Im trying to declare a variable i mysql but strangely none of these commands are working. Ive snipped these commands from stackoverflow solved questions and while these seem to work for most of the people , its throwing same error on my system.
MySQL Server version: 5.7.26-0ubuntu0.18.10.1 (Ubuntu)
> declare #d1 decimal(10,2)
> declare d1 float(10);
> declare `d1` BIGINT(2);
> declare d1 INT;
All these are giving same error
ERROR 1064 (42000): You have an error in your SQL syntax; check the
manual that corresponds to your MySQL server version for the right syntax
to use
Also, this command print nothing for me, no error just blanks :-
-> DECLARE #COURSE_ID INT
-> SELECT #COURSE_ID = 5
-> PRINT #COURSE_ID
->
-> ;
->
->
User-defined variables can be accessed without declaring or initializing. Referring to a variable not been initialized will have a value of NULL and a type of string.
Using SET statement:
SET #X=1 ;
Could be accessed by the simple select statement:
SELECT #X; /*will result in 1*/
SET #X=#X+2; /*will update X to 3 now*/
SELECT #x; /*will result in 3*/
Being Session-specific, user variables can assign values from a limited set of data types: integer, decimal, floating-point, binary or nonbinary string, or NULL value.
For Local variables: They needs to be declared using DECLARE before
being accessed and can be used as local variables and the input
parameters inside a stored procedure
DELIMITER //
CREATE PROCEDURE Vnita(n int)
BEGIN
DECLARE X INT DEFAULT 1;
END
//
Don't forget to change delimiter back to semicolon...
DELIMITER ;
--Thanks for asking.
Related
I tried to make a simple procedure in MariaDB 10.2 but I encountered an issue regarding variables defining.
I am receiving (conn:107) You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 3 message when I declare a variable.
I read the MariaDB documentation and I it says that a variable is defined like this DECLARE var_name [, var_name] ... type [DEFAULT value]
Where I am wrong? I am coming from Oracle SQL and some sintax is wired for me.
I use Eclipse with MariaDB JDBC to connect on SQL.
CREATE PROCEDURE nom_jobs_insert(IN p_name varchar(100) CHARACTER SET 'utf8')
BEGIN
DECLARE counter INT DEFAULT 0;
SELECT count(*) INTO counter
FROM nom_jobs
WHERE lower(name) = lower(p_name)
IF counter = 1 THEN
INSERT INTO nom_jobs(name) VALUES (p_name);
END IF;
END;
I found the solution.
In MariaDB you have to define a delimiter before create a procedure and you need to mark where the procedure code is finished.
DELIMITER //
CREATE PROCEDURE nom_jobs_insert(IN p_name varchar(100) CHARACTER SET 'utf8')
BEGIN
DECLARE counter INT DEFAULT 0;
SELECT count(*) INTO counter
FROM nom_jobs
WHERE lower(name) = lower(p_name);
IF counter = 1 THEN
INSERT INTO nom_jobs(name) VALUES (p_name);
END IF;
END; //
You have error not in DECLARE expression, add ; after SELECT statement
Here are the clues that point to a missing DELIMITER:
near '' at line 3
Line 3 contains the first ;
When the error says near '', the parser thinks it has run off the end of the "statement".
Put those together -- it thinks that there is one 3-line statement ending with ;. But the CREATE PROCEDURE should be longer than that.
CREATE PROCEDURE nom_jobs_insert(IN p_name varchar(100) CHARACTER SET 'utf8')
IS
DECLARE counter INTEGER DEFAULT 0;
BEGIN
SELECT count(*) INTO counter
FROM nom_jobs
WHERE lower(name) = lower(p_name)
IF counter = 1 THEN
INSERT INTO nom_jobs(name) VALUES (p_name);
END IF;
END;
i'm trying to make a login function on a website that is connected to a mySQL server. I have problems making the function work however.
CREATE FUNCTION login_function
(IN nick varchar(10),
IN pw varchar(10))
RETURNS NUMBER(1)
DETERMINIS
BEGIN
DECLARE v_result NUMBER(1);
SET v_result=0;
SELECT COUNT(username)
INTO v_result
FROM login
WHERE username=nick
AND password=pw;
RETURN v_result;
END;
##
Message:
1064 - You have an error in your SQL syntax: check the manual that corresponds to your MySQL server version for the right syntax to use near
'IN nick varchar(10),
IN pw varchar(10))
RETURNS NUMBER(1)
DETERMINIS
BEGIN'
at line 2.
What the database looks like:
https://gyazo.com/6ea3983e30bd564cd6f42ee58a327d5b
For functions you do not need to provide the direction of a parameter because all parameters must be in parameters. So, the definition of the function correctly:
CREATE FUNCTION login_function
(nick varchar(10),
pw varchar(10))
...
You also do not need the semicolon after the last end, and DETERMINIS should be DETERMINISTIC, and number(1) should be tinyint or bool.
You have several problems. First, you shouldn't include the IN keyword for parameters. Parameters are implied to be IN anyway.
Your next problem is that MySQL is reading your ; and thinking "I have reached the end of the statement". So it is trying to parse only part of your function before returning. You need to set your delimeter to something else so that it knows "process this entire block". Here's what happens when I try both in the console:
mysql> create function foo (IN i int, IN j int) returns int BEGIN
-> declare q int;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'IN i int, IN j int) returns int BEGIN
declare q int' at line 1
mysql> create function foo (i int, j int) returns int BEGIN declare q int;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1
mysql> create function foo (IN i int, IN j int) returns int begin return i*j; end //
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'IN i int, IN j int) returns int begin return j; end' at line 1
mysql> DELIMITER //
mysql> create function foo (i int, j int) returns int
-> BEGIN
-> declare q int;
-> SET q = i*j;
-> return q;
-> end;
-> //
Query OK, 0 rows affected (0.01 sec)
You also have a data type of NUMBER. This should be one of the integer varieties (tinyint, or int(1), for example) or boolean.
Finally, you've inserted some sort of keyword DETERMINIS into your function creation. I've not seen that in any MySQL documentation before. (As shadow pointed out, it should be DETERMINISTIC… I admit that I missed that).
I'm trying to set up a MySQL function for my Mail-server. The MySQL Version is 5.1.66.
I do know what is wrong with this query. I also tried with RETURN DOUBLE, READS SQL DATA, and DETERMINISTIC but none of them help.
I am using PhpMyAdmin. The delimiter is set to $$. But all I get is a cryptic error message:
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'TEXT CHARSET utf8 READS SQL DATA BEGIN DECLARE mygoto VARCHAR(25' at line 3
My code:
CREATE PROCEDURE `get_email_alias`(
myemail VARCHAR(255)
) RETURNS TEXT CHARSET utf8
READS SQL DATA
BEGIN
DECLARE mygoto VARCHAR(255);
DECLARE sdomain VARCHAR(255);
DECLARE ddomain VARCHAR(255);
SELECT SUBSTRING(myemail, INSTR(myemail, '#')+1) INTO sdomain;
SELECT target_domain
FROM alias_domain
WHERE alias_domain = sdomain
AND active = 1
LIMIT 1
INTO ddomain;
IF ddomain IS NOT NULL THEN
SELECT REPLACE(myemail, sdomain, ddomain) INTO myemail;
END IF;
SELECT goto
FROM alias
WHERE address = myemail
AND active = 1
LIMIT 1
INTO mygoto;
IF mygoto IS NOT NULL THEN
RETURN mygoto;
END IF;
RETURN null;
END $$
For anyone that comes across this later:
There was originally a syntax error in the keyword PROCEDURE. It was missing the final E.
According to the MySQL syntax, CREATE PROCEDURE does not RETURN. However, CREATE FUNCTION does allow the RETURN in the syntax. Reference: http://dev.mysql.com/doc/refman/5.1/en/create-procedure.html.
PROCEDURE" on first line is missing "E"
I'm a bit of a noob when it comes to stored procedures in general, but I'm trying to write the following
Create procedure clone_perms
as
declare #new_id varchar(30), #old_id varchar(30)
declare get_perms cursor for select userspermsUserid, userspermsPermission from users_permissions where userspermsUserid=#old_id
declare #perms varchar(30), #on_off boolean
FETCH get_perms into #perms, #on_off
while(##sqlstatus=0)
BEGIN
if exists ( select 1 from permissions where userspermsUserid=#new_id and userspermsPermID=#perm )
BEGIN
update permissions set userspermsPermission=#on_off where userspermsUserid=#new_id and userspermsPermID=#perm
END
else
BEGIN
insert permissions (userspermsUserID, userspermsPermID, userspermsPermission) values (#new_id, #perms, #on_off)
END
FETCH get_perms into #perms, #on_off
END
CLOSE get_perms
DEALLOCATE CURSOR get_perms
end
. I get the following error when trying to create it:
/* SQL Error (1064): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'as declare #new_id varchar(30) declare #old_id varchar(30) declare get_perm' at line 2 */
. Does anyone know what I need to do to make this work?
You need to have BEGIN tag after CREATE PROCEDURE clone_perms and not AS
don't use an # to start local (declared) variable names, that's only for user variables you create with the
SET #varname=value;
statement. you'll also need to terminate your statements with a semicolon. that's the cause of the latest error, there's no ; after your first declare statement.
I tried this example via phpMyAdmin
http://www.databasejournal.com/features/mysql/article.php/3569846/MySQL-Stored-Functions.htm
mysql> DELIMITER |
mysql>
CREATE FUNCTION WEIGHTED_AVERAGE (n1 INT, n2 INT, n3 INT, n4 INT)
RETURNS INT
DETERMINISTIC
BEGIN
DECLARE avg INT;
SET avg = (n1+n2+n3*2+n4*4)/8;
RETURN avg;
END|
This worked
DELIMITER |
The next statement gave:
Error
SQL query:
CREATE FUNCTION WEIGHTED_AVERAGE(
n1 INT,
n2 INT,
n3 INT,
n4 INT
) RETURNS INT DETERMINISTIC BEGIN DECLARE avg INT;
MySQL said: Documentation
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 5
As it is mentioned in the link:
As mentioned in the first stored procedures tutorial, we declare the "|" symbol as a delimiter, so that our function body can use ordinary ";" characters
You can write a lot of commands on different consecutive lines. But usually only when ';' is met, the hole statement is executed.
Putting a DELIMITER character means that MySQL should wait until this is closed no matter if you use ';' or not and only then to interpret what is between delimiters.