oracle update

Use Cases of Oracle update + with, oracleupdateDrop table test purge;Create table test (Id number,Code varchar (20 ),Name varchar (20));Insert into test values (1, '20170101', 'aaa ');Insert into test values (2, '20170101', 'bbb ');Insert into test values (3, '20170101', 'ccc ');Insert into test values (4, '20170101', 'ddd ');Insert into test values (5, '20170101', 'eee ');Insert into test values (6, '20170

In Oracle, there are times when you need to update another table with one table. The following are examples of implementations: 1. Create a table test_a CREATE TABLE Test_a (ID Number (19),Name VARCHAR2 (20),Age Number (3)) 2. Insert some data yourself 3. Create a table with the same structure as Test_a Test_b CREATE TABLE Test_b asSELECT * from Test_a; 4. Then make some modifications to the TEST_B da

---------- -------------------- --------------------1 201401_1 AAA2 201402_1 BBB3 201402_1 CCC4 201403_1 DDD5 201403_1 Eee6 201403_1 FFF6 rows have been selected.sql> rollback;-It looks like a temporary table needs to be built, then update and merge, but there's a way--3.update and with combinationsql> Update Test B set B.code= (With T as(Select T.id,code| | ' _

I made a small modification to the eclipse project today and found that the previously running project is always stuck today. I started to think that the database has not closed the connection, leading to connection congestion, later, I took a closer look at every closed link. The next breakpoint debugging finds that a problem occurs during the update process and the program is stuck on the update process.

Use of instance update for Oracle Stored Procedure usage Body section -- Update changesProcedure proc_sy_syjs_updateChangeItem (fcoursecode in Rule XT. sy_syjs_proitem.fcoursecode % type,Fcoursename in Rule XT. sy_syjs_proitem.fcoursename % type,Fitemid in pair XT. sy_syjs_proitem.fitemid % type,Fitemname in pair XT. sy_syjs_proitem.fitemname % type,Flabmemnum in

In csdn, it helps others write a simple trigger to update data, which involves several problems. Create or replace trigger tri_aAfter insertOn test11DeclarePragma autonomous_transaction; ---- after declare) indicates free transaction processing.BeginUpdate test11 set name = Replace (name ,'','');Commit;End;--------------First, you use TRIM. You can only filter spaces on both sides, so replace it with replace;When using the trigger, you can only

When updating a table, if you need to associate it with other tables, such SQL statements are hard to implement in Oracle. Each where condition must be nested with a bunch of select statements ~~The following SQL statement is written at work. Make a Memorandum: -- Update Net accounts receivable Update T_0303009 T1 Set T1.item _ value = ( Sele

About Oracle Update multiple table problemsThere are several ways to achieve this:One is:Update table1Set (field1,field2 ...) =(Select field1,field2 .....)From table2where Table1.field1=table2.field1)where Table1.field1 in (select Field1 from table2) Two kinds are:Create a primary key primary key or union key for the table1,table2 associated fieldUpdate (Select table1.field1,table1.field2,table2.field1,tabl

CREATE TABLE T1 (ID Number (10),Name VARCHAR2 (10));CREATE TABLE T2 (ID Number (10),Name VARCHAR2 (10));INSERT into T1 values (1, ' 06 ');INSERT into T1 values (2, ' 02 ');INSERT into T2 values (3, ' 03 ');INSERT into T2 values (1, ' 01 ');SELECT * from T1;select * from T2;Update T1Set t1.name = (select T2.name from T2 where t2.id=t1.id)where exists (select * from T2 where t2.id=t1.id);Oracle Multi-Table As

Tags: The parameter passed in as long as the parameter of the list type is OK ... 1, BULK Insert insert into T_city_index ( I D,city_code ) Select Seq_city_index. nextval,cd.* from ( Select #{item.citycode,jdbctype=varchar}, #{item.cityname,jdbctype=varchar} F Rom dual ) CD 2, batch with new Update T_city_index T Set t.city_name= #{item.cityname,jdbctype=varchar}, T.district_name= #{item.districtname,jdbctype=varchar}, where t.i

is rewritten as followsSelect as RID,sumover byorder by as from where substr (B.KJQJ,1,4= Extract ( year from Sysdate)The second subquery overrides, placing the association columns behind select and GROUP bySelect e.gs,e.bm,e.yw,e.kjqj,sum as from table2 ewhere substr (E.KJQJ,1,4)=Extract ( year from sysdate) Group by E.gs,e.bm,e.yw,e.kjqjThe third subquery, can be called on the basis of the second sub-query analysis function to accumulate processingSelectE.gs,e.bm,e.yw,e.kjqj,sum(E.jine2) Ov

Basic update statements Update all records Update Set Create Table TestSelect object_name, object_typeFrom all_objects;Select distinct object_nameFrom test;Update TestSet object_name = 'opops ';Select distinct object_nameFrom test;Rollback;

Yesterday, we found that the data analysis results in the program were incorrect. After the analysis was performed again, the original data was still there and the fields with values were accumulated. The heart said, No, It was analyzed only after record generation. Forgot to DELETE? Check the code and find a delete statement. Therefore, the query analyzer executes the statement and reports an error. I have tried it several times. Now, Delete From does not recognize the table name alias! Looking

Yesterday, we found that the data analysis results in the program were incorrect. After the analysis was performed again, the original data was still there and the fields with values were accumulated. The heart said, No, It was analyzed only after record generation. Forgot to DELETE? Check the code and find a delete statement. Therefore, the query analyzer executes the statement and reports an error. I have tried it several times. Now, Delete From does not recognize the table name alias! Looking

Tags: commit alt acl Ali through AC SEL record lock object_idReason:because there is no commit,oracle to lock the record when Plsql developer executes the update. can be resolved by querying the lock record first SQL code select S.sid, s.serial# from V$locked_object Lo, dba_objects ao, v$session s WHERE ao.object_ id = lo.object_id and lo.session_id = s.sid; then delete the locked record SQL code alter syst

Refer to http://www.oracle.com/technetwork/tutorials/tutorials-1876574.html for detail. Some of the content is copied here. The G1 garbage CollectorThe Garbage-first (G1) collector is a server-style garbage collector, targeted for multi-processor machines with large mem Ories. It meets Garbage collection (GC) Pause time goals with a high probability, while achieving high throughput. The G1 garbage collector is fully supported in Oracle JDK 7

Today in the project development, in order to test the project SQL execution effect, with Plsql developer execution, no commit to continue to tap the code, and then re-use Plsql Developer, may be network reasons, Plsql Developer disconnected from the database and was stuck, forcing it to end. The code after the test, the project did not effect after the execution, and no response, debug found that JDBC did not respond to SQL, asked the Valley teacher to find the reason. because there is no commi

In the process of doing the project today, it is found that a field in a table in the development library has many values that are empty, while the value of the field in the test library is there.So, what is the way to update the value of the field in the test library to the development library?This is easier to solve in SQL Server, and the method is not known in Oracle.Workarounds for similar issues in SQL ServerLater had to use the most stupid metho

1> how to modify the monitoring port of Oracle Database lite Mobile Server? Solution: In the default-web-site.xml under the [Oracle Database lite installation directory] \ mobile_productname \ J2EE \ mobileserver \ config \ directory: Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->8088"Display-name =" Solaris 10g (10.1.3) default web site "schema-Major

Oracle update operation copy TABLE: [SQL] CREATE TABLE myemp AS SELECT * FROM emp; www.2cto.com 1. add data Syntax: [SQL] INSERT INTO tablename [(field name 1 field name 2,...)] VALUES (value 1, value 2 ,...); add a piece of data: Recommended usage:[SQL] INSERT INTO myemp (empno, ename, job, mgr, hiredate, sal, comm, deptno) VALUES (7899, 'shao Han', 'it personnel ', 7369, '14-August-100', 1995, 40); For nu