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In our environment, we have many queries with predicate: "expression op expression". As they don't use indexes they're performing a table scan. We would like DB2 to be able to use indexes to resolve this type of predicate. Examples: SELECT [id], [...
Tech Note describes how to use INGEST via ADMIN_CMD:http://www-01.ibm.com/support/docview.wss?uid=swg22006386 but using INGEST via ADMIN_CMD is not supported by IBM (see TS000004839 and TS000004925). In addition to support INGEST also INGEST SET c...
External Stored Procedure sub modules to be loaded from same path as 'external name;
DB2 supports multiple (in our case development) databases within a db2 Instance and External Stored Procedures (in our case COBOL) can be developed in parallel by using different qualifiers in the external name e.g. alter procedure cxjjp.UIXN01 ex...
Your DB2 Entity Framework Core driver does not support value convertors. https://docs.microsoft.com/en-us/ef/core/modeling/value-conversions Value convertors are really useful with databases to do things like: Translate Y/N fields to proper boolea...
Enhance functionality of WITH clause to operate with DELETE and UPDATE in DB2 SQL statements like others flavours of SQL
Our team uses IBM DB2 220.127.116.11 Database Server for development activities. We see limitations of DB2 SQL WITH clause to work with only SELECT unlike other flavors of SQL like T-SQL which operates other DML operations.
Just like how WITH simplif...
Union all View (or common table expression of a UNION ALL) lead to HSJOIN
Case #0000086 Worked with developer and provided following explanation:When there is a join between a UNION ALL view (or a common table expression of a UNION ALL) to another input (let's named it Z), to be able to utilize index access on the table...
So I know there is a Mongo listener so that you can speak mongo to DB2. I also know DB2 understands the MySQL dialect; there should be a listener so that applications can connect to it, the app thinks its mysql, but the back end is db2.
Default of for read only for all select statements
As you might have noticed, the "for read only" clause of the select statement in DB2 is not widely known nor used. Most standards select statements going through the DB2 engine have the risk of becoming an ambiguous cursor with sub-optimal perform...
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