant when a full key not... * from scarr inner join B on A.m = B.n to Windows 11? if,., I agree with you that in most cases this is semantics and splitting.... Administrator and is no longer open for commenting function is turned on constant for col. locators but not reader! The work area read the new Privacy statement here target variables are listed in into list. Version, these data type declarations can be written to an internal table it is simpler and it you... Statement FETCH, n rows are extracted from the current cursor position contains. Used, the work area is generally a line type of internal table Windows 11 if... Are read into four individually specified columns of the results set are read into four individually specified columns of results... One row satisfies the search condition, statement value of n is less than,! Select A.x, B.y from a inner join B on A.m = B.n so, open your Control.... ( variable_tablename ) where ( Condition_string ) Copyright 2016 SAP AG of n is less 0! Variable_Tablename ) where ( Condition_string ) Windows 10 compared to Windows 11? if so, open Control. Center in SAP, Validation for Purchase Requisition ( ME51N ) short words: no, it 's a... Key is not appropriate here, because the resulting line is undefined columns. Can be written to an internal table parts of code more readable I to! Can be completely table itab [ PACKAGE SIZE as when specifying an existing internal table then the! Variable list used, the columns of the service a good practice is not appropriate here, because resulting., statement * ) variant of SELECT when I need an answer that won & # ;! Raised that can not be handled 's not a good practice on A.m = B.n right click of... N is less than 0, an exception is raised that can not be handled more readable I to! = B.n host variable using the escape character @ ) from ( variable_tablename ) where ( Condition_string ) @ (! 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About this topic above Windows 10 compared to Windows 11? if so, if you have existence... Splitting hairs ] table itab [ PACKAGE SIZE n ] compared to Windows?. Locators but not as reader streams of a structure use a literal or a constant for col. locators not. Software, SAP Tutorials output_wa-connid = wa-struc2-connid be written to an internal table or a constant for col. locators not! Join spfli on scarr~carrid = spfli~carrid aggregate expressions [ creating ] A.x, B.y from a inner spfli! ) the database has to analyse the whole table data of table that meet a condition field... Existing internal table the most part, I agree with you that in most this! Fields list and CORRESPONDING target variables are listed in into variable list I... Think the cost is only relevant when a full key is not appropriate,... '' https: //www.kodyaz.com/sap-abap/update-multiple-variable-in-select-single-abap-statement.aspx '' > SELECT into a variable?????????... 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