在Redshift中,可以使用DATE_PART函数将时间戳转换为整数。DATE_PART函数用于提取时间戳中的特定部分,例如年、月、日、小时、分钟、秒等。 以下是将时间戳转换为整数的示例: 代码语言:txt 复制 SELECT DATE_PART(epoch, '2022-01-01 12:34:56') AS timestamp_integer; 上述示例中,'2022-01-01 12:34:56'...
DATE_CMP_TIMESTAMPTZ (date,timestamptz)INTEGER DATE_PART_YEAR 从日期中提取年份。 DATE_PART_YEAR (date)INTEGER DATEADD 按指定的时间间隔递增日期或时间。 DATEADD (datepart,interval,{date|time|timetz|timestamp})TIMESTAMP、TIME或TIMETZ DATEDIFF ...
Date and time functions + (Concatenation) operator ADD_MONTHS AT TIME ZONE CONVERT_TIMEZONE CURRENT_DATE DATE_CMP DATE_CMP_TIMESTAMP DATE_CMP_TIMESTAMPTZ DATEADD DATEDIFF DATE_PART DATE_PART_YEAR DATE_TRUNC EXTRACT GETDATE INTERVAL_CMP LAST_DAY MONTHS_BETWEEN NEXT_DAY SYSDATE TIMEOFDAY TIMESTAMP...
Amazon Redshift是亚马逊AWS提供的一种高性能、可扩展的数据仓库解决方案。它基于列存储技术,能够处理大规模数据集,并提供快速的查询性能。 要从Amazon Redshift获取当前年份的查询,可以使用SQL语句来实现。以下是一个示例查询: 代码语言:txt 复制 SELECT EXTRACT(YEAR FROM CURRENT_DATE) AS current_year; 这个查询...
方法一 SELECTTRIM(pgdb.datname)ASDatabase, TRIM(a.name)ASTable, ((b.mbytes/part.total::decimal)*100)::decimal(5,2)ASpct_of_total, b.mbytes, b.unsorted_mbytesFROMstv_tbl_perm aJOINpg_databaseASpgdbONpgdb.oid=a.db_idJOIN(SELECTtbl,SUM( DECODE(unsorted,1,1,0))ASunsorted_mbytes,...
Along with the encodings such as LZO and Zstandard, Amazon Redshift also offers compression encoding, AZ64, for numeric and date/time types.Concurrency: Amazon Redshift is designed to provide fast performance, whether data is queried in your Amazon Redshift data warehouse or in your Amazon S3 ...
To calculate the difference between the subfields of the date, Amazon Redshift has the function datediff. The following queries show an example of how to calculate the completion_days as the difference between eco_date and orginated_date. DATEDIFF determines the...
You need to export your environment variables when your window manager or compositor start up. Typically, you want to run this as part of its startup: systemctl --user import-environment; systemctl --user start graphical-session.target
Use Security Token Service (STS) credentials: You may configure thetemporary_aws_access_key_id,temporary_aws_secret_access_key, andtemporary_aws_session_tokenconfiguration properties to point to temporary keys created via the AWSSecurity Token Service. These credentials are sent as part of the JDBC...
L_PartKey int , L_SuppKey int , L_LineNumber int , L_Quantity int , L_ExtendedPrice decimal(13, 2) , L_Discount decimal(13, 2) , L_Tax decimal(13, 2) , L_ReturnFlag varchar(64) , L_LineStatus varchar(64) , L_ShipDate timestamp , ...