C++ language simple table function conversion

The code from the C++ language scalar function can be reused as a simple table function by making minor modifications to the registration.

Code

The code is the same as found in the C++ language scalar function section.

Compilation

Compilation is the same as the one performed in local or remote modes.

$NZ_EXPORT_DIR/ae/utilities/bin/compile_ae --language cpp --template compile \
--exe applyopcpp --compargs "-g -Wall" --linkargs "-g" applyopcpp.cpp \
--version 3

Registration

Register the executables by using the modified command, which changes --template and --return to be appropriate for a table function:

$NZ_EXPORT_DIR/ae/utilities/bin/register_ae \
--sig "tapplyop_cpp(VARARGS)" \
--return "table(d double)" --language cpp --template udtf \
--exe applyopcpp --version 3

Running

The AE can now be run in SQL:

SELECT * FROM TABLE WITH FINAL(tapplyop_cpp('+',1,2));
D
---
3
(1 row)
SELECT * FROM TABLE WITH FINAL(tapplyop_cpp('+',1,2,3,4));
D
---
10
(1 row)