第一反应是用Byte(属于numeric),没有问题。但是用keyword是否可以呢? numeric除了支持等值精确查询,还可以范围查询。但是大部分情况下我们业务场景对于订单状态的使用都是精确查询的,不会有大于某个状态或者小于某个状态这样的情况。 所以刚才说的订单状态的场景,用keyword和numeric肯定都可以满足。但是那种方案好呢?答案...
标准SQL要求salary列能够用5位整数位和两位小数保存任何值。因此,在这种情况下可以保存在salary列的值的范围是从-999.99到999.99。 在标准SQL中,语法DECIMAL(M)等价于DECIMAL(M,0)。同样,语法NUMERIC(M)等价于NUMERIC(M,0),可以通过计算 确定M的值。 在MySQL 5.1中支持DECIMAL和NUMERIC数据类型的变量形式。M默认值...
If your SQL query is not returning the result-set in the order you are expecting, this article may be helpful to fix the issue. Background We all know that the ORDER BY keyword is used to sort a result-set by a specified column. It works great for most of the cases. But, for alp...
I would like to run a query that returns all rows where this field contains a non-numeric value (not including nulls). In COBOL, I'd use the keywords NOT NUMERIC to check for this. Is there an SQL function or keyword that is equivalent? Sort by date Sort by votes Aug 20, 2002 #...
No support for roles so it is difficult in maintaining privileges for many users(不支持角色,因此很难为许多用户维护权限) Stored procedures are not cacheable(存储过程不可缓存) Tables used for the procedure or trigger are always pre-locked(用于程序或触发器的表始终是预先锁定的) ...
A number with the data type p that has more decimal places than places can raise exceptions when converted to external formats such as data types of the database in Open SQL or in serializations to asXML.The built-in types in ABAP Dictionary mapped to the data type p cannot have more ...
greater than the number of digits; otherwise the decimal separator might be outside the sequence of digits. A packed number that has more decimal places than places can raise exceptions when converted to external formats such as data types of the database inOpen SQLor in serializations toas...
Script Component: Keyword not supported: 'provider' Script Task - Console.writeline alternative Script Task - convert excel to txt Script Task - Ignore Exception and Continue Execution Script task does not work after deployment but with no errors Script Task Error :"XML parsing failed. Whitespace ...
Now, we will see how the QUOTED_IDENTIFIER setting work. If you try to create the below table, using the UPDATE reserved keyword as a table name and the UNIQUE and CREATE reserved keywords as column names, after setting the QUOTED_IDENTIFIER option to OFF: ...
[cc lang=”sql”] SELECT * FROM #varchar_field ORDER BY mixed_field [/cc] Here we see everything is only sorted by it’s leading character, not taking into consideration the value of the numbers. Now let’s execute a revised version of this order by. ...