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1. stackoverflow.com › questions › 2177543MySQL - Using If Then Else in MySQL UPDATE or SELECT Queries

   stackoverflow.com › questions › 2177543

   1 lut 2010 · Here's a query to update a table based on a comparison of another table. If record is not found in tableB, it will update the "active" value to "n". If it's found, will set the value to NULL. UPDATE tableA LEFT JOIN tableB ON tableA.id = tableB.id SET active = IF(tableB.id IS NULL, 'n', NULL)"; Hope this helps someone else.

2. blog.finxter.com › 5-best-ways-to-use-if-statements-in-mysql-using-python5 Best Ways to Use IF Statements in MySQL Using Python

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   6 mar 2024 · This article explores various methods on how to implement IF statements in MySQL queries using Python to achieve such conditional logic. Method 1: Using execute() Method with an IF Statement.

3. www.geeksforgeeks.org › how-to-use-if-statement-in-mysql-using-pythonHow to Use IF Statement in MySQL Using Python - GeeksforGeeks

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   3 sty 2021 · Execute the following MySQL query: IF(condition, value_if_true, value_if_false) Example 1: In this example we are using this database table with the following query; Below is the implementation: Python3. # Establish connection to MySQL database. import mysql.connector. db = mysql.connector.connect(.

4. www.w3schools.com › python › python_mysql_updatePython MySQL Update Table - W3Schools

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   Update Table. You can update existing records in a table by using the "UPDATE" statement: Example Get your own Python Server. Overwrite the address column from "Valley 345" to "Canyon 123": import mysql.connector. mydb = mysql.connector.connect( host="localhost", user="yourusername", password="yourpassword", database="mydatabase" )

5. www.geeksforgeeks.org › python-mysql-update-queryPython MySQL - Update Query - GeeksforGeeks

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   9 mar 2020 · The update is used to change the existing values in a database. By using update a specific value can be corrected or updated. It only affects the data and not the structure of the table. The basic advantage provided by this command is that it keeps the table accurate. Syntax: UPDATE tablename. SET ="new value" WHERE ="old value";

6. www.geeksforgeeks.org › mysql-if-if-then-if-then-else-and-if-then-elseif-elseIF, IF-THEN, IF-THEN-ELSE and IF-THEN-ELSEIF-ELSE Statement -...

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   21 sie 2024 · The IF-THEN statement in SQL is used to execute a block of code if a specified condition is true. If the condition evaluates to true, the code within the THEN block is executed. If the condition is false, the block is skipped. Syntax: IF condition THEN. statements; END IF; Parameters Used:

7. blog.finxter.com › 5-best-ways-to-update-certain-values-in-a-mysql-table-using5 Best Ways to Update Certain Values in a MySQL Table Using ...

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   6 mar 2024 · Method 1: mysql-connector-python. Secure and robust. A comprehensive library maintained by Oracle. The syntax can be more verbose. Method 2: PyMySQL. Pure-Python MySQL client that’s easy to use and lightweight. There may be slight performance implications compared to compiled libraries. Method 3: SQLAlchemy.