Функция CONCAT предназначена для сложения строк при выборке из базы данных. Строками обычно выступают поля таблиц.
SELECT CONCAT("SQL ", "Tutorial ", "is ", "fun!") AS ConcatenatedString; Try it Yourself ». Definition and Usage. The CONCAT() function adds two or more expressions together. Note: Also look at the CONCAT_WS() function. Syntax.
I'm trying to compile this in my mind.. i have a table with firstname and lastname fields and i have a string like "Bob Jones" or "Bob Michael Jones" and several others. the thing is...
I am using MySQL and MySQL Workbench 5.2 CE. When I try to concatenate 2 columns, last_name and first_name, it doesn't work : select first_name + last_name as "Name" from test.student.
# Title: Generic UNION query (NULL) - 7 columns. # Payload: option=com_cpeventcalendar&task=load&id=1 UNION ALL SELECT NULL,NULL,NULL,CONCAT(0x716a707671...
The concat method creates a new array consisting of the elements in the object on which it is called, followed in order by, for each argument, the elements of that argument (if the argument is an array) or the argument itself (if the argument is not an array). It does not recurse into nested array arguments.
Консоль. Выполнить. SELECT hd + ' Gb' volume FROM PC WHERE model = 1232
The CONCAT() takes two up to 255 input strings and joins them into one. It requires at least two input strings. If you pass one input string, the CONCAT() function will raise an error.
SQL> select CONCAT('У попа', ' была собака') from dual
CONCAT returns char1 concatenated with char2. Both char1 and char2 can be any of the datatypes CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB. The string returned is in the same character set as char1.