Reposted from: longtang Bay
1.1.1 obtain the first N records
SQL Server: Select Top N * From xtable
ORACLE: Select * From xtable where rownum
DB2: Select * From xtable fetch first n rows only
1.1.2 obtain the current date
SQL Server: Select getdate
The following articles mainly describe the DB2 external file format. We may often need to process a task in DB2 database maintenance. For example, before the database is put into production and use, a large amount of information needs to be created
Prior to data import, the DB2 database system often checks the format of external files carefully. If the format of the external file does not meet the mandatory requirements of the database, the database will refuse to import data. This time I will
DB2 changes the date format in terms of date representation, which is also a problem I often encounter. The default format for date is determined by the database region code, which is specified when the database is created. For example, if I use
DB2 Date Time function(DATE (TRIM (CHAR (dt#11y)) | | -' | | TRIM (CHAR (dt#11m)) | | ' -' | | TRIM (CHAR (dt#11d))) between date (' & StrDate1 & ') and date (' & StrDate2 & '))(Y > Y) or ((y = y) and (M > m)) or ((y = y) and (M = m) and (d >=
Common DB2 commands
Common DB2 commandsI. Basics1. db2 connect to -- connect to the local database nameDb2 connect to user using -- connect to the remote database2. db2 force application all -- force all applications to disconnect the database3.
DB2 date format change is a problem that many people have mentioned. The following describes how to solve the problem of DB2 date format change. If you have encountered a similar problem u, take a look.
The default DB2 date format is determined by
DB2 Common CommandsFirst, the basic article1. DB2 Connect to --Connect to local database nameDB2 Connect to user Using --connect to the remote database2. DB2 force application All--forcing all applications to disconnect from the database3. DB2
DB2 supports the following two types of tablespaces:1. System Management Memory table space (Sms-system MANAGED STORAGE)2. Database Management Memory table space (Dms-database MANAGED STORAGE)Comparison of characteristics of SMS and DMS user table
The following article describes the comprehensive understanding of the external file formats supported by the DB2 database. If you are interested in the comprehensive understanding of the external file formats supported by the DB2 database, you can
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