SAP HANA Predictive Analysis Library (PAL)

---- calculate net present value of investment ----
DROP TABLE NPV;
CREATE COLUMN TABLE NPV(NPVALUE DOUBLE);
INSERT INTO NPV SELECT PAL_CASHFLOW_YEAR1.CASH +
PAL_CASHFLOW_YEAR2.CASH/1.05 +
PAL_CASHFLOW_YEAR3.CASH/POWER(1.05,2) +
PAL_CASHFLOW_YEAR4.CASH/POWER(1.05,3) +
PAL_CASHFLOW_YEAR5.CASH/POWER(1.05,4)
FROM PAL_CASHFLOW_YEAR1 left join
PAL_CASHFLOW_YEAR2 on PAL_CASHFLOW_YEAR1.ID =
PAL_CASHFLOW_YEAR2.ID
left join PAL_CASHFLOW_YEAR3 on PAL_CASHFLOW_YEAR1.ID
= PAL_CASHFLOW_YEAR3.ID
left join PAL_CASHFLOW_YEAR4 on PAL_CASHFLOW_YEAR1.ID
= PAL_CASHFLOW_YEAR4.ID
left join PAL_CASHFLOW_YEAR5 on PAL_CASHFLOW_YEAR1.ID
= PAL_CASHFLOW_YEAR5.ID;
SELECT * FROM NPV;
The expected result is as follows:
Step 3
Plot the distribution of the net present value of the investment and run Distribution Fitting to fit a normal
distribution to the NPV of the investment as. (The Central Limit theorem states that the output distribution will
be a normal distribution.)
---------------------------------------
------- distribution fit process ---
---------------------------------------
DROP TYPE PAL_DISTRFIT_DATA_T;
CREATE TYPE PAL_DISTRFIT_DATA_T AS TABLE(NPVALUE DOUBLE);
DROP TYPE PAL_DISTRFIT_ESTIMATION_T;
CREATE TYPE PAL_DISTRFIT_ESTIMATION_T AS TABLE(NAME VARCHAR(50),VAL VARCHAR(50));
DROP TYPE PAL_DISTRFIT_STATISTICS_T;
CREATE TYPE PAL_DISTRFIT_STATISTICS_T AS TABLE(NAME VARCHAR(50),VAL DOUBLE);
DROP TYPE PAL_CONTROL_T;
CREATE TYPE PAL_CONTROL_T AS TABLE(NAME VARCHAR (50),INTARGS INTEGER,DOUBLEARGS
DOUBLE,STRINGARGS VARCHAR (100));
DROP TABLE PDATA_TBL;
CREATE COLUMN TABLE PDATA_TBL("POSITION" INT, "SCHEMA_NAME" NVARCHAR(256),
"TYPE_NAME" NVARCHAR(256), "PARAMETER_TYPE" VARCHAR(7));
INSERT INTO PDATA_TBL VALUES (1, 'DM_PAL','PAL_DISTRFIT_DATA_T', 'IN');
INSERT INTO PDATA_TBL VALUES (2, 'DM_PAL','PAL_CONTROL_T', 'IN');
INSERT INTO PDATA_TBL VALUES (3, 'DM_PAL','PAL_DISTRFIT_ESTIMATION_T', 'OUT');
INSERT INTO PDATA_TBL VALUES (4, 'DM_PAL','PAL_DISTRFIT_STATISTICS_T', 'OUT');
call SYS.AFLLANG_WRAPPER_PROCEDURE_DROP('DM_PAL','PAL_DISTRFIT');
call SYS.AFLLANG_WRAPPER_PROCEDURE_CREATE('AFLPAL', 'DISTRFIT',
'DM_PAL','PAL_DISTRFIT', PDATA_TBL);
DROP TABLE PAL_CONTROL_TBL;
SAP HANA Predictive Analysis Library (PAL)
End-to-End Scenarios P U B L I C 563