Rule Definition
SQL Queries that do not use table indexes are extremely dangerous for the application's performance.
Indeed, each execution of the query will result in a full table scan which is extremely time consuming.
Remediation
Try to use indexed columns in WHERE and HAVING clauses. If it is not possible, then create a secondary index for these columns.
Reference
Enhancing the Quality of ABAP Development
Meijs - Krouwels - Heuvelmans - Sommen
SAP Press
ISBN 1-59229-030-2
Related Technologies
PL/SQL
Microsoft T-SQL
Sybase T-SQL
Technical Criterion
CWE-1067 - Excessive Execution of Sequential Searches of Data Resource
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