mysql> insert into decimal_tb (col2) values (12.2300); Query OK, 1 row affected (0.01 sec) # 变量范围测试 # 结论:M范围是1到65,D范围是0到30,且D不大于M mysql> alter table decimal_tb add column col3 decimal(6,6); Query OK, 0 rows affected (0.12 sec) Records: 0 Duplicates: 0 ...
1rowaffected(0.01sec)mysql>insert intodecimal_tb(col2)values(10.2);QueryOK,1rowaffected(0.01sec)mysql>insert intodecimal_tb(col2)values(09.9);QueryOK,1rowaffected(0.01sec)mysql>select*from decimal_tb;+---+---+|col1|col2|+---+-
INSERT INTO test_order(description,cost) VALUES('test', -100.11); 提示: [SQL]INSERT INTO test_order(description,cost) VALUES('test', -100.11) [Err] 1264 - Out of range value for column 'cost' at row 1 1. 2. 3. 4. 5. 6. 7. 其它插入测试结论: 当数值在其取值范围之内,小数位多...
MySQL storesDECIMALvalues in binary format. SeeSection 12.21, “Precision Math”. In aDECIMALcolumn declaration, the precision and scale can be (and usually is) specified. For example: salaryDECIMAL(5,2) In this example,5is the precision and2is the scale. The precision represents the number ...
mysql>insertintodecimal_tb (col2)values(12.2300); Query OK,1rowaffected (0.01sec) # 变量范围测试 # 结论:M范围是1到65,D范围是0到30,且D不大于M mysql>altertabledecimal_tbaddcolumncol3decimal(6,6); Query OK,0rowsaffected (0.12sec) ...
mysql>create tablef2(f1float(15,2));QueryOK,0rowsaffected(0.01sec)mysql>insert into f2values(123456789.39);QueryOK,1rowaffected(0.00sec)mysql>select*from f2;+---+|f1|+---+|123456792.00|+---+1rowinset(0.00sec) 最后你会发现,连整数都不准了,小数被完全抹去了。
VALUES ('Bicycle', 500.34), ('Seat', 10.23), ('Break', 5.21); 第三步,从test_order表查询数据。 SELECT* fromtest_order 第四步,更改cost列以包含ZEROFILL属性。 ALTER TABLE test_order MODIFY COLUMN cost DECIMAL(19, 4) ZEROFILL; 第五步,再次查询test_order表。
mysql>insertintodecimal_tb(col1,col2)values(100,100);Query OK,1rowaffected(0.05sec)mysql>insertintodecimal_tb(col2)values(1.23);Query OK,1rowaffected(0.01sec)mysql>insertintodecimal_tb(col2)values(10.2);Query OK,1rowaffected(0.01sec)mysql>insertintodecimal_tb(col2)values(09.9);Query OK,1...
MySQL storesDECIMALvalues in binary format. SeeSection 14.24, “Precision Math”. In aDECIMALcolumn declaration, the precision and scale can be (and usually is) specified. For example: salaryDECIMAL(5,2) In this example,5is the precision and2is the scale. The precision represents the number ...
mysql> create table temp2(id float(10,2),id2 double(10,2),id3 decimal(10,2)); Query OK, 0 rows affected (0.18 sec) mysql> insert into temp2 values(1234567.21, 1234567.21,1234567.21),(9876543.21, -> 9876543.12, 9876543.12); Query OK, 2 rows affected (0.06 sec) ...