This will set the Explain option for the duration of your session. open a db2 command window in adminstrator mode. you must then stop and restart your DB2 server. Once this option has been set, any Stored Procedure which are created will be Explained, and the explain info will be written to your explain tables.

2018-08-01

4. All the information about the access path used. 5. All the information about the user-defined functions used. 6. The previous sections used the explain tool to examine DB2 access plans.

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Whether the DB2 has made use of index, and if yes which all indexes. 2. Whether a join criteria satisfied in the table. 3.

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db2 “select substr(COL1,1,10) COL1 from TEST_TABLE” The result will be displayed in a single line for the no of columns that the display screen can accommodate. Hope it helps.

Tables. 2. Indexes. 3.

Db2 creates EXPLAIN output and populates EXPLAIN tables in the following situations: When an EXPLAIN statement is executed. At BIND or REBIND with the EXPLAIN (YES) or (ONLY) bind options. Rows are added for every explainable statement in the When an explainable dynamic statement is executed and

6. DB2 Indexes.

I'm familiar with Oracle more so than DB2, I have a piece of JavaScript code that makes an Oracle (SQL) call that returns an explain plan, essentially a remote statement execution. From what I've read DB2 looks to be a little different in that there is a command line utility to generate the plan.
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Internet and child safety essay, ibm db2 case study essay about myself during mco essay  For LOB table spaces Db2 Page-level locking generally results in better CPU innan"HSP: How to Explain High Sensitivity to People Who Won't 'Get' ItStyle:  the data quality objectives (DQO) defined by the European Air Quality Directive. (2008/50/EC) for indicative measurements, if supported by adequate post  större register använder man databasservrar (SQL-server), som till exempel IBM DB2, MySQL,. Microsoft else, elseif, enclosed, errors, escaped, exists, explain. DB2 & RPG Summit Ruby Intro for IBM I. • Security Considerations for Development.
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3. Using DB2 Functions. 4. Using DB2 User-Defined Functions and Data Types. 5. Data Definition Guidelines. 6. DB2 Indexes. 7. Database 

zEXPLAIN - this option is the same of YES Explain name of DB2 subsytem that executed EXPLAIN: SECTNOI: INTEGER: Section number of the statement: EXPANSION_REASON: CHAR(2) Applies to only statements that reference archive tables or temporal tables. For other statements, this column is blank. The DB2 Optimizer is a cost-based optimizer, which means it calculates the cost of multiple access paths (in a unit called Timerons), and then chooses the cheapest access path. One of the advantages of the SQL language is that it means we don’t have to know where a particular piece of data lives on disk or memory. Db2 explain gives us the info for the plan, package, or SQL statement when it is bound. The output of the EXPLAIN is stored in user-created table called plan table.