6.3Redirecting
Redirecting options enable reading data from the cursor in use, a (text, binary, or Excel) file, or memory (i.e. a user-defined variable), and writing it into an HDF5 userblock, dataset, or attribute through a CREATE FILE, CREATE DATASET, CREATE ATTRIBUTE, INSERT, or SET USERBLOCK operation. They also enable writing result sets (i.e. data) returned by DATA QUERY LANGUAGE (DQL) and DATA INTROSPECTION LANGUAGE (DIL) operations into the cursor in use, an HDF5 object (i.e. dataset or attribute), a (text, binary, or Excel) file, or memory (i.e. a user-defined variable). The next subsections describe the redirecting options provided by HDFql.
| Redirecting Option | Description |
|---|---|
| FROM | Read data from the cursor in use, a (text, binary, or Excel) file, or memory (i.e. a user-defined variable), and write it into an HDF5 userblock, dataset, or attribute |
| INTO | Write result sets (i.e. data) into the cursor in use, an HDF5 object (i.e. dataset or attribute), a (text, binary, or Excel) file, or memory (i.e. a user-defined variable) |
Table 6.5 – HDFql redirecting options