Mysql concat string with column value how to#
Mysql concat string with column value full#

One column should contain the customers’ names, and the second one should display their full addresses. We want these data to be presented in two columns. The customers table stores all this information as well as some other data in separate columns. Suppose, we want to retrieve specific data from the customers table – the names and addresses of customers, including the cities and countries they live in.

Mysql concat string with column value how to#

How to concatenate multiple columns in MySQL However, work routines usually involve manipulating much larger strings. It is a decent example to illustrate the way the function works. Well, we reviewed the concatenation of several text fragments into one string. Now, let us review the different cases of using CONCAT in practice. Because of that, the function returns NULL: SELECT CONCAT('First Name, ','Last Name, ',NULL,'Address') AS Result Let’s look at the example where one of the arguments is NULL.

If you have NULL among your arguments, CONCAT will return NULL.

If all the arguments in the syntax are nonbinary strings, CONCAT will return a nonbinary string.

If you have at least one binary string as an argument, CONCAT will return a binary string.

If you have a numeric argument, CONCAT will convert it to its equivalent nonbinary string form.Important! The returned concatenated string may be of different MySQL data types – it depends on the arguments processed by the function: If you want a ‘phrase,’ you need to add spaces dividing separate words in the phrase: SELECT CONCAT('MySQL ','is ','RDBMS') AS Result The above syntax concatenates strings without a space, and you get only one word. Note that in the following example we are also providing a name for a new column that will display the result: SELECT CONCAT('My','SQL') AS 'Result' The simplest example is joining different pieces of text together to combine a new word or phrase. Usually, we use CONCAT() with the SELECT statement. In this case, the query will throw an error. However, you can’t execute CONCAT in MySQL without providing at least one expression. You can add as many expressions as you need. Where expression_1, expression_2, expression_n stand for the strings you are combining. The syntax for the CONCAT function is as follows: CONCAT(expression_1,expression_2.expression_n) However, in MySQL, the syntax is simpler and more accurate. It is a regular SQL function also present in Oracle, SQL Server, and PostgreSQL. The CONCAT function is not unique to MySQL databases. This article will explore the syntax and usage of the CONCAT function in MySQL to help you understand and master it excellently. Besides, it saves you space, as several strings become one item to address. CONCAT will let you do this job with one straightforward SQL statement. Your goal is to retrieve data and present it in a format suitable for reading. Why is it necessary to master? Assume you need to perform the data selection from several columns of a large table. In MySQL, the CONCAT function takes strings from different cells and joins them together in one cell, thus creating a new string. MySQL CONCAT_WS as a special form of CONCATĬoncatenation relates not only to computer programming, where it stands for the process of joining character strings end-to-end.In this article, we will look into the MySQL CONCAT() syntax, demonstrate to you how to use it, and explore the differences between CONCAT and CONCAT_WS. The MySQL CONCAT function is widely used to concatenate multiple column values into a single column.