When working with INTERVAL values, sometimes it is necessary to specify the precision with which you are dealing. For example, suppose you have the following field defined: lead_time INTERVAL DAY to DAY To add 10 days to the lead time you could use a SQL statement like this: SELECT lead_...
When working with INTERVAL values, sometimes it is necessary to specify the precision with which you are dealing. For example, suppose you have the following field defined: 代码语言:javascript 复制 lead_timeINTERVALDAYtoDAY To add 10 days to the lead time you could use a SQL statement like th...
您可以使用 SQL 在企业级地理数据库中创建表和要素类的视图,以限制视图用户可访问的列和记录,您也可以定义视图以从两个表或一个要素类和一个表中连接信息。如果视图定义中包含空间列,则视图用户可在ArcGIS Desktop客户端中可视化地图中的要素。 本主题中的示例介绍了如何在IBM Informix数据库中创建...
When working with INTERVAL values, sometimes it is necessary to specify the precision with which you are dealing. For example, suppose you have the following field defined: lead_time INTERVAL DAY to DAY To add 10 days to the lead time you could use a SQL statement like this: SELECT lead_...
The TODAY function returns a DATE data value representing the current date. For example, you could execute a SQL function like this: UPDATE member SET change_date = TODAY WHER member_number = 12345 1. 2. CURRENT The CURRENT function is similar to the TODAY function, except it returns a DA...
ISQL like Query By Example front end for MySQL 17,940 Merv Graham 09/04/2005 07:02PM Re: ISQL like Query By Example front end for MySQL 7,679 dlahoti 10/29/2005 04:36PM Re: ISQL like Query By Example front end for MySQL ...
informix安装教程以及创建一个实例(详细) 一、informix简介和特性 IBMInformix是一种快速灵活的数据库,能够无缝集成SQL,NoSQL / JSON以及时间序列和空间数据。它的多功能性和易用性使Informix成为从企业数据仓库到单个应用程序开发的各种环境的首选解决方案。另外,由于Informix占用空间小和具有自我管理功能,因此非常适合嵌入...
Returns the Informix SQL fieldproperties of every field in the query as an associative array. Properties are encoded as: "SQLTYPE;length;precision;scale;ISNULLABLE" where SQLTYPE = the Informix type like "SQLVCHAR" etc. and ISNULLABLE = "Y" or "N". 参数...
一些Informix+SQL函数的用法及日期操作 一些Informix SQL函数的用法 一、内部函数 1、内部合计函数 1）COUNT（*） 返回行数 2）COUNT（DISTINCT COLNAME） 返回指定列中唯一值的个数 3）SUM（COLNAME/EXPRESSION） 返回指定列或表达式的数值和； 4）SUM（DISTINCT ...
例: SQL を使用して SQL Server でデータベース ビューを作成する バージョン対応登録されていない履歴データ バージョン対応登録されたデータ SQL を使用した Global ID または GUID の挿入例: SQL を使用して Informix でデータベース ビューを作成する ...