How to Correctly Concatenate Strings in MySQL?

MySQL String Concatenation

The question pertains to the string concatenation operator in MySQL. The provided code is incorrect as it attempts to concatenate strings using the '||' operator without setting the appropriate SQL mode.

To perform string concatenation in MySQL, you need to use the '||' operator. However, to use this operator, you must first set the 'PIPES_AS_CONCAT' or 'ANSI' mode. This can be done using the SET command before performing the concatenation operation.

Here's a modified version of the code with the appropriate SQL mode set:

SET sql_mode='PIPES_AS_CONCAT';
SELECT vend_name || ' (' || vend_country || ')'
FROM Vendors
ORDER BY vend_name;

By setting the 'PIPES_AS_CONCAT' or 'ANSI' mode, you enable the '||' operator for string concatenation in MySQL. This allows you to combine multiple strings into a single string, as shown in the code above.

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