HEIDENHAIN TNC 620 User Manual page 28

Contents
8.9 Accessing tables with SQL commands............................................................................................. 273
Introduction.............................................................................................................................................273
A transaction.......................................................................................................................................... 274
Programming SQL commands...............................................................................................................276
Overview of the soft keys..................................................................................................................... 276
SQL BIND...............................................................................................................................................277
SQL SELECT.......................................................................................................................................... 278
SQL FETCH............................................................................................................................................ 280
SQL UPDATE..........................................................................................................................................281
SQL INSERT........................................................................................................................................... 281
SQL COMMIT........................................................................................................................................ 282
SQL ROLLBACK..................................................................................................................................... 282
8.10 Entering formulas directly................................................................................................................... 283
Entering formulas................................................................................................................................... 283
Rules for formulas..................................................................................................................................285
Programming example........................................................................................................................... 286
8.11 String parameters................................................................................................................................ 287
String processing functions................................................................................................................... 287
Assigning string parameters.................................................................................................................. 288
Chain-linking string parameters..............................................................................................................288
Converting a numerical value to a string parameter..............................................................................289
Copying a substring from a string parameter........................................................................................290
Converting a string parameter to a numerical value..............................................................................291
Checking a string parameter.................................................................................................................. 292
Finding the length of a string parameter...............................................................................................293
Comparing alphabetic sequence............................................................................................................ 294
Reading machine parameters.................................................................................................................295
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TNC 620 | User's Manual
HEIDENHAIN Conversational Programming | 5/2013