HEIDENHAIN TNC 620 User Manual page 37

9.9 Accessing tables with SQL commands............................................................................................ 333
Introduction........................................................................................................................................... 333
A transaction......................................................................................................................................... 334
Programming SQL commands..............................................................................................................336
Overview of the soft keys.................................................................................................................... 336
SQL BIND..............................................................................................................................................337
SQL SELECT......................................................................................................................................... 338
SQL FETCH........................................................................................................................................... 340
SQL UPDATE.........................................................................................................................................341
SQL INSERT.......................................................................................................................................... 341
SQL COMMIT....................................................................................................................................... 342
SQL ROLLBACK.................................................................................................................................... 342
9.10 Entering formulas directly.................................................................................................................. 343
Entering formulas.................................................................................................................................. 343
Rules for formulas.................................................................................................................................345
Example of entry...................................................................................................................................346
9.11 String parameters............................................................................................................................... 347
String processing functions.................................................................................................................. 347
Assigning string parameters................................................................................................................. 348
Chain-linking string parameters.............................................................................................................348
Converting a numerical value to a string parameter.............................................................................349
Copying a substring from a string parameter.......................................................................................350
Converting a string parameter to a numerical value.............................................................................351
Checking a string parameter.................................................................................................................352
Finding the length of a string parameter..............................................................................................353
Comparing alphabetic sequence...........................................................................................................354
Reading out machine parameters......................................................................................................... 355
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015
37