=>s.school), tell EF, when querying student, please also query its associated School. If there are multiple entity associations, separate them with a comma ",". For example getallincluding (s=>s.school, S=>s.class)For ABP, if it is multi-tenant, users and other multi-tenant information can not be queried in the case, please add the following sentence before the query
Currentunitofwork.disablefilter (Abpdatafilters.mayhavetenant, abpdatafilters.musthavetenant);
Because the query for
Tags: nbsp statement table Insert Field sel ble from tabSELECT * into new table name from (SELECT * FROM T1 UNION ALL SELECT * from T2) This statement can be implemented to append the merged data to a new table. Do not merge duplicate data SELECT * FROM T1 UNION ALL SELECT * FROM T2 Merge duplicate Data SELECT * FROM T1 Union SELECT * FROM T2 Two tables, table 1 table 2 If you want to incorporate table 1 data into table 2, use the following statement
Label:can be applied to 2 different scenarios: 1. Clear all tables of data, after the data is emptied, it is best to be able to make the table identity column starting from 1 to count, so to reset the identity column's current value. 2. With replication, after the subscription synchronization data, the Subscriber data does not automatically grow, such as the self-increment ID of the 9527, but if the middle of the skipped ID, will automatically populat
Label:Mysqldump:got error:145:table ' wp_options ' is marked as crashed and should being repaired when using LOCK TABLES
The error is as shown above.Today in to their own WP site, when the export data found not to come out, reported as the error, in the Internet to find a bit of information, said that this Zhang is marked with problems, need to optimize. Reference:Http://www.cnblogs.com/hakuci/archive/2012/03/20/2407723.html
Thanks to the information
QtCreator uses QTableView to display the database table and adds a QTableView named tableView to the page. Add a QPushButton named qeury to the page. The table to be used is called academy, there are two fields: academy, academyName; + ----------- + -------------- + | academyId |
Qt Creator uses QTableView to display a QTableView added to the database table on the page, named tableView; adds a QPushButton n
This article mainly introduces php functions for reading data from database tables to Arrays. The example shows php's common database query skills, which is of great practical value, for more information about php functions, see the following example. Share it with you for your reference. The specific analysis is as follows:
This function does not care about t
Generator. xml
Generate statement:
Java-jar mybatis-generator-core-1.3.2.jar-configfile generator. XML-overwrite
Mysql-connector-java-5.0.8-bin.jar
Mybatis-generator-core-1.3.2.jar
:
Http://download.csdn.net/detail/u010653050/5780205
Http://download.csdn.net/detail/u010653050/5780211
Usage:
1. Create a table in the database to generate code in the future.
2. Create a folder generator under the root directory of drive D.
3. Add the following file
1. Query all database names in the database: The code is as follows:Copy code SELECT Name FROM Master... SysDatabases order by Name2. Query all the tables in a database: The code is as follows:Copy code SELECT Name FROM SysObjects Where XType = 'U' order by Name3. Query table structure information Th
How to change the MyISAM type table in a MySQL database to a table of type InnoDBChange a single tableALTER TABLE TABLENAME ENGINE=InnoDB; ALTER TABLE TABLENAME ENGINE=MyISAM;Change multiple tablesSELECT ' "' engine=innodb; ' )from information_schema.tablesWHERE='DBNAME ' 0 10000 ; Instructions for use:1. Replace the DBNAME in the above SQL statement with the name of the database you want to modify.2. Ex
Label:It is strongly recommended to back up the entire database before using this method. As for how to back up? You're not? Leave a message at the bottom of this article.Specific methods: Copy the following PHP execution statement, save as sql.php file (note the configuration database name, password, data header), FTP upload to the site and directory, run. How to bulk delete MySQL
Asp.net c # import excel to the mssql SQL database and support multiple sheet tables
Asp tutorial. net c # import excel to mssql SQL database tutorial and support multiple sheet tables'Solution 1:
ObjSheet = (Excel. _ Worksheet) objSheets. get_Item (Sheets );
'Instance code
For (int I = 0; I {
For (int j = 0; j {
ObjSheet. Cells [I + 2, j + 1] = dtData. R
How does discuzX2.5 write a page to directly operate database tables? I have a requirement to execute SQL statements directly. how can I write code? ------ Solution ------------------ One is that you use the mysql function provided by PHP to directly execute one is that you find the file defining IN_DISCUZ, including, or you can define how to write a page on discuz X2.5 to directly operate the
Oracle Database partitioning is an important means and method for optimizing the performance of Oracle databases. Before doing the project at hand, I only heard the name of an over-area, when I was talking about it at a seminar, I told myself that I was not proficient in learning the technology. Recently I worked on a GPS project and processed dozens of GB of data. In order to meet the real-time requirements of the system, data Query Efficiency must b
(){Return uid;}Public void setuid (string UID ){This. uid = uid;}}
3. Define the user class ing file user. HBM. xml
"-// Hibernate/hibernate mapping DTD 3.0 // en"Http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd>
4. Add the user. hbml. xml file to the hibernate. cfg. xml file.
JDBC: Microsoft: sqlserver: // localhost: 1433; databasename = usCom. Microsoft. JDBC. sqlserver. sqlserverdriverSASAOrg. hibernate. dialect. sqlserverdialectTrueUpdate
5. Compile the hbm2ddl tool class to g
Just in contact with PHP, you need to do a simple project.Project BackgroundSchool teachers more or less need to count the students of various materials, in addition to such as questionnaires, gold data such as the third party platform, the school is temporarily not available for their own statistical platform.The main functions are as follows:1. The teacher creates the form according to the information he needs to be counted.2. Students fill out the form and limit each student to only one piece
dba_tab_comments,all_tab_comments,这两个比user_tab_comments多了ower列。4. Get field Comments:select * from user_col_commentsuser_col_comments:table_name,column_name,comments相应的还有dba_col_comments,all_col_comments,这两个比user_col_comments多了ower列。user_col_comments;表字段注释(列注释)USER_COL_COMMENTS 视图显示已经为表中的列输入的注释。这些注释通过comment命令添加到数据库中。USER_COL_COMMENTS 视图包含3 列:Table_Name 表名或视图名Column_Name 列名Comments 已经为该列输入的注释5, Check table field Comment Case:查看JH表中字段的注释:select table_name,column_name,comments from user_col_commen
.
keystore
Used by the trusted app framework to store the server's private key (private key) and the public keys of other servers.
links
Track connections within the server (this connection is used for cross-space connections).
notifications
Store page and space-level concerns (watches).
trackbacklinks
Direction link.
confancestors
Increase the speed of permission checking by quickly viewing the ancest
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