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drop table if exists t1,t2; SELECT 10,10.0,10.,.1e+2,100.0e-1; 10 10.0 10. .1e+2 100.0e-1 10 10.0 10 10 10 SELECT 6e-16, -6e-16, --6e-16, -6e-16+1.000000; 6e-16 -6e-16 --6e-16 -6e-16+1.000000 6e-16 -6e-16 6e-16 0.9999999999999994 SELECT 1e1,1.e1,1.0e1,1e+1,1.e+1,1.0e+1,1e-1,1.e-1,1.0e-1; 1e1 1.e1 1.0e1 1e+1 1.e+1 1.0e+1 1e-1 1.e-1 1.0e-1 10 10 10 10 10 10 0.1 0.1 0.1 SELECT 0.001e+1,0.001e-1, -0.001e+01,-0.001e-01; 0.001e+1 0.001e-1 -0.001e+01 -0.001e-01 0.01 0.0001 -0.01 -0.0001 SELECT 123.23E+02,-123.23E-02,"123.23E+02"+0.0,"-123.23E-02"+0.0; 123.23E+02 -123.23E-02 "123.23E+02"+0.0 "-123.23E-02"+0.0 12323 -1.2323 12323 -1.2323 SELECT 2147483647E+02,21474836.47E+06; 2147483647E+02 21474836.47E+06 214748364700 21474836470000 create table t1 (f1 float(24),f2 float(52)); show full columns from t1; Field Type Collation Null Key Default Extra Privileges Comment f1 float NULL YES NULL # f2 double NULL YES NULL # insert into t1 values(10,10),(1e+5,1e+5),(1234567890,1234567890),(1e+10,1e+10),(1e+15,1e+15),(1e+20,1e+20),(1e+50,1e+50),(1e+150,1e+150); Warnings: Warning 1264 Out of range value for column 'f1' at row 7 Warning 1264 Out of range value for column 'f1' at row 8 insert into t1 values(-10,-10),(1e-5,1e-5),(1e-10,1e-10),(1e-15,1e-15),(1e-20,1e-20),(1e-50,1e-50),(1e-150,1e-150); select * from t1; f1 f2 10 10 100000 100000 1234570000 1234567890 10000000000 10000000000 1e15 1e15 1e20 1e20 3.40282e38 1e50 3.40282e38 1e150 -10 -10 0.00001 0.00001 0.0000000001 0.0000000001 0.000000000000001 0.000000000000001 1e-20 1e-20 0 1e-50 0 1e-150 drop table t1; create table t1 (datum double); insert into t1 values (0.5),(1.0),(1.5),(2.0),(2.5); select * from t1; datum 0.5 1 1.5 2 2.5 select * from t1 where datum < 1.5; datum 0.5 1 select * from t1 where datum > 1.5; datum 2 2.5 select * from t1 where datum = 1.5; datum 1.5 drop table t1; create table t1 (a decimal(7,3) not null, key (a)); insert into t1 values ("0"),("-0.00"),("-0.01"),("-0.002"),("1"); select a from t1 order by a; a -0.010 -0.002 0.000 0.000 1.000 select min(a) from t1; min(a) -0.010 drop table t1; create table t1 (c1 double, c2 varchar(20)); insert t1 values (121,"16"); select c1 + c1 * (c2 / 100) as col from t1; col 140.36 create table t2 select c1 + c1 * (c2 / 100) as col1, round(c1, 5) as col2, round(c1, 35) as col3, sqrt(c1*1e-15) col4 from t1; select * from t2; col1 col2 col3 col4 140.36 121.00000 121 0.00000034785054261852176 show create table t2; Table Create Table t2 CREATE TABLE `t2` ( `col1` double DEFAULT NULL, `col2` double(22,5) DEFAULT NULL, `col3` double DEFAULT NULL, `col4` double DEFAULT NULL ) ENGINE=MyISAM DEFAULT CHARSET=latin1 drop table t1,t2; create table t1 (a float); insert into t1 values (1); select max(a),min(a),avg(a) from t1; max(a) min(a) avg(a) 1 1 1 drop table t1; create table t1 (f float, f2 float(24), f3 float(6,2), d double, d2 float(53), d3 double(10,3), de decimal, de2 decimal(6), de3 decimal(5,2), n numeric, n2 numeric(8), n3 numeric(7,6)); show full columns from t1; Field Type Collation Null Key Default Extra Privileges Comment f float NULL YES NULL # f2 float NULL YES NULL # f3 float(6,2) NULL YES NULL # d double NULL YES NULL # d2 double NULL YES NULL # d3 double(10,3) NULL YES NULL # de decimal(10,0) NULL YES NULL # de2 decimal(6,0) NULL YES NULL # de3 decimal(5,2) NULL YES NULL # n decimal(10,0) NULL YES NULL # n2 decimal(8,0) NULL YES NULL # n3 decimal(7,6) NULL YES NULL # drop table t1; create table t1 (a decimal(7,3) not null, key (a)); insert into t1 values ("0"),("-0.00"),("-0.01"),("-0.002"),("1"); select a from t1 order by a; a -0.010 -0.002 0.000 0.000 1.000 select min(a) from t1; min(a) -0.010 drop table t1; create table t1 (a float(200,100), b double(200,100)); ERROR 42000: Too big scale 100 specified for column 'a'. Maximum is 30. create table t1 (c20 char); insert into t1 values (5000.0); Warnings: Warning 1265 Data truncated for column 'c20' at row 1 insert into t1 values (0.5e4); Warnings: Warning 1265 Data truncated for column 'c20' at row 1 drop table t1; create table t1 (f float(54)); ERROR 42000: Incorrect column specifier for column 'f' drop table if exists t1; create table t1 (d1 double, d2 double unsigned); insert into t1 set d1 = -1.0; update t1 set d2 = d1; Warnings: Warning 1264 Out of range value for column 'd2' at row 1 select * from t1; d1 d2 -1 0 drop table t1; create table t1 (f float(4,3)); insert into t1 values (-11.0),(-11),("-11"),(11.0),(11),("11"); Warnings: Warning 1264 Out of range value for column 'f' at row 1 Warning 1264 Out of range value for column 'f' at row 2 Warning 1264 Out of range value for column 'f' at row 3 Warning 1264 Out of range value for column 'f' at row 4 Warning 1264 Out of range value for column 'f' at row 5 Warning 1264 Out of range value for column 'f' at row 6 select * from t1; f -9.999 -9.999 -9.999 9.999 9.999 9.999 drop table if exists t1; create table t1 (f double(4,3)); insert into t1 values (-11.0),(-11),("-11"),(11.0),(11),("11"); Warnings: Warning 1264 Out of range value for column 'f' at row 1 Warning 1264 Out of range value for column 'f' at row 2 Warning 1264 Out of range value for column 'f' at row 3 Warning 1264 Out of range value for column 'f' at row 4 Warning 1264 Out of range value for column 'f' at row 5 Warning 1264 Out of range value for column 'f' at row 6 select * from t1; f -9.999 -9.999 -9.999 9.999 9.999 9.999 drop table if exists t1; create table t1 (c char(20)); insert into t1 values (5e-28); select * from t1; c 5e-28 drop table t1; create table t1 (c char(6)); insert into t1 values (2e5),(2e6),(2e-4),(2e-5); select * from t1; c 200000 2e6 0.0002 2e-5 drop table t1; CREATE TABLE t1 ( reckey int unsigned NOT NULL, recdesc varchar(50) NOT NULL, PRIMARY KEY (reckey) ) ENGINE=MyISAM DEFAULT CHARSET=latin1; INSERT INTO t1 VALUES (108, 'Has 108 as key'); INSERT INTO t1 VALUES (109, 'Has 109 as key'); select * from t1 where reckey=108; reckey recdesc 108 Has 108 as key select * from t1 where reckey=1.08E2; reckey recdesc 108 Has 108 as key select * from t1 where reckey=109; reckey recdesc 109 Has 109 as key select * from t1 where reckey=1.09E2; reckey recdesc 109 Has 109 as key drop table t1; create table t1 (d double(10,1)); create table t2 (d double(10,9)); insert into t1 values ("100000000.0"); insert into t2 values ("1.23456780"); create table t3 select * from t2 union select * from t1; select * from t3; d 1.2345678 100000000 show create table t3; Table Create Table t3 CREATE TABLE `t3` ( `d` double DEFAULT NULL ) ENGINE=MyISAM DEFAULT CHARSET=latin1 drop table t1, t2, t3; create table t1 select 105213674794682365.00 + 0.0 x; show warnings; Level Code Message desc t1; Field Type Null Key Default Extra x decimal(21,2) NO 0.00 drop table t1; create table t1 select 0.0 x; desc t1; Field Type Null Key Default Extra x decimal(2,1) NO 0.0 create table t2 select 105213674794682365.00 y; desc t2; Field Type Null Key Default Extra y decimal(20,2) NO 0.00 create table t3 select x+y a from t1,t2; show warnings; Level Code Message desc t3; Field Type Null Key Default Extra a decimal(21,2) NO 0.00 drop table t1,t2,t3; select 1e-308, 1.00000001e-300, 100000000e-300; 1e-308 1.00000001e-300 100000000e-300 1e-308 1.00000001e-300 1e-292 select 10e307; 10e307 1e308 create table t1(a int, b double(8, 2)); insert into t1 values (1, 28.50), (1, 121.85), (1, 157.23), (1, 1351.00), (1, -1965.35), (1, 81.75), (1, 217.08), (1, 7.94), (4, 96.07), (4, 6404.65), (4, -6500.72), (2, 100.00), (5, 5.00), (5, -2104.80), (5, 2033.80), (5, 0.07), (5, 65.93), (3, -4986.24), (3, 5.00), (3, 4857.34), (3, 123.74), (3, 0.16), (6, -1695.31), (6, 1003.77), (6, 499.72), (6, 191.82); explain select sum(b) s from t1 group by a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 26 Using temporary; Using filesort select sum(b) s from t1 group by a; s 0.00 100.00 0.00 -0.00 -0.00 0.00 select sum(b) s from t1 group by a having s <> 0; s 100.00 select sum(b) s from t1 group by a having s <> 0 order by s; s 100.00 select sum(b) s from t1 group by a having s <=> 0; s 0.00 0.00 -0.00 -0.00 0.00 select sum(b) s from t1 group by a having s <=> 0 order by s; s -0.00 -0.00 0.00 0.00 0.00 alter table t1 add key (a, b); explain select sum(b) s from t1 group by a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index a a 14 NULL 26 Using index select sum(b) s from t1 group by a; s 0.00 100.00 0.00 -0.00 0.00 0.00 select sum(b) s from t1 group by a having s <> 0; s 100.00 select sum(b) s from t1 group by a having s <> 0 order by s; s 100.00 select sum(b) s from t1 group by a having s <=> 0; s 0.00 0.00 -0.00 0.00 0.00 select sum(b) s from t1 group by a having s <=> 0 order by s; s -0.00 0.00 0.00 0.00 0.00 drop table t1; End of 4.1 tests create table t1 (s1 float(0,2)); ERROR 42000: For float(M,D), double(M,D) or decimal(M,D), M must be >= D (column 's1'). create table t1 (s1 float(1,2)); ERROR 42000: For float(M,D), double(M,D) or decimal(M,D), M must be >= D (column 's1'). CREATE TABLE t1 ( f1 real zerofill, f2 double zerofill, f3 float zerofill); INSERT INTO t1 VALUES ( 0.314152e+1, 0.314152e+1, 0.314152e+1); PREPARE stmt1 FROM 'select f1, f2, f3 FROM t1'; select f1, f2, f3 FROM t1; f1 f2 f3 0000000000000003.14152 0000000000000003.14152 000003.14152 select f1, f2, f3 FROM t1; f1 f2 f3 0000000000000003.14152 0000000000000003.14152 000003.14152 EXECUTE stmt1; f1 f2 f3 0000000000000003.14152 0000000000000003.14152 000003.14152 DROP TABLE t1; create table t1 (f1 double(200, 0)); insert into t1 values (1e199), (-1e199); insert into t1 values (1e200), (-1e200); insert into t1 values (2e200), (-2e200); Warnings: Warning 1264 Out of range value for column 'f1' at row 1 Warning 1264 Out of range value for column 'f1' at row 2 select f1 + 0e0 from t1; f1 + 0e0 1e199 -1e199 1e200 -1e200 1e200 -1e200 drop table t1; create table t1 (f1 float(30, 0)); insert into t1 values (1e29), (-1e29); insert into t1 values (1e30), (-1e30); insert into t1 values (2e30), (-2e30); Warnings: Warning 1264 Out of range value for column 'f1' at row 1 Warning 1264 Out of range value for column 'f1' at row 2 select f1 + 0e0 from t1; f1 + 0e0 1.0000000150474662e29 -1.0000000150474662e29 1.0000000150474662e30 -1.0000000150474662e30 1.0000000150474662e30 -1.0000000150474662e30 drop table t1; create table t1 (c char(6)); insert into t1 values (2e6),(2e-5); select * from t1; c 2e6 2e-5 drop table t1; CREATE TABLE d1 (d DOUBLE); INSERT INTO d1 VALUES (1.7976931348623157E+308); SELECT * FROM d1; d 1.7976931348623157e308 INSERT INTO d1 VALUES (1.79769313486232e+308); ERROR 22007: Illegal double '1.79769313486232e+308' value found during parsing SELECT * FROM d1; d 1.7976931348623157e308 DROP TABLE d1; create table t1 (a char(20)); insert into t1 values (1.225e-05); select a+0 from t1; a+0 0.00001225 drop table t1; create table t1(d double, u bigint unsigned); insert into t1(d) values (9.22337203685479e18), (1.84e19); update t1 set u = d; select u from t1; u 9223372036854790144 18400000000000000000 drop table t1; CREATE TABLE t1 (f1 DOUBLE); INSERT INTO t1 VALUES(-1.79769313486231e+308); SELECT f1 FROM t1; f1 -1.79769313486231e308 DROP TABLE t1; # # Bug#12406055 BUFFER OVERFLOW OF VARIABLE 'BUFF' IN STRING::SET_REAL # # Ignoring output from misc. float operations select format(-1.7976931348623157E+307,256) as foo; select least(-1.1111111111111111111111111, - group_concat(1.7976931348623157E+308)) as foo; select concat((truncate((-1.7976931348623157E+307),(0x1e))), (99999999999999999999999999999999999999999999999999999999999999999)) into @a; End of 5.0 tests # # Bug#12368853 FORMAT() CRASHES WITH LARGE NUMBERS AFTER TRUNCATE... # select format(truncate('1.7976931348623157E+308',-12),1,'fr_BE') as foo; foo 0 # # Bug #13500371 63704: CONVERSION OF '1.' TO A NUMBER GIVES ERROR 1265 # (WARN_DATA_TRUNCATED) # CREATE TABLE t1 (f FLOAT); INSERT INTO t1 VALUES ('1.'); INSERT INTO t1 VALUES ('2.0.'); Warnings: Warning 1265 Data truncated for column 'f' at row 1 INSERT INTO t1 VALUES ('.'); Warnings: Warning 1265 Data truncated for column 'f' at row 1 SELECT * FROM t1 ORDER BY f; f 0 1 2 DROP TABLE t1;