How can one explicitly specify the table name in a SQL query to prevent ambiguity in column names in PHP?

When working with SQL queries in PHP, it is important to explicitly specify the table name to prevent ambiguity in column names, especially when joining multiple tables. This can be done by prefixing the column names with the table name or alias in the SELECT statement. By doing this, you can ensure that the database engine knows exactly which table the column belongs to, avoiding any confusion or errors. 

$query = "SELECT table1.column1, table2.column2 
          FROM table1 
          JOIN table2 ON table1.id = table2.id";

Keywords

PHP SQL query table name ambiguity column names

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