SAP HANA Predictive Analysis Library (PAL)

Table Column Column Data Type Description Constraint
2nd column Integer or double Value A i
●
●
●
●
A 0 : intercept
A 1 : beta coefficient
for X 1
A 2 : beta coefficient
for X 2
…
Fitted Data 1st column Integer, bigint, varchar,
or nvarchar
ID
2nd column Integer or double Value Y i
Significance 1st column Varchar or nvarchar Name (R^2 / F)
2nd column Double Value
PMML Result 1st column Integer ID
2nd column
CLOB, varchar, or
nvarchar
Logarithmic regression
model in PMML
format
Example
Assume that:
●
●
●
DM_PAL is a schema belonging to USER1; and
USER1 has been assigned the AFLPM_CREATOR_ERASER_EXECUTE role; and
USER1 has been assigned the AFL__SYS_AFL_AFLPAL_EXECUTE or
AFL__SYS_AFL_AFLPAL_EXECUTE_WITH_GRANT_OPTION role.
SET SCHEMA DM_PAL;
DROP TYPE PAL_NLR_DATA_T;
CREATE TYPE PAL_NLR_DATA_T AS TABLE( "ID" INT,"Y" DOUBLE,"X1" DOUBLE);
DROP TYPE PAL_NLR_RESULT_T;
CREATE TYPE PAL_NLR_RESULT_T AS TABLE("ID" INT,"Ai" DOUBLE);
DROP TYPE PAL_NLR_FITTED_T;
CREATE TYPE PAL_NLR_FITTED_T AS TABLE("ID" INT,"Fitted" DOUBLE);
DROP TYPE PAL_NLR_SIGNIFICANCE_T;
CREATE TYPE PAL_NLR_SIGNIFICANCE_T AS TABLE("NAME" varchar(50),"VALUE" DOUBLE);
DROP TYPE PAL_CONTROL_T;
CREATE TYPE PAL_CONTROL_T AS TABLE("NAME" VARCHAR(100), "INTARGS" INT,
"DOUBLEARGS" DOUBLE,"STRINGARGS" VARCHAR(100));
DROP TYPE PAL_NLR_PMMLMODEL_T;
CREATE TYPE PAL_NLR_PMMLMODEL_T AS TABLE("ID" INT,"Model" varchar(5000));
DROP table PAL_NLR_PDATA_TBL;
CREATE column table PAL_NLR_PDATA_TBL("POSITION" INT, "SCHEMA_NAME"
NVARCHAR(256), "TYPE_NAME" NVARCHAR(256), "PARAMETER_TYPE" VARCHAR(7));
insert into PAL_NLR_PDATA_TBL values (1,'DM_PAL','PAL_NLR_DATA_T','IN');
insert into PAL_NLR_PDATA_TBL values (2,'DM_PAL','PAL_CONTROL_T','IN');
insert into PAL_NLR_PDATA_TBL values (3,'DM_PAL','PAL_NLR_RESULT_T','OUT');
insert into PAL_NLR_PDATA_TBL values (4,'DM_PAL','PAL_NLR_FITTED_T','OUT');
insert into PAL_NLR_PDATA_TBL values (5,'DM_PAL','PAL_NLR_SIGNIFICANCE_T','OUT');
insert into PAL_NLR_PDATA_TBL values (6,'DM_PAL','PAL_NLR_PMMLMODEL_T','OUT');
CALL SYS.AFLLANG_WRAPPER_PROCEDURE_DROP('DM_PAL','PAL_LNR_PROC');
CALL
SYS.AFLLANG_WRAPPER_PROCEDURE_CREATE('AFLPAL','LNREGRESSION','DM_PAL','PAL_LNR_PR
OC',PAL_NLR_PDATA_TBL);
DROP TABLE #PAL_CONTROL_TBL;
252 P U B L I C
SAP HANA Predictive Analysis Library (PAL)
PAL Functions