mac osx安装mysql mysql
两天的折腾结果: 问题一:
import MySQLdb Traceback (most recent call last): File stdin, line 1, in module File /Library/Python/2.7/ site-packages/MySQLdb/__init__.py, line 19, in module import _mysql ImportError: dlopen(/Library/Python/2.7/
两天的折腾结果:
问题一:
import MySQLdb Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/Library/Python/2.7/site-packages/MySQLdb/__init__.py", line 19, in <module> import _mysql ImportError: dlopen(/Library/Python/2.7/site-packages/_mysql.so, 2): Symbol not found: _mysql_affected_rows Referenced from: /Library/Python/2.7/site-packages/_mysql.so Expected in: flat namespace in /Library/Python/2.7/site-packages/_mysql.so 关闭mysql 重新安装mysql-python: admin$:mysql.server stop admin$:sudo pip uninstall MySQL-python admin$:sudo pip install MySQL-python
问题二:
Traceback (most recent call last): ... import MySQLdb File "/Users/cole/Library/Python/2.5/site-packages/MySQLdb/__init__.py", line 19, in <module> import _mysql ImportError: dlopen(/Users/cole/Library/Python/2.5/site-packages/_mysql.so, 2): Library not loaded: /usr/local/lib/libmysqlclient.18.dylib Referenced from: /Users/cole/Library/Python/2.5/site-packages/_mysql.so Reason: no suitable image found. Did find: /usr/local/lib/libmysqlclient.18.dylib: mach-o, but wrong architecture /usr/local/lib/libmysqlclient.18.dylib: mach-o, but wrong architecture pip uninstall MySQL-python brew uninstall mysql brew install mysql --universal pip install MySQL-python

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MySQL is suitable for beginners because it is simple to install, powerful and easy to manage data. 1. Simple installation and configuration, suitable for a variety of operating systems. 2. Support basic operations such as creating databases and tables, inserting, querying, updating and deleting data. 3. Provide advanced functions such as JOIN operations and subqueries. 4. Performance can be improved through indexing, query optimization and table partitioning. 5. Support backup, recovery and security measures to ensure data security and consistency.

Navicat itself does not store the database password, and can only retrieve the encrypted password. Solution: 1. Check the password manager; 2. Check Navicat's "Remember Password" function; 3. Reset the database password; 4. Contact the database administrator.

Create a database using Navicat Premium: Connect to the database server and enter the connection parameters. Right-click on the server and select Create Database. Enter the name of the new database and the specified character set and collation. Connect to the new database and create the table in the Object Browser. Right-click on the table and select Insert Data to insert the data.

Navicat for MariaDB cannot view the database password directly because the password is stored in encrypted form. To ensure the database security, there are three ways to reset your password: reset your password through Navicat and set a complex password. View the configuration file (not recommended, high risk). Use system command line tools (not recommended, you need to be proficient in command line tools).

You can create a new MySQL connection in Navicat by following the steps: Open the application and select New Connection (Ctrl N). Select "MySQL" as the connection type. Enter the hostname/IP address, port, username, and password. (Optional) Configure advanced options. Save the connection and enter the connection name.

Common reasons why Navicat cannot connect to the database and its solutions: 1. Check the server's running status; 2. Check the connection information; 3. Adjust the firewall settings; 4. Configure remote access; 5. Troubleshoot network problems; 6. Check permissions; 7. Ensure version compatibility; 8. Troubleshoot other possibilities.

Steps to perform SQL in Navicat: Connect to the database. Create a SQL Editor window. Write SQL queries or scripts. Click the Run button to execute a query or script. View the results (if the query is executed).

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.
