What are the different ways to concatenate SQL strings?

2 years ago
Benjamin Taylor
1 minute

There are several ways to concatenate strings in SQL.

  1. By using the “+” operator, you can concatenate two strings together. For example, you can use SELECT column1 + ‘ ‘ + column2 AS FullName FROM table.
  2. By using the CONCAT function, you can join multiple strings together. For example, you can use SELECT CONCAT(column1, ‘ ‘, column2) AS FullName FROM table;
  3. Some databases allow the use of the “||” symbol as a string concatenation operator. For example, SELECT column1 || ‘ ‘ || column2 AS FullName FROM table;
  4. Utilize the CONCAT_WS function: This function combines multiple strings together while allowing you to specify a delimiter. For instance: SELECT CONCAT_WS(‘ ‘, column1, column2) AS FullName FROM table;
  5. Some databases provide specific string concatenation functions, such as MySQL’s CONCAT_WS function and Oracle’s CONCAT function. Depending on the database being used, you can select the appropriate function for string concatenation.

It is important to note that when concatenating strings, if there is a NULL value, it may result in the entire concatenation being NULL. You can use either the COALESCE function or the IFNULL function to handle NULL values and avoid the concatenation resulting in NULL.

bannerAds