bridge names

In the development of the project, we often encounter the field names in the table and the corresponding entity class property names are not necessarily exactly the same situation, the following small series to show you how to resolve the field name and entity class Property name is not the same conflict problem, interested friends to study together. Preparation of tables and data to be used for presentati

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

--Get Stored Procedure creation statement Select O.xtype,o.name,cm.text from syscomments cm inner join sysobjects o on o.id=cm.id where xtype = ' P ' order By o.xtype,o.name,cm.text--get view path creation statement Select O.xtype,o.name,cm.text from syscomments cm inner join sysobjects o on o.id=cm . ID where xtype = ' V ' ORDER by o.xtype,o.name,cm.text--queries all table names, field names, types, length

The php page cannot be accessed through the domain name, other pages can be accessed through the domain name, the php page cannot be accessed through the domain name, other pages can be accessed through the domain name to solve the php environment is re-installed, what is the web server? Iis? Php pages cannot be accessed through domain names, and other pages can be accessed through domain names Php pages c

Tags: else allow PES databases structure _id occupy default property1. Query all database names in the database: SELECT Name from Master. sysdatabases ORDER by Name2. Query all the table names in a database: SELECT name from SysObjects Where xtype= ' U ' ORDER by Name3. Query table structure information: SELECT (case if A.colorder=1 then d.name else null end) Table name,A.colorder field ordinal, a.name fiel

1. Query all database names in the database:SELECT Name from Master. sysdatabases ORDER by Name2. Query all the table names in a database:SELECT name from SysObjects Where xtype= ' U ' ORDER by Name3. Query table structure information: 1 SELECT (case if A.colorder=1 then d.name else null end) Table name, 2 a.colorder field ordinal, a.name field name, 3 TY (a.id,a.name, ' isidentity ') =1 then ' √ ' else '

--get the stored procedure creation statementSelecto.xtype,o.name,cm.text fromsyscomments cmInner Joinsysobjects o onO.id=cm.idwhereXtype='P'Order byo.xtype,o.name,cm.text --Get view path creation statementSelecto.xtype,o.name,cm.text fromsyscomments cmInner Joinsysobjects o onO.id=cm.idwhereXtype='v'Order byo.xtype,o.name,cm.text --query all table names, field names, types, lengthsSelectO.name, C.n

Label: 1. Query all database names in the database: SELECT Name from Master. sysdatabases ORDER by Name 2. Query all the table names in a database: SELECT name from SysObjects Where xtype= ' U ' ORDER by Name 3. Query table structure information: 1 SELECT (case if A.colorder=1 then d.name else null end) Table name, 2 a.colorder field ordinal, a.name field name, 3 Erty (a.id,a.name, ' isidentity ') =1 then

PHP array format for all names and names PHP array format for all ethnic code and names, suitable for ThinkPHP framework configuration files Array ('Han '=> array ('name' => 'Han', 'code' => 1 ,), 'menggu' => array ('name' => 'Mongolian ', 'code' => 2 ,), 'hui' => array ('name' => 'hui', 'code' => 3 ,), 'zang '=> array ('name' => 'Tibetan', 'code' => 4 ,), 'we

In Linux, the database name, table name, column name, And alias are case-sensitive: 1. The database name and table name are case sensitive; 2. Table aliases are case sensitive; 3. The column name and column alias are case-insensitive in all cases; 4. Variable names are case sensitive; MySQL is case insensitive in windows. Therefore, in different operating systemsProgramAnd the database can run normally, the best way is to co

Modify the substitution of variable names, class names, and strings in XcodeIn doing iOS development code optimization work, before optimizing the code structure, we should first tidy up the project's appearance, the file and class naming to standardize, in Xcode provides us with a convenient and powerful name modification function.First step: Modify the class namePlace the mouse click on the name of the cl

Add and remove class names based on JavaScript and remove class names using javascript Method 1: Use the className attribute; Method 2: Use the classList API; // Function reg (name) {return new RegExp ('(^ | \ s)' + name + '(\ s + | $) ');} // hasClass addClass removeClass toogleClassvar hasClass, addClass, removeClass; if ('classlist' in document.doc umentElement) {hasClass = function (obj, cname) {return

Shang Silicon Valley-mybatis-resolves the conflict between field names and object class names, and Silicon Valley-mybatis- Project Structure: Prepare tables and data: CREATE TABLE orders(order_id INT PRIMARY KEY AUTO_INCREMENT,order_no VARCHAR(20), order_price FLOAT);INSERT INTO orders(order_no, order_price) VALUES('aaaa', 23);INSERT INTO orders(order_no, order_price) VALUES('bbbb', 33);INSERT INTO order

Oracle|sql server|access Database Tutorial All table names, field names SELECT * FROM user_tables WHERE table_name = ' username ' Use the following statement if you are logged on with this user:SELECT *From User_tables;If you are using another user:SELECT * from All_tables WHERE owner= ' user_name 'First, the first sentence: is the query of the user under all the tables? Ordinary users, just granted Conne

} If the passed parameter tablename to user; Delete user; -After SQL dynamic parsing, the SQL before precompiling becomes: select * from user; Delete user; --WHERE name =?; --After the statement will not work as a comment, suddenly I and my little friend stunned!!! See, the original query statement, unexpectedly secretly contains a delete table data sql, is deleted, DELETE, delete!!! The important thing to say three times, can imagine, this risk is how big. ${} is typically us

Label:--Get the stored procedure creation statementSelect O.XTYPE,O.NAME,CM.TextFromsyscomments cmInnerJoin sysobjects oOn O.id=Cm.idwhere xtype=‘P‘Orderby O.XTYPE,O.NAME,CM.Text--Get View Path Creation statementSelect O.XTYPE,O.NAME,CM.TextFromsyscomments cmInnerJoin sysobjects oOn O.id=Cm.idwhere xtype=‘V‘Orderby O.XTYPE,O.NAME,CM.Text--Query all table names, field names, types, lengthsSelect O.name, C.na

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].