DIFFERENCE BETWEEN SY-TABIX and SY-INDEX

Difference between SY-TABIX and SY-INDEX? Where it is used?

Can u check SY-SUBRC after perform?

SY-TABIX 

• - Current line of an internal table. SY-TABIX is set by the statements below, but only for index tables. The field is either not set or is set to 0 for hashed 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.
• COLLECT sets SY-TABIX to the index of the existing or inserted line in the table. If the table has the type HASHED TABLE,SY-TABIX is set to 0.
• LOOP AT sets SY-TABIX to the index of the current line at the beginning of each loop lass. At the end of the loop, SYTABIX is reset to the value that it had before entering the loop. It is set to 0 if the table has the type HASHED TABLE.
•  READ TABLE sets SY-TABIX to the index of the table line read. If you use a binary search, and the system does not find a line, SY-TABIX contains the total number of lines, or one more than the total number of lines. SY-INDEX is undefined if a linear search fails to return an entry.
•  SEARCH FOR sets SY-TABIX to the index of the table line in which the search string is found.

SY_INDEX - In a DO or WHILE loop, SY-INDEX contains the number of loop passes including the current pass.

SY-TABIX - Current line of an internal table. SY-TABIX is set by the statements below, but only for index tables. The field is either not set or is set to 0 for hashed 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.

* COLLECT sets SY-TABIX to the index of the existing or inserted line in the table. If the table has the type HASHED TABLE, SY-TABIX is set to 0.

* LOOP AT sets SY-TABIX to the index of the current line at the beginning of each loop lass. At the end of the loop, SY-TABIX is reset to the value that it had before entering the loop. It is set to 0 if the table has the type HASHED TABLE.

* READ TABLE sets SY-TABIX to the index of the table line read. If you use a binary search, and the system does not find a line, SY-TABIX contains the total number of lines, or one more than the total number of lines. SY-INDEX is undefined if a linear search fails to return an entry.

* SEARCH FOR sets SY-TABIX to the index of the table line in which the search string is found.

SY_INDEX - In a DO or WHILE loop, SY-INDEX contains the number of loop passes including the current pass.

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