Abap read table index statement syntax and functionality. When the first row is deleted, there are 29,999 rows in internal table to be reindexed. Loop at sets sytabix to the index of the current line at the beginning of each loop lass. In each loop pass, the system field sytabix contains the row number of the current row in the primary table index. Sy lilli is the number of the selected line in the absolute list. The field is either not set or is set to 0 for hashed. See here to view full function module documentation and code listing, simply by.
This tutorial explains the difference between the system variables sy tabix and sy index. If an entry with the specified index was found, the system field sy subrc is set to 0 and sy tabix contains the index of that line. For the bam file example, lets use one from the genomes project. The input data file must be position sorted and compressed by bgzip which has a gzip 1 like interface. How can i give a field a value with a specific index. Difference between sy tabix and sy index in sap abap. The system reads the line with the index from the table. Sy tabix is set by the statements below, but only for index tables. For further detauls, refer to the comparing section of the additions sysubrc 4. In this book, a naming convention is used for internal tables. How to create checkbox in selectionscreen using write statement.
Hashed tables the lines are processed in the sequence in which they were inserted in the table, and by the sort sequence with the sort statement. If the read is successful, the system field sy tabix contains the row number specified in idx in the primary or secondary table index used. The part can specify a further processing option for the line that is retrieved. Begin of itab occurs 10, col1 type c, col2 type i, end of. In turn, this determines the value of the table index sy tabix. Sy subrc 8 the key sought is greater than that of the last table entry. This tutorial is the list of sap system fields and their functions such as batzo background submit once, bspld background submit, list output to spool, ccurs rate specificationresult field currency convert, ctabl exchange rate table from currency conversion.
Read tabix file, similar to running tabix in command line. Mytable is an internal table of the hashed table type, with record as the work area and cola as the unique key. Here i demonstrate with two simple examples some of the advantages of using tabix, namely speed and compression. Sytabix is set by the statements below, but only for index tables. The system variable sytabix contains the index of the appended line. The from and to options restrict the number of lines which the system has to read. Tabix indexes a tabdelimited genome position file in. Syindex holds the current executing records index only for the do while loop and not for the read statement. While cnt sy tabix or you want to stop at first occurrence of some value or when condition is achieved last example picture. What is the difference between syindex and sytabix. It gives examples of classic abap and its 740 equivalent. When you read the inner table with the key, you get the index of the entry is set in the field sy tabix.
Abap loop at itab statement syntax and functionality in sap. Dangerous liaisons in userexits and how to avoid them. In your example, if the read is unsuccessful, sytabix will be set to 0. Sy subrc 0 entry found sy tabix is set to the index of the found entry sy subrc 0 entry not found the output area remains unchanged. Entries tagged with examples the difference between sy tabix and sy index. Sap tutorial difference between sytabix and syindex. Please below an explanation of the system variables sy tabix and sy index. How to read lines by using a search key other than a table key data. Last addressed line of a standard table or sorted table. Following is the syntax to add a single line to an internal table. Syindex is a system variable which acts as a loop iteration counter, it stores loop iteration number.
When the system successfully adds a line to the table, sysubrc is set to 0. Or if the field is not initial i wanna change the value on this index example. I got excite to replace my parallel cursor algorithms but i think i would need to halt on that. Sytabix always holds the current executing records index for both the loop. If the value of idx is less than or equal to 0 or greater than the number of table rows, no row is read and sy subrc is set to 4. The field is either not set or is set to 0 for hashed tables.
Collect sets sytabix to the index of the existing or inserted line in the table. In loop and endloop with respect to internal table and workarea use sy tabix as tabix takes the row number of internal table during the current loop process. At the end of the loop, sytabix is reset to the value that it had before entering the loop. When search key or index num used to get the matching line, the processing starts from beginning of the table until the match found. Abap parallel cursor things to remember abap help blog. Statement append will set sy tabix to the position of the last table row.
If you want to use the sy tabix, you would need to use the old read table statement. Below is the pattern details for this fm showing its interface including any import and export parameters, exceptions etc as well as any documentation contributions specific to the object. Sy index comes into picture during do and enddo index is also used incase of read table commmand. What is the difference between sytabix and syindex. Sap abap interview questions sap interview questions for freshers. For example, when youre looping two tables, one of headers and another of entries, do you do this. So when you are looping over an internal table, you use sytabix. Change system fields like sytabix of syindex can have unwanted side effects. Its very true that sytabix contains the index number of current row of an internal table. Within the processing block, the system field sytabix contains the index of the current line. What is the difference between sytabix and sy index.
The value of sy subrc variable is 0 and that of the sy tabix variable is 3, because mytable1 is an index table. In each loop pass, the system field sytabix contains the value 0. You can use the additions from and to to specify the indexes and of the first and last entries that you want to read. Begin of itab occurs 10, col1 type c, col2 type i, end of itab. Sap abap data element sytabix row index of internal. If you want the result value, use the table expression instead. Whereas syindex in used to find the number of current pass in the loop statement. When the system successfully adds a line to the table, sy subrc is set to 0. Sytabix stores index number of internal table record endloop. After each append statement, the sytabix variable contains the index number of the. If the above step executed successfully, it means data is there in the second table associated with the key.
June 1 sap interv iew questions for freshers awesome inc. Download this books into available format unlimited. What are the advantagesdisadvantages of logical databases. If the table has the type hashed table, sytabix is set to 0. The internal table rows are in their original order, so the values of sy index and sy tabix match. Inserting lines using the index the insert statement allows you not only to insert lines in any. August 10, 2015 code sample, for dummies, tutorials by abapcookbook editor. The system variable sy tabix contains the index of the appended line. This return code can only occur when you use the comparing addition. System fields i report zbctcb93 no standard page heading. On line 24, the internal table is sorted again using the same statement.
Efficiently read sequence data vcf format, bcf format, metal format and bgen format into r description usage arguments value see also examples. What is the difference between the function module and a normal abap4 subroutine. You would need to use this field to start the inner loop. That is, it will contain the position of the record we are accessing in an internal table. Sytabix is a syatem variable which stores the index current processing record of an internal table. The value of sytabix depends on the table type and whether the binary search addition was specified. That is, it will contain the position of the record we are accessing in an. Now that ive seen what a colleague has achieved with it, i can see the light. Dear sirs, please i want to set sy tabix 0 after end loop to reread again. Line 18 reorders the rows so that the values of t are in ascending order. The field is either not set or is set to 0 for hash tables.
Append sets sy tabix to the index of the last line of the table, that is, it contains the overall number of entries in the table. Append sets sytabix to the index of the last line of the table, that is, it contains the overall number of entries in the table. Within the processing block, the system field sy tabix contains the index of the current line. This advantage of loop from index also works if you use a sorted table instead of normal internal tables. For example, after appending the first row, sytabix will be set to 1. This would give the first value regarding the key and also its position in the table sy tabix. Sy tabix contains the current line in an internal table. Diferencias entre sy tabix vs sy index vs sy subrc. Sap abap data element sytabix row index of internal tables sap datasheet the best online sap object repository. Initially, mytable is populated with four lines, where the cola field contains the values of the syindex variable and the colb field contains the cube of the values of the syindex variable.
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