Compute Result Column Information

These functions can be called after dbnextrow or dbgetrow returns a compute ID.

Function	Description
dbadlen	Returns the actual length of a compute column's data. This function is often used together with dbadata. The value returned by dbadlen can differ for each compute row read by dbnextrow.
dbaltcolid	Returns the column ID for a compute column.
dbaltlen	Returns the maximum length for a compute column's data.
dbaltop	Returns the type of aggregate operator for a compute column.
dbalttype	Returns the data type for a compute column.
dbaltutype	Returns the user-defined data type for a compute column.
dbbylist	Returns the bylist for a compute row.
dbnumalts	Returns the number of columns in a compute row.
dbnumcompute	Returns the number of COMPUTE clauses in the current set of results.