Multivalue insert example - it works manually but NOT in mySQL stored procedure.
INSERT INTO input_data1(mobile) VALUES (9619825525),(9619825255),(9324198256),(9013000002),(9999999450),(9999999876) ;
i am getting syntax error near "str" word in below proc, Can any one let me know how to implement this multi value INSERT work in procedure?
DELIMITER |
DROP PROCEDURE IF EXISTS mobile_series1;
CREATE PROCEDURE mobile_series1(IN str text)
LANGUAGE SQL READS SQL DATA
BEGIN
DROP TABLE IF EXISTS input_data1 ;
CREATE TEMPORARY TABLE input_data1 (mobile varchar(1000)) engine=memory;
INSERT INTO input_data1(mobile) VALUES str;
END |
DELIMITER ;
Thanks in Advance.
I don't have a MySQL server so there's probably syntax errors and +1 errors (i.e. may not be capturing the last on the list, may not progress past the first item etc, problems fixed by putting a +1 in the code), but you basically want to replace your INSERT statement with something this.
DECLARE INT _CURSOR 0;
DECLARE INT _TOKENLENGTH 0;
DECLARE VARCHAR _TOKEN NULL;
SELECT LOCATE(str, ",", _CURSOR) - _CURSOR INTO _TOKENLENGTH;
LOOP
IF _TOKENLENGTH <= 0 THEN
SELECT RIGHT(str, _CURSOR) INTO _TOKEN;
INSERT INTO input_data1(mobile) VALUE _TOKEN;
LEAVE;
END IF;
SELECT SUBSTRING(str, _CURSOR, _TOKENLENGTH) INTO _TOKEN;
INSERT INTO input_data1(mobile) VALUE _TOKEN;
SELECT _CURSOR + _TOKENLENGTH + 1 INTO _CURSOR;
SELECT LOCATE(str, ",", _CURSOR + 1) - _CURSOR INTO _TOKENLENGTH;
END LOOP;
Your function call would then be something like
EXEC mobile_series1('9619825525,9619825255,9324198256')
Related
I'm in my first databases class and I'm trying to write a conditional block for a mysql procedure.
This is the procedure:
delimiter //
CREATE PROCEDURE add_ascent(IN cid INT, IN pid INT)
BEGIN
DECLARE count_ascents INT;
SET count_ascents = 0;
SELECT COUNT(`cid`) INTO count_ascents FROM ascents WHERE `cid`=cid AND `pid`=pid;
IF count_ascents < 1 THEN
INSERT INTO ascents (`cid`, `pid`) VALUES (cid, pid);
UPDATE climbers SET climbers.ascents = climbers.ascents + 1 WHERE climbers.id=cid;
UPDATE problems SET problems.ascents = problems.ascents + 1 WHERE problems.id=pid;
END IF;
END;
//
delimiter ;
The goal of the procedure is to only perform the insert and updates if the (cid, pid) pair is not in the the ascents database. After testing, the program doesn't seem to go into the if block at all.
FYI, you might want to consider using an UPSERT, instead of "select/if/insert". For example, mySQL offers INSERT ON DUPLICATE KEY UPDATE.
Here, I suggest:
giving your parameters a DIFFERENT name than the column name, for example iCid and iPid, then
Typing SELECT COUNT(cid) INTO count_ascents FROM ascents WHERE cid=iCid AND pid=iPid and checking the result.
I created a function:
DELIMITER $$
DROP FUNCTION IF EXISTS `heena`.`customer_id`$$
CREATE DEFINER=`root`#`localhost` FUNCTION `heena`.`customer_id`(
a varchar(20),
b varchar(20)
) RETURNS varchar(50) CHARSET latin1
DETERMINISTIC
BEGIN
RETURN CONCAT(
(select ((id), 0) + 1
from heenaj),
substring(a,1,2),
substring(b,1,2));
END;$$
DELIMITER ;
The code executed fine, but when I'm inserting a value using:
insert into heenaj
(c_id,name,number)
values
(customer_id121("abcd",9868275817),"abcd",9868275817);
It shows an error:
Column 'c_id' cannot be null
There's something wrong with your RETURN.
Maybe you are meaning to do this, although I am only guessing:
RETURN CONCAT(
(select ifnull(max(id), 0) + 1
from heenaj),
substring(a,1,2),
substring(b,1,2));
sqlfiddle
Then, you're calling customerid121() not customer_id(). Could this be typo?
Also, in looking at what you're trying to do: do you want your id as auto_increment and just want to have c_id as the id, concatenated with first 2 characters of name and concatenated with first 2 characters of number?
I suggest another solution. It might be nicer to drop your function and create a TRIGGER for before INSERT, like this:
CREATE TRIGGER set_customer_id BEFORE INSERT on heenaj
FOR EACH ROW
BEGIN
SET NEW.c_id = CONCAT((SELECT IFNULL(MAX(id),0)+1 FROM heenaj),SUBSTRING(NEW.name,1,2),SUBSTRING(NEW.number,1,2));
END/
This way, when you insert you can just ignore c_id and insert like this:
insert into heenaj(name,number)
values ("abcd",9868);
The trigger will handle the setting of c_id for you.
sqlfiddle for TRIGGER
P.S. To create the trigger (in the sqlfiddle), I selected / as my delimiter. You might change that / to $$, since you're setting delimiter as $$.
Hi I am trying to create a database that will check out document numbers per project. I am trying to keep the db server action limited to stored procedures.
The numbering system goes
XXXX-YY-ZZZZ
XXXX is the job number
YY is the document type table reference
ZZZZ is the document specific number and increments from 1 up for each type in each job...
Because of the numbering system, I can not use an auto incremented column... That would be nice... I would have to generate a table for each document type, for each job... unless anyone sees anything I do not? I am pretty new at this, so any help would be appreciated.
Here is what I have for my procedure that I am having issues with.
DELIMITER $$
DROP PROCEDURE IF EXISTS ADD_NEW_DOC$$
CREATE DEFINER=RMDNA#localhost PROCEDURE ADD_NEW_DOC(IN in_job INT, IN in_type VARCHAR(2), IN in_name VARCHAR(32), IN in_desc VARCHAR(512))
BEGIN
SELECT MAX(doc_id) INTO #highnum FROM Doc_Entries WHERE job_id = in_job AND doc_type_ID = in_type$$
IF #highnum = null THEN SET #newnum = 1$$
ELSE SET #newnum = #highnum + 1$$
END IF$$
insert into Doc_Entries (job_id, doc_type_ID, doc_id, doc_name, doc_desc) values (in_job, in_type, #newnum, in_name, in_desc)$$
SELECT #newnum$$
END$$
DELIMITER ;
and the error I am getting is:
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 2
UPDATE:
My attempt has refined...
DROP PROCEDURE IF EXISTS ADD_NEW_DOC;
DELIMITER //
CREATE DEFINER=RMDNA#localhost PROCEDURE ADD_NEW_DOC(IN in_job INT, IN in_type VARCHAR(2), IN in_name VARCHAR(32), IN in_desc VARCHAR(512))
BEGIN
SELECT MAX(doc_id) INTO #highnum FROM Doc_Entries WHERE job_id = in_job AND doc_type_ID = in_type;
IF (#highnum is null) THEN SET #newnum = 1;
ELSE SET #newnum = #highnum + 1;
END IF;
insert into Doc_Entries (job_id, doc_type_ID, doc_id, doc_name, doc_desc) values (in_job, in_type, #newnum, in_name, in_desc);
SELECT #newnum;
END//
DELIMITER ;
Working good now. Learned how to use delimiter properly and fixed a few things that then became obvious.
I'm writing a function that I need to use either a TABLE variable for (I hear they don't exist in MySQL) or a temporary table.
However, it seems that temporary tables only seem to work in stored procedures, not functions. I keep getting this error:
Explicit or implicit commit is not allowed in stored function or
trigger.
What I'm trying to build is a solution to an earlier question of mine. It's a function that receives a start date, an end date, and a comma-deliminated string. It first finds all the months between the start and end date and saves them as individual records in the first temporary table. It then parses out the comma-deliminated string and saves those into a second temporary table. Then it does a select join on the two, and if records are present, it returns true, otherwise false.
My intention is to use this as part of another queries WHERE clause, so it needs to be a function and not a stored procedure.
How can I use temporary tables in stored functions? And if I can't, what can I do instead?
Here's my (currently broken) function (or as a gist):
-- need to parse out a string like '4,2,1' and insert values into temporary table
-- MySQL doesn't have a native string split function, so we make our own
-- taken from: http://blog.fedecarg.com/2009/02/22/mysql-split-string-function/
DROP FUNCTION IF EXISTS SPLIT_STR;
CREATE FUNCTION SPLIT_STR(x VARCHAR(255), delim VARCHAR(12), pos INT) RETURNS VARCHAR(255)
RETURN REPLACE(SUBSTRING(SUBSTRING_INDEX(x, delim, pos), LENGTH(SUBSTRING_INDEX(x, delim, pos -1)) + 1), delim, '');
-- need to find all months between the start and end date and insert each into a temporary table
DROP FUNCTION IF EXISTS months_within_range;
DELIMITER //
CREATE FUNCTION months_within_range(starts_at DATE, ends_at DATE, filter_range VARCHAR(255)) RETURNS TINYINT
BEGIN
DROP TABLE IF EXISTS months_between_dates;
DROP TABLE IF EXISTS filter_months;
CREATE TEMPORARY TABLE months_between_dates (month_stuff VARCHAR(7));
CREATE TEMPORARY TABLE filter_months (filter_month VARCHAR(7));
SET #month_count = (SELECT PERIOD_DIFF(DATE_FORMAT(ends_at, "%Y%m"), DATE_FORMAT(starts_at, "%Y%m")));
-- PERIOD_DIFF only gives us the one month, but we want to compare to, so add one
-- as in, the range between 2011-01-31 and 2011-12-01 should be 12, not 11
INSERT INTO months_between_dates (month_stuff) VALUES (DATE_FORMAT(starts_at, "%Y-%m"));
SET #month_count = #month_count + 1;
-- start he counter at 1, since we've already included the first month above
SET #counter = 1;
WHILE #counter < #month_count DO
INSERT INTO months_between_dates (month_stuff) VALUES (DATE_FORMAT(starts_at + INTERVAL #counter MONTH, "%Y-%m"));
SET #counter = #counter + 1;
END WHILE;
-- break up the filtered string
SET #counter = 1;
-- an infinite loop, since we don't know how many parameters are in the filtered string
filters: LOOP
SET #filter_month = SPLIT_STR(filter_range, ',', #counter);
IF #filter_month = '' THEN LEAVE filters;
ELSE
INSERT INTO filter_months (filter_month) VALUES (#filter_month);
SET #counter = #counter + 1;
END IF;
END LOOP;
SELECT COUNT(*) INTO #matches FROM months_between_dates INNER JOIN filter_months ON months_between_dates.month_stuff = filter_months.filter_month;
IF #matches >= 1 THEN RETURN 1;
ELSE RETURN 0;
END//
DELIMITER ;
drop table statements cause an implicit commit, which is not allowed in a mysql function. drop temporary table doesn't cause the commit though. if you're not worried about regular (non-temporary) tables named months_between_dates or filter_months existing you should be able to change
DROP TABLE IF EXISTS months_between_dates;
DROP TABLE IF EXISTS filter_months;
to
DROP TEMPORARY TABLE IF EXISTS months_between_dates;
DROP TEMPORARY TABLE IF EXISTS filter_months;
I need to have a function that increments the certain ID in a table (like auto_increment)
I have smth like this
DELIMITER $$
DROP FUNCTION IF EXISTS `GetNextID`$$
CREATE FUNCTION `GetNextID`(tblName TEXT, increment INT)
RETURNS INT
DETERMINISTIC
BEGIN
DECLARE NextID INT;
SELECT MAX(concat(tblName, 'ID')) + increment INTO NextID FROM concat('table_', tblName);
## SELECT MAX(articleID) + increment INTO NextID FROM table_article;
RETURN NextID;
END$$
DELIMITER ;
INSERT INTO `table_article` ( articleID, articleAlias ) VALUES ( GetNextID('article', 5), 'TEST' );
So i pass two variables: tblName (without table_ prefix), and the increment number. The commented line - SELECT query inside the function itself - works well, but i want to dynamically pass table name to the function and so get data from a certain col of certain table. What am I doing wrong?
The error is:
#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 '('table_', tblName);
RETURN NextID;
END' at line 6
if i simply try to select max value in such a way
SELECT MAX(articleID) + increment INTO NextID FROM tblName;
The error reports that tblName does not exist. How can i tell MySql that this is actually a var passed to the function, not an exact table name? If it is possible.
you need something like
prepare stmp from concat('SELECT MAX(ID) + ', increment, ' INTO NextID FROM table_', tblName);
execute stmp;
deallocate prepare stmp;