Performance & Database (9 Rules)

Database query efficiency, buffer protection, and internal table operation guidelines.

Category Overview

This category enforces 9 native ATC rules adhering to SAP Clean ABAP and ABAP Cloud standards. Each check executes natively inside Eclipse ADT and SAP GUI.

Rules in this Category

Rule Name	Native ATC Class	Suppression Tag	Automated QuickFix
Avoid Database Access Inside Loops (N+1 Query Antipattern)	`ZCL_SKYLINT_NO_DB_IN_LOOP`	`#EC NO_DB_IN_LOOP`	-
Prevent Empty Driver Tables in FOR ALL ENTRIES (Full Table Scan Bug)	`ZCL_SKYLINT_NO_EMPTY_FAE`	`#EC NO_EMPTY_FAE`	⚡ Ready
Avoid SELECT * in OpenSQL Queries (Minimize Memory & Network Overhead)	`ZCL_SKYLINT_NO_SELECT_STAR`	`#EC NO_SELECT_STAR`	-
Avoid SELECT ... ENDSELECT Row-by-Row Cursor Loops	`ZCL_SKYLINT_NO_ENDSELECT`	`#EC NO_ENDSELECT`	-
Require Explicit ORDER BY for Deterministic SELECT Queries	`ZCL_SKYLINT_PREF_ORDER_BY`	`#EC PREF_ORDER_BY`	-
Specify TRANSPORTING in Internal Table MODIFY and READ Operations	`ZCL_SKYLINT_PREF_TRANSPORT`	`#EC PREF_TRANSPORT`	-
Prefer Pass-by-Reference for Internal Tables in Method Signatures	`ZCL_SKYLINT_PREF_PASS_BY_REF`	`#EC PREF_PASS_BY_REF`	-
Do Not Mutate the Internal Table Currently Being Looped (Iterator Invalidation)	`ZCL_SKYLINT_NO_MOD_LOOP_TAB`	`#EC NO_MOD_LOOP_TAB`	-
Avoid String Concatenation Inside Loops (Quadratic Memory Allocation)	`ZCL_SKYLINT_NO_CONCAT_LOOP`	`#EC NO_CONCAT_LOOP`	-

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Performance & Database (9 Rules) ​

Rules in this Category ​

Performance & Database (9 Rules)

Rules in this Category