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Developers, your complete guide to SQLScript programming for SAP HANA is here! Get hands-on with the SQLScript language, understand the data types you´ll work with, and master the function library. Learn to implement SAP HANA database procedures and functions using imperative and declarative SQLScript. See how SQLScript plays with ABAP, SAP BW on SAP HANA, and SAP BW/4HANA. Finally, optimize, troubleshoot, and analyze your SQLScript programs.

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... Introduction ... 15

... Structure of the Book ... 18

... Acknowledgments ... 20

1 ... SAP HANA ... 23

1.1 ... What Is SAP HANA? ... 24

1.2 ... System Architecture ... 32

1.3 ... Organizing Database Objects ... 36

1.4 ... Development Environments ... 40

1.5 ... The SQL Console ... 50

2 ... Getting Started with SQLScript ... 55

2.1 ... SQL Versus SQLScript ... 56

2.2 ... Basic Language Elements ... 59

2.3 ... Modularization and Logical Containers ... 78

2.4 ... Sample Program ... 94

3 ... Declarative Programming in SQLScript ... 109

3.1 ... Table Variables ... 110

3.2 ... SELECT Statements ... 112

3.3 ... Other Operators ... 160

4 ... Data Types and Their Processing ... 165

4.1 ... Character Strings ... 166

4.2 ... Date and Time ... 185

4.3 ... Numerical Data ... 201

4.4 ... Binary Data Types ... 213

4.5 ... Conversions Between Data Types ... 218

5 ... Write Access to the Database ... 221

5.1 ... INSERT ... 222

5.2 ... UPDATE ... 226

5.3 ... UPSERT or REPLACE ... 227

5.4 ... MERGE INTO ... 229

5.5 ... DELETE ... 232

5.6 ... TRUNCATE TABLE ... 232

6 ... Imperative Programming ... 233

6.1 ... Variables ... 233

6.2 ... Flow Control Using IF and ELSE ... 249

6.3 ... Loops ... 253

6.4 ... Cursors ... 256

6.5 ... Arrays ... 260

6.6 ... Transaction Control ... 268

6.7 ... Executing Dynamic SQL ... 271

6.8 ... Error Handling ... 276

7 ... Creating, Deleting, and Editing Database Objects ... 283

7.1 ... Tables ... 284

7.2 ... Table Types ... 291

7.3 ... Views ... 291

7.4 ... Sequences ... 294

7.5 ... Triggers ... 296

8 ... SQLScript in ABAP Programs ... 301

8.1 ... AMDP Procedures ... 304

8.2 ... CDS Table Functions ... 319

8.3 ... AMDP Functions for AMDP Methods ... 327

8.4 ... Alternatives to AMDPs for Calling SQLScript Code from ABAP Programs ... 329

8.5 ... Recommendations ... 330

9 ... SQLScript in SAP Business Warehouse ... 333

9.1 ... Transformation Routines as AMDP ... 338

9.2 ... Successive Transformations and Mixed Execution ... 339

9.3 ... The Generated AMDP Classes ... 341

9.4 ... The Individual Routines ... 348

9.5 ... Error Processing and Error Stack ... 352

10 ... Clean SQLScript Code ... 357

10.1 ... The Readability of the Code ... 358

10.2 ... Performance Recommendations ... 373

11 ... Tests, Errors, and Performance Analysis ... 375

11.1 ... Testing SQLScript Code ... 376

11.2 ... The Debugger for SQLScript ... 381

11.3 ... Performance Analysis ... 397

... Appendices ... 417

A ... Data Model for Task Management ... 419

B ... List of Abbreviations ... 423

C ... The Author ... 425

... Index ... 427

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Brandeis, Jörg
Jörg Brandeis is an independent consultant and developer with a focus on SAP BW for HANA and SAP BW/4HANA. Until mid-2015 he was a development manager for ABAP at zetVisions AG in Heidelberg. He developed and conducted a workshop on SAP HANA development and SQLScript and is experienced in training ABAP developers to use SQLScript.

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