Teradata中,关键词FORMAT用于格式化列或表达式。例如,LPAD中FORMAT '9(n)'和'z(n)'分别用'0'和空格(' ')表示。数据类型转换可使用CAST或直接数据类型([like (expression1)(CHAR(n))])进行。该功能使用CAST实现。详情参见类型转换和格式化。输入:FORMAT和CASTSE
实战三:将年月转为年月日 CAST(CAST(CAST(MONTH_ID AS INTEGER)||'01' AS VARCHAR(20)) AS DATE FORMAT 'YYYYMMDD') MONTHID_DATE,
选项:year | month | day | hour | minute | second cast(((a.aactl_tch_end_tmstp - a.actl_tch_start_tmstp) second(4))asinteger)>=15 ==>报错超出限制,改为如下语句a.actl_tch_end_tstp> (a.actl_tch_start_tmstp + interval'15'second ) SELECTADD_MONTHS('1999-08-15',1);//返回19...
select cast(last_name as char(5)) from employee where department_number=401; Teradata也可以利用CAST函数来完成上面的操作,另外,它也作了扩充.为了完成上面相同的操作,也可以使用下面的表达方式 select salary_amount(integer); select salary_amount(dec(6,0)); select last_name(char(5)); Teradata对CAST...
Teradata支持类似如下的cast语法: cast(XXX as int format '999999') cast(XXX as date format 'YYYYMMDD') 而ADB for PG支持类似cast(XXX as int)、cast(XXX as date),不支持在cast中声明format。所以,对于cast(XXX as int format '999999'),需要编写函数来实现相同功能;而对于cast(XXX as date format '...
Teradata支持如下的cast语法: cast(XXX as int format '999999') cast(XXX as date format 'YYYYMMDD') 而云原生数据仓库PostgreSQL版支持如下cast语法: cast(XXX as int) cast(XXX as date) 云原生数据仓库PostgreSQL版不支持在cast中声明format。 对于cast(XXX as int format '999999'),需要编写函数来实现相同...
SELECT CAST(CURRENT_DATE AS INTEGER);由于⽇期存储为整数，您可以对它们执⾏⼀些算术运算。 Teradata提供执⾏这些操作的函数。提取 EXTRACT函数从DATE值提取⽇，⽉和年的部分。此功能还⽤于从TIME / TIMESTAMP值提取⼩时，分钟和秒。例 以下⽰例显⽰如何从⽇期和时间戳值提取年，⽉，⽇期...
SELECT CAST(CURRENT_DATE AS INTEGER) 日期提取 EXTRACT函数从DATE值提取日,月和年的部分。 此功能还用于从TIME / TIMESTAMP值提取小时,分钟和秒: SELECTEXTRACT(YEAR FROM CURRENT_DATE);EXTRACT(YEAR FROM Date)---2016SELECTEXTRACT(MONTH FROM CURRENT_DATE);EXTRACT(MONTH FROM Date)---1SELECTEXTRACT(DAY...
org.jooq.exception.DataAccessException: SQL [select count(*) from "test"."t_book" where "test"."t_book"."ID" in (cast(? as integer), cast(? as integer), cast(? as integer), cast(? as integer), cast(? as integer), cast(? as integer), cast(? as integer), cast(? as inte...
select cast(last_name as char(5)) from employee where department_number=401; Teradata也可以利用CAST函数来完成上面的操作,另外,它也作了扩充.为了完成上面相同的操作,也可以使用下面的表达方式 select salary_amount(integer); select salary_amount(dec(6,0)); ...