db2 sql substring

Label:1. Top10sql "with the most execution times"DB2 "SELECT * from Sysibmadm.snapdyn_sql ORDER BY num_executions DESC FETCH first ten rows only"2, the average execution time the longest Top10sql "DB2 "SELECT * from Sysibmadm.top_dynamic_sql ORDER BY average_execution_time_s DESC FETCH first ten rows only"3, the most ranked Top10sql "DB2 "SELECT * from Sysibmadm.

This article mainly describes several ways to use SQL statements to track DB2 databases. I saw several ways to use SQL statements to track DB2 databases on the relevant website two days ago, let's share it with you. I hope you will have a better understanding of it after browsing. 1. Use commands to open a trail

access|js|oracle|server|sqlserver| Access | data | Database access Oracle, SQL Server, DB2, Informix, Access database in JSP Now have a lot of novice JSP users will often ask the database how to connect ah, how old mistakes ah? So I concentrated in this write an article for your reference, in fact, this database logic all put in the JSP may not be a good practice, but is conducive to beginners to learn, so

In DB2, when the SQL division operation result is decimal, 0 is displayed. In the SQL division operation, the SELECT value is 0 in the DB2 environment. What should I do? This article describes two solutions to the problem 0 when the SQL division operation result in

Like fuzzy query for oracle, mysql, db2, and SQL server in Mybatis, mybatisdb2 Different database languages: SQL server, Oracle, mysql, db2'' There are too many database system types. To put it simply, ACESS is suitable for small websites. asp and MYSQL are recommended for new websites.

Tags: Database SQL Server C #C # Connecting code sets for class six databasesThis article lists the program source code and points to note for C # connections to access, SQL Server, Oracle, MySQL, DB2, and Sybase six different databases.1.c# Connecting to accessProgram code:CodeUsing system.data;usingSystem.Data.OleDb;..String strconnection= "provider=microsoft.j

+ lcfieldf_key_like If you supply more than one key field comparison in your keyfieldlist, please tively you are "and" ing the tests -- lcconnect will update records that meet all the tests. likewise if you supply one or more key tests and an additional test in the condition property. Lcconnect does not directly support logical "or" operations of multiple conditions. you can, however, execute any query using lcconnection. execute, or construct an "or" type query in the condition field, using

DB2 clearing the database sequence cacheAlter sequence wfr.wfr_bill_histories_s NoCache;Create a script that empties all table dataSelect ' ALTER TABLE ' | | RTRIM (Tabschema) | | tabname| | ' Activate not the logged initially with empty table; ' from syscat.tables where type = ' T ' and Tabschema not in (' SYS IBM ', ' systools '); Generate statements that delete all foreign keysSELECT' ALTER TABLE ' | | tabschema| | '. ' | | SUBSTR (tabname,1,50) |

Compare SQL Server, Oracle, and DB2 I. Openness: SQL ServerIt can only run on windows without any openness. The stability of the operating system is very important to the database.The Windows9x series products focus on desktop applications, and the NT Server is only suitable for small and medium enterprises.In addition, the reliability, security, and scala

The syntax of the create statement is the same, and the data types are different. However, the syntax for creating a table using subqueries is different. SQL Server statements created using subqueries:Select empno, ename, Sal * 12 annsal, hiredate into dept30 from EMP where deptno = 30; Oracle uses query to create a table:Create Table dept30 Select empno, ename, Sal * 12 annsal, hiredate From EMP Where deptno = 30;

In the DB2 tuning process, you often want to be able to get SQL that is slow to execute in your current production environment, which you can then fine tune for specific slow SQL. The following scripts can be exploited, or are cumbersome to operate, and need to be run manually.DB2 Connect to Tablename;db2-x "Select Cur

; EXECUTE s; END LOOP; CLOSE Curs; END; --PROECSS 2 BEGIN--...... END; SET Copyresult = 1; END;Note the point:1. Sqlcode must be defined and must be defined below the outermost begin.2, must judge whether the Sqlcode equals 100, is equal to 100 when exits cursorloop, otherwise will die cycle.3, "OPEN curs" do not forget after "Cursorloop:".4, in DB2 Dynamic SQL if the inclusion

Tags: using data SP C size r database SQL BSPaged query statements that are used in different databases:Current page: CurrentPagePage Size: pagesize1. Oracle DatabaseSELECT * FROM (select A.*,rownum rn from (query_sql) A) where Rn Note: query_sql is a query SQL statement.OrSELECT * FROM (select RowNum rn,id from TABLENAME where RowNum 2. Infomix DatabaseSelect Skip CurrentPage First pagesize * from TABLENAM