The JQLCOMPILE function compiles a jQL statement.
NOTE: This function is only available in jBASE 4.1 and later.
JQLCOMPILE(Statement, Command, Options, Messages)
Statement is the variable, which will receive the compiled statement, used by a majority of functions to execute and work on the result set etc.
Command is the actual jQL query that you want to compile (such as SELECT or something similar).
Use RETRIEVE to obtain data records as the verb rather than an existing jQL verb. This will ensure that the right options are set internally. In addition, use any word that is not a jQL reserved word as the verb and it will work in the same way as RETRIEVE: implement a PLOT command that passes the entire command line into JQLCOMPILE and the results will be the same as if the first word were replaced with RETRIEVE.
Option: you must specify JQLOPT_USE_SELECT to supply a select list to the JQLEXECUTE function; the compile builds a different execution plan if using select lists.
Messages: If the statement fails to compile, this dynamic array is in the STOP format, therefore STOP messages can be programmed and printed. Provides a history of compilation for troubleshooting purposes; Returns -1 if there is a problem found in the statement and 0 for no problem