-- *************testing built-in type float4 **************** CREATE TABLE FLOAT4_TBL (f1 float4); INSERT INTO FLOAT4_TBL(f1) VALUES ('0.0'); INSERT INTO FLOAT4_TBL(f1) VALUES ('1004.30'); INSERT INTO FLOAT4_TBL(f1) VALUES ('-34.84'); INSERT INTO FLOAT4_TBL(f1) VALUES ('1.2345678901234e+20'); INSERT INTO FLOAT4_TBL(f1) VALUES ('1.2345678901234e-20'); -- test for over and under flow INSERT INTO FLOAT4_TBL(f1) VALUES ('10e40'); INSERT INTO FLOAT4_TBL(f1) VALUES ('-10e40'); INSERT INTO FLOAT4_TBL(f1) VALUES ('10e-40'); INSERT INTO FLOAT4_TBL(f1) VALUES ('-10e-40'); SELECT '' AS five, FLOAT4_TBL.*; SELECT '' AS four, f.* FROM FLOAT4_TBL f WHERE f.f1 <> '1004.3'; SELECT '' AS one, f.* FROM FLOAT4_TBL f WHERE f.f1 = '1004.3'; SELECT '' AS three, f.* FROM FLOAT4_TBL f WHERE '1004.3' > f.f1; SELECT '' AS three, f.* FROM FLOAT4_TBL f WHERE f.f1 < '1004.3'; SELECT '' AS four, f.* FROM FLOAT4_TBL f WHERE '1004.3' >= f.f1; SELECT '' AS four, f.* FROM FLOAT4_TBL f WHERE f.f1 <= '1004.3'; SELECT '' AS three, f.f1, f.f1 * '-10' AS x FROM FLOAT4_TBL f WHERE f.f1 > '0.0'; SELECT '' AS three, f.f1, f.f1 + '-10' AS x FROM FLOAT4_TBL f WHERE f.f1 > '0.0'; SELECT '' AS three, f.f1, f.f1 / '-10' AS x FROM FLOAT4_TBL f WHERE f.f1 > '0.0'; SELECT '' AS three, f.f1, f.f1 - '-10' AS x FROM FLOAT4_TBL f WHERE f.f1 > '0.0'; -- test divide by zero SELECT '' AS bad, f.f1 / '0.0' from FLOAT4_TBL f; SELECT '' AS five, FLOAT4_TBL.*; -- test the unary float4abs operator SELECT '' AS five, f.f1, @f.f1 AS abs_f1 FROM FLOAT4_TBL f; UPDATE FLOAT4_TBL SET f1 = FLOAT4_TBL.f1 * '-1' WHERE FLOAT4_TBL.f1 > '0.0'; SELECT '' AS five, FLOAT4_TBL.*; DROP TABLE FLOAT4_TBL;