desc in db2

original SYS login, for example:Then go to the Lisi login cmd form to query the T table and find the newly added data. For example, with:"Summary" assumes that the data is manipulated with DML. Must commit, the ability to guarantee the real deposit in the database.(3) Data Control Language (DCL) such as: Grant, Revoke ...(4) Query language, such as: Select ...(5) Transaction Control Language (Transaction controls, TC). such as: Commit,rollback,savepoint ...Iii. Overview of Sql*plusThe 1.sql*plu

During the test today, I want to query the tablespace information corresponding to the data file. In the desc dba_Data_files view, I found that this object does not exist. At that time, I thought it was normal that my DB could not be queried under mount. Later I queried dba_data_files under DB OPEN and reported that this object did not exist. I suddenly felt confused. All other objects can be queried normally, but the DBA _ * view cannot be used norma

Oracle uses SQL statements to implement the desc function: Select a. COLUMN_NAME field name,DATA_TYPE | DECODE (DATA_TYPE, 'date', '', 'clob','', 'blob ', '', 'bfile','', 'float ', '', 'long raw','', 'long', '', 'raw ',' ('| TO_CHAR (DATA_LENGTH) | ')',(DECODE (SIGN (INSTR (DATA_TYPE, 'Char '), 1,'(' | TO_CHAR (DATA_LENGTH) | ')', (DECODE (SUBSTR (DATA_TYPE, 1, 9 ),'Timestamp ','',(DECODE (NVL (DATA_PRECISION,-1),-1,'', (DECODE (NVL (DATA_SCALE, 0), 0

When using mysql, when I want to use desc to view the table structure, the following error message is displayed: ERROR 1 (HY000): Can't create/write to file '/tmp/#sql_1737_0.MYI' (Errcode: 13) I have never met anyone. I searched the internet. The chances of this problem are still high. Haha !! Solution Find the mysql installation directory. Note: If you compile and install mysql, go to the mysql directory you compile and install. If yum is installed,

Tags: des style blog color Io OS ar strong File If the above problem occurs, the SID cannot be identified. The solution is as follows: 1. Find the following directory,/opt/Oracle/product/10.2.0/db_1/Network/admin, and modify listener. ora (find-name listener. ora): # listener.ora Network Configuration File: /opt/oracle/product/10.2.0/db_1/network/admin/listener.ora # Generated by Oracle configuration tools. SID_LIST_LISTENER = (SID_LIST = (SID_DESC =

ORA-12505, Tns:listener does not currently know of SID given in Connect Desc.This situation is generally because the instance name of the database is not given, only the service name of the database is givenWhat is a DB instance name? The database instance name is the identity used to contact the operating system, meaning the database instance name is used for interaction between the database and the operating system. The instance name is also written to the parameter file, which is instance_nam

Modification method: modify the code in the include/arc. taglist. class. Php file as follows:The code is as follows: The code is as follows:Copy code This-> dsql-> SetQuery ("Select aid From 'dede _ taglist' where tid = '{$ this-> TagInfos ['id']}' And arcrank>-1 limit $ limitstart, $ getrow "); ChangeThe code is as follows: The code is as follows:Copy code $ This-> dsql-> SetQuery ("Select aid From 'dede _ taglist' where tid = '{$ this

ORDER BY PID Desc Add to the position of this statement?

In many cases, we need a table field list, such as the write control file CTL... DESC does not have a parameter to list only its NAME No. Let's access its dictionary table. USER_TAB_COLS USER_TAB_COLUMNS SQL> select column_name from user_tab_columns s where table_name = 't_ CACHE_ZCPROJECT '; It is often found that the sorting of COLUMN_NAME is different from that of DESC T_CACHE_ZCPROJECT. By defaul

Tags: roc share ACL isnull where SQL _id Simple Object After many times I have verified. Finally, we found a way to query the database structure in Sybase. Before that, I was very puzzled about how this Sybase database is not as easy as Oracle and MySQL. DESC table name; After the online query, get a result. sp_help table name;But there are multiple results. Although there is the result we want. But we just take one, and we're still in the middle.

Exception: Type mismatch05-06 08:12:38.151:e/androidruntime (14904): Java.lang. numberformatexception:invalid int: "18600000099"05-06 08:12:38.151:e/androidruntime (14904): at com.itheima.mobilesafe74.activity.blacknumberactivity$ Myadapter.getview (blacknumberactivity.java:122)1 PublicListintindex)2 {3 //to get the database object first4Sqlitedatabase db =blacknumberopenhelper.getwritabledatabase ();5 //The first parameter in Db.rawquery () is the SQL statement, and the second parameter is

Php outputs data and cannot descPHPcode lt ;? Php $ SQL = quot; selectC. id, C. numberfromcargo1Cleftjoincargo2C2onC. number = php output data, cannot desc PHP code Query ($ SQL); $ tb = ""; while ($ r = $ q-> fetch_array (MYSQLI_USE_RESULT) {$ tb. ="". $ R [number]."". $ R [shipper]."". $ R [nnne]."". $ R [po]."". $ R [invoice]."". $ R [pol]."". $ R [pod]." ". $ R [dest]."". $ R [vessel]."". $ R [bookingDate]."". $ R [received

Php outputs data and cannot descPHPcode lt ;? Php $ SQL quot; selectC. id, C. numberfromcargo1Cleftjoincargo2C2onC. numberC2.numberleftjoincargo3C3onC. numberC3.number quot; php outputs data and cannot desc PHP code Query ($ SQL); $ tb = ""; while ($ r = $ q-> fetch_array (MYSQLI_USE_RESULT) {$ tb. ="". $ R [number]."". $ R [shipper]."". $ R [nnne]."". $ R [po]."". $ R [invoice]."". $ R [pol]."". $ R [pod]." ". $ R [dest]."".

In MySQL, if you want to see the definition of a table, you have the following options1. Show CREATE TABLE statement:Show CREATE TABLE table_name;2. DESC TABLE_NAME Statement:CREATE TABLE person ( ID int. NOT NULL auto_increment primary key, name varchar (8), index Ix__person__name (nam e));d ESC person;+-------+------------+------+-----+---------+----------------+| Field | Type | Null | Key | Default | Extra |+-------+--------

Tags: unique constant associated MON Sales range full table scan subquery refMySQL can view and analyze the execution of SQL statements through explain or DESC, as follows to calculate sales for all companies in 2006, to correlate sales tables and company tables, and to sum the money fields with the corresponding SQL: SQL codeEXPLAIN SELECT SUM (money) from sales S,company C WHERE s.company_id=c.id and s.year=2006 \g; 1. Row **************************

Using the reverse index (index DESC), you can significantly increase the performance of SQL statements with an ORDER BY DESC clause. Another way is to create a reverse index, such as:CREATE INDEX T_IDX on table_name (time DESC);This creation, the leftmost value of the index is the latest time to insert the data, as if the data is to the left, when the index from

Tags: des style blog io color ar os sp forafter the database design is complete, it is often necessary to keep a desc description of all tables in the database in a wiki or other document, in particular the meaning and purpose of each field. It is not advisable to manually generate the nature. Therefore, I have written a simple Python program that automatically generates DESC descriptions of all the tables

A simple query statement has been an error in the location of Desc, at first thought it wasORDER BY Status Desc error, check multiple times, suspected DESC is the name of the field to blame, after verifying that, DESC is often used as a field name to identify the meaning of the descriptionThe solution is to use the ab

Tags: des data issues Database SQL window C MySQLToday, a development classmate to find me, said query SQL in reverse error, unknown reason, so rushed to the station site research.Sure enough, as long as the SQL with DESC will be an error, and ASC no problem. Even if DESC is used as a explain in the first sentence will be an error.Error messages are syntax errors ...Check the Sql-mode discovery is empty, it

Tags: body relationship x64 A pre ESC Share des BlogLi Wu:Heng Learn to think together, honouring teachers save Thanksgiving. Leaf See root three return to one, rivers the same oneness.Meekness Conscience Lord, willing to do without regrets to the most bitter. Reading exercises to keep the body and mind, sincere advice and the line and cherish. Data, data, Lingen on the data. You must be cautious about operating the database. Give the most bitter code here, and take a look at it, to h