HANA SQL & Performance

What the HANA SQL & Performance Assistant covers

SAP HANA's in-memory column store requires a different approach to SQL and performance optimization. Get expert guidance on writing efficient queries and diagnosing performance issues.

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Optimized SQL

Write HANA-optimized SQL queries that leverage column store performance. Avoid row-by-row processing anti-patterns.

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Calculation Views

Design and optimize SAP HANA Calculation Views with graphical and scripted approaches.

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Performance Analysis

Diagnose slow queries using SQL Analyzer, Plan Visualizer, and HANA monitoring tools.

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Column Store Concepts

Understand compression, partitioning, indexes, and memory management in SAP HANA.

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Query Tuning

Rewrite slow SQL with hints, joins optimization, aggregation pushdown, and proper use of HANA functions.

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CDS & ABAP Integration

Combine HANA SQL knowledge with CDS Views and ABAP Open SQL for full-stack performance.

Example: Example: HANA SQL Optimization

Describe your performance issue and get an optimized query with explanation.

-- User: "Optimize this slow query joining EKKO and EKPO for large datasets"

-- BEFORE (slow - avoid SELECT * and unnecessary columns):
SELECT * FROM ekko JOIN ekpo ON ekko.ebeln = ekpo.ebeln
WHERE ekko.bedat > '20240101';

-- AFTER (HANA-optimized):
SELECT
  h.ebeln, h.lifnr, h.bedat,
  i.ebelp, i.matnr, i.menge, i.netpr
FROM ekko AS h
INNER JOIN ekpo AS i ON h.ebeln = i.ebeln
WHERE h.bedat > '20240101'
  AND h.loekz = ''       -- filter deleted headers early
  AND i.loekz = ''       -- filter deleted items early
ORDER BY h.bedat DESC
LIMIT 1000;            -- always limit result sets

-- Check execution plan: F8 in HANA Studio or SQL Analyzer in Web IDE

Common Questions to Ask

"How to find the slowest queries in SAP HANA using monitoring views?"

"What is the difference between row store and column store in HANA?"

"How to create a partitioned table in SAP HANA for better performance?"

"Optimize a Calculation View that is running slowly in HANA Studio"

"How to use HANA SQL hints like NO_JOIN_THRU_INDEX or HASH_JOIN?"

"Explain SAP HANA memory management and how to check memory usage"

Frequently Asked Questions

Does this cover both HANA on-premise and HANA Cloud?

Yes — covers SAP HANA on-premise (1.0 and 2.0) and SAP HANA Cloud with their respective differences.

Can I paste slow queries and get them optimized?

Yes — share your SQL and the AI will analyze it and provide an optimized version with explanation.