db2

问题 I have 2 varchar(64) values that are decimals in this case (say COLUMN1 and COLUMN2, both varchars, both decimal numbers(money)). I need to create a where clause where I say this: COLUMN1 < COLUMN2 I believe I have to convert these 2 varchar columns to a different data types to compare them like that, but I'm not sure how to go about that. I tried a straight forward CAST: CAST(COLUMN1 AS DECIMAL(9,2)) < CAST(COLUMN2 AS DECIMAL(9,2)) But I had to know that would be too easy. Any help is

问题 Using ODBC driver, ibm-iaccess-1.1.0.10-1.0.amd64, on Debian Linux. When I perform a php sql query and validate the response, I see some of the data returned is not valid utf-8. mb_check_encoding returns 'false' and the character on screen in a chrome browser is the diamond question mark character. This happens on a few CHAR field types. if(!mb_check_encoding($row["field"])) { ... exit with utf-8 error } I can work around this by converting from UTF-8 to UTF-8: mb_convert_encoding($row["field

问题 I'm using the free version of Db2 on IBM Cloud. I want to use it in Spring Boot application with JDBC driver. But I don't know what's the SQL format for the Db2 on IBM Cloud. The official documents are somewhat clutter. I have googled but can't find a tutorial. I have the following SQL that works with H2 database. I want to translate to Db2 on IBM Cloud's SQL format. I have searched some SQL dialect translators like this one: https://www.jooq.org/translate/ But it seems not work for the IBM

问题 we used REPLACE () to convert the character string passed as an argument from half-width characters to full-width characters (replace all half-width characters with REPLACE ()). Finally, a character string in which half-width characters are converted to full-width characters is returned as a result. When creating this function, it cannot be used without declaring "CONTAINS SQL" (a compilation error occurs in the called procedure) in order to use it in the processing of other stored procedures

问题 The IBM Technote "How to translate the unique identifier as displayed within FileNet Enterprise Manager so that it matches what is stored in the Oracle and DB2 databases" outlines how DB2 & Oracle store guids in a byte reversed order. How can I convert them into a friendly guid? 回答1: Presuming that object_id is char(16) for bit data , the following expression returns the same. '{'||translate( 'GHEFCDAB-KLIJ-OPMN-QRST-UVWXYZ012345' , hex(F.object_id) , 'ABCDEFGHIJKLMNOPQRSTUVWXYZ012345')||'}'

问题 I have a table with clients and the history of their rating (low, medium, high) which gets assessed quarterly. Example table: client_ID rating eff_from 111 high 30.09.2018 111 high 30.06.2018 111 medium 31.03.2018 111 high 31.12.2017 111 high 30.09.2017 111 low 30.06.2017 222 medium 30.09.2018 222 high 30.06.2018 222 high 31.03.2018 222 low 31.12.2017 222 low 30.09.2017 222 medium 30.06.2017 I would like to get the minimum eff_from date for the latest rating. From the table above, that would

问题 I have to write a trigger in db. I wanted to declare some local variables inside it and do some manipulations before inserting the value to a table. Using DB2, is it possible to have local variables inside trigger code? 回答1: Yes you can! Here's some example code (All in SQL) from the iSeries DB2 SQL Programming manual (which tends to run a few versions behind LUW): CREATE TRIGGER TransactionBeforeTrigger BEFORE INSERT ON TransactionTable REFERENCING NEW AS new_row FOR EACH ROW MODE DB2ROW

问题 I am very new to perl and I am trying to install DBD::DB2 module for perl on a windows PC using cpan but I keep getting this error: CPAN: CPAN::SQLite loaded ok (v0.212) Database was generated on Thu, 06 Dec 2018 20:55:19 GMT Running install for module 'DBD::DB2' CPAN: Digest::SHA loaded ok (v6.02) CPAN: Compress::Zlib loaded ok (v2.081) Checksum for D:\STRAWB~1\cpan\sources\authors\id\I\IB\IBMTORDB2\DBD-DB2-1.85.tar.gz ok CPAN: Archive::Tar loaded ok (v2.32) CPAN: YAML::XS loaded ok (v0.75)

问题 select * from Schem.Customer where cust='20' and cust_id >= '890127' and rownum between 1 and 2 order by cust, cust_id; Execution time appr 2 min 10 sec select * from Schem.Customer where cust='20' and cust_id >= '890127' order by cust, cust_id fetch first 2 rows only ; Execution time appr 00.069 ms The execution time is a huge difference but results are the same. My team is not adopting to later one. Don't ask why. So what is the difference between Rownum and fetch first 2 rows and what