Re: ESQL/C vs. SQLDA

Stefan Weideneder wrote: > > steve53@earthlink.net wrote: > >[SNIPPED] > be carefull when using the old fashioned DESCRIBE method. There > is no need to do another DESCRIBE after a PREPARE. But Informix > tells you, that you must free the memory by yourself. So never True. But this refers to the memory added to point to your data elements, not the structure itself. > forget to free the memory Informix allocated. Don't use the > EXEC SQL FREE statement, use the C-function > > free((char*)sqldapointer) That's just WRONG Stefan. Among other things it does not free any of the memory attached to the substructure pointers, like the variable definition blocks. In addition there are several data structures internal to the ESQL library and in the engine to which you are connected that need to be freed. Only the SQL FREE statement can do for you. Definitely walk through the structure freeing anything that you have allocated yourself then ABSOLUTELY do EXEC SQL FREE! Art S. Kagel