The content discusses the concept of stationarity in time series analysis. Stationarity refers to a time series having a constant mean and variance over time. It is important for many time series models to have stationary data for accurate analysis. The content also mentions two statistical tests, the KPSS test and ADF test, which can be used to determine if a time series is stationary. Additionally, the function can detect trend-stationarity, which means that the time series fluctuates around a deterministic trend.
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SET SCHEMA DM_PAL;

DROP TABLE PAL_TEST_DATA_TBL;
CREATE COLUMN TABLE PAL_TEST_DATA_TBL (
	"TIME_STAMP" INTEGER,
	"SERIES" DOUBLE
);

INSERT INTO PAL_TEST_DATA_TBL VALUES (0, 0.0);
INSERT INTO PAL_TEST_DATA_TBL VALUES (1, 3.83);
INSERT INTO PAL_TEST_DATA_TBL VALUES (2, -5.33);
INSERT INTO PAL_TEST_DATA_TBL VALUES (3, -1.5);
INSERT INTO PAL_TEST_DATA_TBL VALUES (4, 2.33);
INSERT INTO PAL_TEST_DATA_TBL VALUES (5, -6.83);
INSERT INTO PAL_TEST_DATA_TBL VALUES (6, -3.0);
INSERT INTO PAL_TEST_DATA_TBL VALUES (7, 0.83);
INSERT INTO PAL_TEST_DATA_TBL VALUES (8, -8.33);
INSERT INTO PAL_TEST_DATA_TBL VALUES (9, -4.5);
INSERT INTO PAL_TEST_DATA_TBL VALUES (10, -0.67);
INSERT INTO PAL_TEST_DATA_TBL VALUES (11, -9.83);
INSERT INTO PAL_TEST_DATA_TBL VALUES (12, -6.0);
INSERT INTO PAL_TEST_DATA_TBL VALUES (13, -2.17);
INSERT INTO PAL_TEST_DATA_TBL VALUES (14, -11.33);
INSERT INTO PAL_TEST_DATA_TBL VALUES (15, -7.5);
INSERT INTO PAL_TEST_DATA_TBL VALUES (16, -3.67);
INSERT INTO PAL_TEST_DATA_TBL VALUES (17, -12.83);
INSERT INTO PAL_TEST_DATA_TBL VALUES (18, -9.0);
INSERT INTO PAL_TEST_DATA_TBL VALUES (19, -5.17);
INSERT INTO PAL_TEST_DATA_TBL VALUES (20, -14.33);
INSERT INTO PAL_TEST_DATA_TBL VALUES (21, -10.5);
INSERT INTO PAL_TEST_DATA_TBL VALUES (22, -6.67);
INSERT INTO PAL_TEST_DATA_TBL VALUES (23, -15.83);
INSERT INTO PAL_TEST_DATA_TBL VALUES (24, -15.83);
INSERT INTO PAL_TEST_DATA_TBL VALUES (25, -11.075);
INSERT INTO PAL_TEST_DATA_TBL VALUES (26, -12.891);
INSERT INTO PAL_TEST_DATA_TBL VALUES (27, -18.769);
INSERT INTO PAL_TEST_DATA_TBL VALUES (28, -20.585);
INSERT INTO PAL_TEST_DATA_TBL VALUES (29, -15.83);
INSERT INTO PAL_TEST_DATA_TBL VALUES (30, -11.075);
INSERT INTO PAL_TEST_DATA_TBL VALUES (31, -12.891);
INSERT INTO PAL_TEST_DATA_TBL VALUES (32, -18.769);
INSERT INTO PAL_TEST_DATA_TBL VALUES (33, -20.585);
INSERT INTO PAL_TEST_DATA_TBL VALUES (34, -15.83);
INSERT INTO PAL_TEST_DATA_TBL VALUES (35, -11.075);
INSERT INTO PAL_TEST_DATA_TBL VALUES (36, -12.891);
INSERT INTO PAL_TEST_DATA_TBL VALUES (37, -18.769);
INSERT INTO PAL_TEST_DATA_TBL VALUES (38, -20.585);
INSERT INTO PAL_TEST_DATA_TBL VALUES (39, -15.83);
INSERT INTO PAL_TEST_DATA_TBL VALUES (40, -11.075);
INSERT INTO PAL_TEST_DATA_TBL VALUES (41, -12.891);
INSERT INTO PAL_TEST_DATA_TBL VALUES (42, -18.769);
INSERT INTO PAL_TEST_DATA_TBL VALUES (43, -20.585);
INSERT INTO PAL_TEST_DATA_TBL VALUES (44, -15.83);
INSERT INTO PAL_TEST_DATA_TBL VALUES (45, -11.075);
INSERT INTO PAL_TEST_DATA_TBL VALUES (46, -12.891);
INSERT INTO PAL_TEST_DATA_TBL VALUES (47, -18.769);
INSERT INTO PAL_TEST_DATA_TBL VALUES (48, -20.585);
INSERT INTO PAL_TEST_DATA_TBL VALUES (49, -15.83);
INSERT INTO PAL_TEST_DATA_TBL VALUES (50, -11.075);
INSERT INTO PAL_TEST_DATA_TBL VALUES (51, -12.891);
INSERT INTO PAL_TEST_DATA_TBL VALUES (52, -18.769);
INSERT INTO PAL_TEST_DATA_TBL VALUES (53, -20.585);
INSERT INTO PAL_TEST_DATA_TBL VALUES (54, 20.585);
INSERT INTO PAL_TEST_DATA_TBL VALUES (55, 24.525);
INSERT INTO PAL_TEST_DATA_TBL VALUES (56, 25.52);
INSERT INTO PAL_TEST_DATA_TBL VALUES (57, 22.845);
INSERT INTO PAL_TEST_DATA_TBL VALUES (58, 18.536);
INSERT INTO PAL_TEST_DATA_TBL VALUES (59, 15.861);
INSERT INTO PAL_TEST_DATA_TBL VALUES (60, 16.856);
INSERT INTO PAL_TEST_DATA_TBL VALUES (61, 20.795);
INSERT INTO PAL_TEST_DATA_TBL VALUES (62, 24.735);
INSERT INTO PAL_TEST_DATA_TBL VALUES (63, 25.73);
INSERT INTO PAL_TEST_DATA_TBL VALUES (64, 23.055);
INSERT INTO PAL_TEST_DATA_TBL VALUES (65, 18.746);
INSERT INTO PAL_TEST_DATA_TBL VALUES (66, 16.071);
INSERT INTO PAL_TEST_DATA_TBL VALUES (67, 17.066);
INSERT INTO PAL_TEST_DATA_TBL VALUES (68, 21.005);
INSERT INTO PAL_TEST_DATA_TBL VALUES (69, 24.945);
INSERT INTO PAL_TEST_DATA_TBL VALUES (70, 25.94);
INSERT INTO PAL_TEST_DATA_TBL VALUES (71, 23.265);
INSERT INTO PAL_TEST_DATA_TBL VALUES (72, 18.956);
INSERT INTO PAL_TEST_DATA_TBL VALUES (73, 16.281);
INSERT INTO PAL_TEST_DATA_TBL VALUES (74, 17.276);
INSERT INTO PAL_TEST_DATA_TBL VALUES (75, 21.215);
INSERT INTO PAL_TEST_DATA_TBL VALUES (76, 25.155);
INSERT INTO PAL_TEST_DATA_TBL VALUES (77, 26.15);
INSERT INTO PAL_TEST_DATA_TBL VALUES (78, 23.475);
INSERT INTO PAL_TEST_DATA_TBL VALUES (79, 19.166);
INSERT INTO PAL_TEST_DATA_TBL VALUES (80, 16.491);
INSERT INTO PAL_TEST_DATA_TBL VALUES (81, 17.486);
INSERT INTO PAL_TEST_DATA_TBL VALUES (82, 21.425);
INSERT INTO PAL_TEST_DATA_TBL VALUES (83, 25.365);
INSERT INTO PAL_TEST_DATA_TBL VALUES (84, 26.36);
INSERT INTO PAL_TEST_DATA_TBL VALUES (85, 23.685);
INSERT INTO PAL_TEST_DATA_TBL VALUES (86, 19.376);
INSERT INTO PAL_TEST_DATA_TBL VALUES (87, 16.701);
INSERT INTO PAL_TEST_DATA_TBL VALUES (88, 17.696);


DROP TABLE PAL_PARAMETER_TBL;
CREATE COLUMN TABLE PAL_PARAMETER_TBL ( "NAME" VARCHAR (50),"INT_VALUE" INTEGER,"DOUBLE_VALUE" DOUBLE,"STRING_VALUE" VARCHAR (100));
INSERT INTO PAL_PARAMETER_TBL VALUES ('METHOD',         0, NULL, NULL);
INSERT INTO PAL_PARAMETER_TBL VALUES ('MODE',  		1, NULL, NULL);
INSERT INTO PAL_PARAMETER_TBL VALUES ('LAG',  		5, NULL, NULL);
INSERT INTO PAL_PARAMETER_TBL VALUES ('PROBABILITY', NULL, 0.95, NULL);

CALL _SYS_AFL.PAL_STATIONARITY_TEST(PAL_TEST_DATA_TBL, PAL_PARAMETER_TBL, ?);
