muscle names

1. Change the table name and field name to uppercase see-http://www.cnblogs.com/wenboge/articles/4121331.html2. Change the table name and field name to lowercase① change table name to lowercasebegin forCinch(SelectTABLE_NAME TN fromUser_tableswheretable_name Lower(table_name)) Loopbegin ExecuteImmediate'ALTER TABLE'||C.tn||'Rename to "'||Lower(c.tn)||'"'; Exception whenOthers ThenDbms_output.put_line (c.tn||'already exists'); End; EndLoop;End;② field is named lowercasebegin forT

--oracle See all of the user's table names, table comments, field names, field comments, empty, field type SELECT DISTINCT table_column.*, table_nallable. Data_type, table_nallable. NULLABLE from (SELECT DISTINCT Utc.table_name table_name, utc.comments table_comments, Ucc.column_name column_name, ucc.comments column_comments from User_tab _comments UTC, User_col_comments UCC where utc

ORACLE cannot use variables as column names and table names some of the individual validations are:1 DECLARE2Ename1 Emp.ename%TYPE;3TYPE Index_emp_type is TABLE of VARCHAR2( -)INDEX byPls_integer;4 index_emp Index_emp_type;5 BEGIN 6Index_emp (1) := 'E.ename';7 SELECTIndex_emp (1) intoEname1 fromEMP EWHEREE.empno=7369;8 EXECUTEIMMEDIATE'Select' ||Index_emp (1)|| 'From emp e where e.empno=7369' intoename1;

Often encountered some forget the table name situation, at this time only remember a approximate, at this time can be queried by the system table sysobjects to find the table name, such as to find the name of the table containing the user, can be implemented by the following SQL statement,Select *From sysobjectsWhere name like '%user% 'If you know the column name and want to find the name of the table that contains the column, you can add the system table syscolumns, and if you want to find all

Explore Python Tornado framework support for subdomain names and wildcard domain names, pythontornado In fact, Tornado's support for subdomain names and wildcard Domain Names (except in particular, the following subdomain names and wildcard domain

purpose of the command is very extensive, above just the pointer file name and directory name of the naming characteristics to extract some special cases. ii. basename and DirName ${} is not a command specifically designed to extract filenames and directory names, so the basename and DirName commands are specifically prepared for this.1, basenameThe purpose of this command is to extract the file name from the path, using the basename name [SUFFIX].

Get table names and comments:Select Relname as Tabname,cast (obj_description (Relfilenode, ' pg_class ') as varchar) as comment from Pg_class Cwhere relkind = ' R ' and Relname not-like ' pg_% ' and relname not-like ' sql_% ' ORDER by RelnameFilter out the Sub-table:Conditional and relchecks=0 can beGets the field name, type, comment, whether it is empty:SELECT col_description (A.attrelid,a.attnum) as Comment,format_type (A.atttypid,a.atttypmod) as ty

--oracle See all the user's table names, table gaze, field name, field gaze, is empty, field type SELECT DISTINCT table_column.*, table_nallable. Data_type, table_nallable. NULLABLE from (SELECT DISTINCT Utc.table_name table_name, utc.comments table_comments, Ucc.column_name column_name, ucc.comments column_comments from User_tab _comments UTC, User_col_comments UCC where utc.table_name = Ucc.table_name and utc.table_name not li

One day when writing classes suddenly thought of this problem, the following to explain how to solve the problem.Define a class:class test{public: void setnum (); void getnum (); Private : int num;}; void Test::setnum () { ten;} void Test::getnum () { printf ("%d\n", num);}Run:int Main () { test one; One.setnum (); One.getnum (); return 0 ;}Console output 100, which indicates that member functions can be directly modified by the member variables wit

This article describes how Python traverses directories and replaces file names and directory names in batches. Share to everyone for your reference, specific as follows: #encoding =utf-8 #author: Walker #date: 2014-03-07 #summary: Depth traverse the specified directory and change the subdirectory and file name to lowercase #注意, this program is only for Windows, Windows file (folder) name is case-inse

Tags: select databaseUpdate Dept B, (select Group_concat (T.deptid), Group_concat (d.deptname separator '/') as Dname, T.id, t.deptname from (sel ECT Substring_index (Substring_index (A.deptid, ', ', b.help_topic_id+1), ', ', -1) as DeptID, a.ID, A.deptname from (select D.father as DeptID, D.id, D.deptname from Dept D) a join Mysql.help_topic B on b.help_topic_id GROUP by ID, deptname) C set b.location=c.dname where b.id = C.idEffectCopyright NOTICE: This article for Bo Master original article,

Original: http://www.cnblogs.com/xdp-gacl/p/4264425.htmlIn peacetime development, the property names of the field names and tables in our table are not necessarily identical, and the following shows how to resolve conflicts where field names differ from entity class property names.First, prepare to demonstrate the tables and data that need to be usedCREATE TABLEO

In peacetime development, the field names in our table and the table corresponding entity class property names are not necessarily exactly the same, if you directly in the XML mapping file using SQL to map, will cause the return value is empty, the following elaboration of the solution:Test the tables and data usedCreate TableOrders (order_idint Primary Keyauto_increment, Order_novarchar( -), Order_priceflo

In MySQL, databases and tables correspond to directories and files under those directories. Therefore, the sensitivity of the operating system determines the case sensitivity of the database and table names. This means that the database and table names are case-insensitive in Windows and are case-sensitive in most types of Unix systems. A special case is MacOSX. When the default HFS + In MySQL, databases an

One server is bound to multiple domain names, and the Web server has only one public IP address. However, many websites with independent domain names run on the server, and multiple independent domain names direct to this public IP address, however, you can access the website content corresponding to your domain name. This means you can bind multiple domain

Label:SQL statement that queries all table field properties in a database 1. Get all user names: SELECT name from Sysusers where status= ' 2 ' and islogin= ' 1 ' islogin= ' 1 ' for account islogin= ' 0 ' indicates that the role status= ' 2 ' indicates that the user account status= ' 0 ' represents the System account 2. Get all database names: SELECT name from Master. sysdatabases ORDER by name 3. Gets all t

Oracle displays the user's table names, Table Comments, field names, field comments, whether it is empty, field type, and oracle fields. -- Oracle: view all the table names, Table Comments, field names, field comments of the user, whether the table is empty, and select distinct TABLE_COLUMN of the field type. *, TABLE_

In the development of the situation should be encountered, the database field names and property names are inconsistent, usually the database in the name of the field between multiple words using underscores concatenated together, and in the class property names are mostly used to name the hump, I have seen most of the way, So what if we use MyBatis to solve this

This article introduces how to obtain the names of all tables in a database and the names of all fields in a table. For more information, see. This article introduces how to obtain the names of all tables in a database and the names of all fields in a table. For more information, see. 1. All Database

PHP variable names are case-sensitive. function names are case-insensitive and are often ignored by new users. test the following. PHP variable names are case-sensitive: amp; lt ;? Php $ aaa = quot; phpddt.com quot; $ AA PHP variable names are case-sensitive. function names