Mysql common error codes_PHP tutorial
Common mistakes! <br>1016 Error: The file cannot be opened, use background repair or phpmyadmin to repair. <br>1044 error: Insufficient database user rights, please contact the space provider to solve it <br>1045 error: Incorrect database server/database user name/database name/database password, please contact the space provider to check the account. <br>1054 Error: The program file conflicts with the database. Please upload the correct program file to overwrite it. <br>1146 error: The data table is missing, please restore the backup data. <br>2002 error: The server port is incorrect, please consult the space provider for the correct port. <br>2003 error: mysql service has not been started, please start the service<br>1005: Failed to create table<br>1006: Failed to create database<br>1007: The database already exists, failed to create database<br>1008: The database does not exist Exists, database deletion failed<br>1009: Database file deletion failed <br>1010: Data directory cannot be deleted, database deletion failed<br>1011: Database file deletion failed<br>1012: System table cannot be read <br>1020: The record has been modified by other users <br>1021: Insufficient hard disk space, please increase the available hard disk space <br>1022: Duplicate keywords, failed to change the record <br>1023: Occurs when closing Error<br>1024: Read file error<br>1025: Error occurred while changing name<br>1026: Write file error<br>1032: Record does not exist<br>1036: The data table is read-only and cannot be modified Make modifications<br>1037: Insufficient system memory, please restart the database or server<br>1038: Insufficient memory for sorting, please increase the sorting buffer<br>1040: The maximum number of connections to the database has been reached, please add Number of available connections for large databases<br>1041: Insufficient system memory<br>1042: Invalid host name<br>1043: Invalid connection<br>1044: The current user does not have permission to access the database<br>1045: Unable to connect to the database, Incorrect username or password<br>1048: Field cannot be empty<br>1049: Database does not exist<br>1050: Data table already exists<br>1051: Data table does not exist<br>1054: Field does not exist<br>1065: Invalid SQL statement, the SQL statement is empty<br>1081: Unable to establish Socket connection<br>1114: The data table is full and cannot accommodate any records<br>1116: Too many open data tables<br>1129 : An exception occurred in the database, please restart the database <br> 1130: Failed to connect to the database, no permission to connect to the database <br> 1133: The database user does not exist <br> 1141: The current user does not have permission to access the database <br> 1142: The current user has no permission Permission to access the data table<br>1143: The current user does not have permission to access the fields in the data table<br>1146: The data table does not exist<br>1147: The user's access rights to the data table are not defined<br>1149: SQL statement syntax Error<br>1158: Network error, read error occurred, please check the network connection status<br>1159: Network error, read timeout, please check the network connection status<br>1160: Network error, write error occurred, please check the network connection status Status<br> <p align="left"></p><div style="display:none;"> <span id="url" itemprop="url">http://www.bkjia.com/PHPjc/631054.html</span><span id="indexUrl" itemprop="indexUrl">www.bkjia.com</span><span id="isOriginal" itemprop="isOriginal">true</span><span id="isBasedOnUrl" itemprop="isBasedOnUrl">http: //www.bkjia.com/PHPjc/631054.html</span><span id="genre" itemprop="genre">TechArticle</span><span id="description" itemprop="description">Common mistakes! 1016 Error: The file cannot be opened. Use background repair or phpmyadmin to repair. 1044 error: Insufficient database user permissions, please contact the space provider to resolve 1045 error...</span> </div> <div class="art_confoot"></div>

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MySQL is an open source relational database management system. 1) Create database and tables: Use the CREATEDATABASE and CREATETABLE commands. 2) Basic operations: INSERT, UPDATE, DELETE and SELECT. 3) Advanced operations: JOIN, subquery and transaction processing. 4) Debugging skills: Check syntax, data type and permissions. 5) Optimization suggestions: Use indexes, avoid SELECT* and use transactions.

You can open phpMyAdmin through the following steps: 1. Log in to the website control panel; 2. Find and click the phpMyAdmin icon; 3. Enter MySQL credentials; 4. Click "Login".

MySQL is an open source relational database management system, mainly used to store and retrieve data quickly and reliably. Its working principle includes client requests, query resolution, execution of queries and return results. Examples of usage include creating tables, inserting and querying data, and advanced features such as JOIN operations. Common errors involve SQL syntax, data types, and permissions, and optimization suggestions include the use of indexes, optimized queries, and partitioning of tables.

MySQL is chosen for its performance, reliability, ease of use, and community support. 1.MySQL provides efficient data storage and retrieval functions, supporting multiple data types and advanced query operations. 2. Adopt client-server architecture and multiple storage engines to support transaction and query optimization. 3. Easy to use, supports a variety of operating systems and programming languages. 4. Have strong community support and provide rich resources and solutions.

Redis uses a single threaded architecture to provide high performance, simplicity, and consistency. It utilizes I/O multiplexing, event loops, non-blocking I/O, and shared memory to improve concurrency, but with limitations of concurrency limitations, single point of failure, and unsuitable for write-intensive workloads.

MySQL and SQL are essential skills for developers. 1.MySQL is an open source relational database management system, and SQL is the standard language used to manage and operate databases. 2.MySQL supports multiple storage engines through efficient data storage and retrieval functions, and SQL completes complex data operations through simple statements. 3. Examples of usage include basic queries and advanced queries, such as filtering and sorting by condition. 4. Common errors include syntax errors and performance issues, which can be optimized by checking SQL statements and using EXPLAIN commands. 5. Performance optimization techniques include using indexes, avoiding full table scanning, optimizing JOIN operations and improving code readability.

MySQL's position in databases and programming is very important. It is an open source relational database management system that is widely used in various application scenarios. 1) MySQL provides efficient data storage, organization and retrieval functions, supporting Web, mobile and enterprise-level systems. 2) It uses a client-server architecture, supports multiple storage engines and index optimization. 3) Basic usages include creating tables and inserting data, and advanced usages involve multi-table JOINs and complex queries. 4) Frequently asked questions such as SQL syntax errors and performance issues can be debugged through the EXPLAIN command and slow query log. 5) Performance optimization methods include rational use of indexes, optimized query and use of caches. Best practices include using transactions and PreparedStatemen

To create a data table using phpMyAdmin, the following steps are essential: Connect to the database and click the New tab. Name the table and select the storage engine (InnoDB recommended). Add column details by clicking the Add Column button, including column name, data type, whether to allow null values, and other properties. Select one or more columns as primary keys. Click the Save button to create tables and columns.
