|Why does MySQL procedure stops executing upon running into an error? How to I allow it to continue?|
I finally figured out the solution.
I would like to post the answer to help out anyone that is running
into the same issue.
The solution is to DECLARE CONTINUE HANDLER FOR SQLEXCEPTION
Continue Handler will allow the code to run even if there was an
error. from there I set the sqlstate and errorno then I store them and
Here is my final code.
|mySQL get all possible combinations of certain rows|
What you are trying to do is to generate the Power Set of the set of
all elements with field Text == <parameter>. As you already
found out, this number grows exponentially with the length of the
If you can solve it in other language (say, php), take a look at this:
Finding the subsets of an array in PHP
|MySQL filter out self-references|
Are looking for something like this ::
Select a.id, a.start, a.parent_id from
event a , event b
Where a.parent_id in (<list_of_calendars>)
And a.start >= 'some date'
And b.parent_id = a.parent_id
And b.start = a.start
And a.id != b.derivedfrom_id
|mysql 5.5.24 - weird [Err] 1054 - Unknown column|
See this line of your query:
INNER JOIN questions_vitesse ON QUESTION.reponses_vitesse =
There are a trailing ` character at the end of it. But no opening.
|Timediff in mysql not returning result|
As per the docs:
TIMEDIFF() returns expr1 – expr2 expressed as a time value. expr1
and expr2 are time or date-and-time expressions, but both must be of
the same type.
You're feeding in a time (curtime()) and a datetime (approved). Change
select timediff(curtime(), time(approved)) ...
instead, assuming approved is a datetime type, and not char/varchar.
|How to delete half the records of a table?|
It looks like the relationships exist in pairs. So user A has user B
as a friend and user B has user A as a friend. If I read your question
right, you want to remove one of the relationships but leave the
Since they have different user_ids, you could delete all the rows
where user_id is greater than friend_user_id. That would delete one of
the relationships but keep the other.
|Install MariaDB Archive Engine|
Try to install plugin using SQL shell.
MariaDB> INSTALL PLUGIN archive SONAME 'ha_archive.so';
MariaDB> show engines G
I have installed mariadb-10.x on ubuntu and ARCHIVE is by default
MariaDB> show engines G
*************************** 7. row ***************************
Comment: Archive storage engine
|Unable to create a simple database in mySQL|
Basic syntax of CREATE DATABASE statement is as follows:
CREATE DATABASE DatabaseName;
Try Like Below...
CREATE DATABASE hello;
|sql update with join|
The set goes before the where:
UPDATE nymb_posts JOIN
ON nymb_postmeta.post_id = nymb_posts.ID
SET nymb_posts.Guid = nymb_postmeta.meta_value
WHERE nymb_postmeta.meta_key = "_wp_attached_file" AND
nymb_posts.post_type = "attachment" AND
nymb_posts.post_parent = "0";
|How do you subtract a count result from another count result to satisfy a where clause in mysql?|
Would something like this work in your scenario?
WHERE attendance <> 0 OR attendance is NULL
GROUP BY class_id
HAVING COUNT(class_id) < 6
Alternatively the more long-winded:
SELECT class_id FROM
SELECT class_id, count(*) as cnt
WHERE attendance <> 0 OR attendance is NULL
GROUP BY class_id
|Scalar query for fetching records from 2 tables|
This needs joining the tbl_country two times something as below. Note
that the query is using inner join so both bco and wco should have
matching record in country table, if not then just use left join
c1.country as Bco,
c2.country as WCO
from tbl_employee e
join tbl_country c1 on c1.cid = e.bco
join tbl_country c2 on c2.cid = e.wco
|MySQL Order by string field as date|
Since the dates are stored in the format Sun Nov 09 2014 18:34:39
str_to_date that you are using will return null
mysql> select STR_TO_DATE('Sun Nov 09 2014 18:34:39 GMT+0530
(IST)', '%d/%m/%Y') as date;
| date |
| NULL |
The correct format is
mysql> select str_to_date('Sun Nov 09 2014 18:34:39 GMT+0530
(IST)','%a %b %d %Y %H:%i:%s') as date ;
|Difference between varchar(10) and varchar ( 10 char) in sqlplus|
The difference is:
varchar(10 CHAR) is static and will use always 10 spaces.
varchar(10) is dynamic and will only use the space he needs.
I use varchar(x) almost in all cases. If you are sure a cell is has
always the same amount of charachters you could use varchar(x CHAR).
|MySQL INSERT into junction table|
Q2: When you want to, for example, insert records into the table
'employee_team' you do this as follows:
INSERT INTO employee_team VALUES ('emp_id', 'team_id');
emp_id is the id of the employee you want to couple (add) to a team
with id: team_id; this means you have to create employees and team(s)
|Wordpress SQL Delete Custom Post Types and Meta|
You can delete the data by joining the tables. In WP wp_posts and
wp_postmeta are related with post_id in the wp_postmeta table. Using
the query below it will delete from both tables. However there are
other options as well i.e you can fire a trigger after delete on
wp_posts to delete the data from the related table or a foreign key
constraint with on delete cascade
from wp_posts p
|Insert data from a table to another one in MySQL with where condition|
I have found my mistake. In this query:
hour(from_unixtime(thoiGian)), nhienLieu) in
-- where accountID = 'anhtuaniphone' and deviceID = '14C-10152'
-- and from_unixtime(thoiGian) between
|esporting data from userform of vba excel to mysql|
Siddharth, Check your INSERT query It has 7 paramters and at the time
of passing parameters you have missed comma between Time and Category
"INSERT INTO project505.userdetails (FirstName, Surname, Gender,
Email, LoginDate, LoginTime, CategoryChecked) VALUES (" &
UserForm1.txtFirstname.Value & ", " &
UserForm1.txtSurname.Value & ", " & UserForm1.cbGender.V
|Insert row into table if join doesn't match or field is null|
If I understand correctly, you want to insert a new row only when the
most recent price has changed. I'm a little confused about the
tables. Your query mentions three but your text only mentions two.
I'll assume that product_prices and price_index are the same thing.
INSERT INTO product_prices(product_id, price, date_updated)
SELECT p.product_id, p.product_price, p.date_updated
|Geokit-rails + MySQL: How to speed up search through latitude and longitude?|
Best ways to solve this is using a geospatial index. However neither
geokit nor geocoder do support them for relational databases. The rgeo
gem does. It's however is not well documented. If you are doing some
serios search stuff it probably will make sense to delegate this
problem to elastic_search.
|Mysql timediff skips sunday and some hours of days|
You could introduce your own calendar, that only counts working
seconds starting at some fixed date.
Then you could do calculations as you would with normal timestamps and
get the "working seconds" between two timestamps.
You would need a layer of logic that will transform real dates into
the "working seconds measure".
You would need to decide if
a) Day 1, 18:00h = Day 2, 09:00h
b) Day 1, 1
|Wildfly won't start with parse exception error|
It was a tag issue in the tag mentioned above, the didnt hava a
|case when query in mysql|
Use an else
select CASE DATEDIFF('2014-11-30','2015-11-29')
WHEN 1 THEN '1 Day'
WHEN 7 THEN '7 Days'
|Join Tables with sum in sql query|
RptTempTable.Sum(INVOICETOTAL) should be
The same goes for the other calls to sum()
The table prefix belongs to the column name not the function call.
MySQL will accept this invalid SQL and will return "inderminate" (aka
"random") values instead.
To understand the implications of MySQL's "loose" (aka "sloppy") group
by implementation you might want to read th
|How to use if condition using two tables in MySQL|
Assuming you have the appropriate Primary Key and Foreign Key
relationship between the tables Employee and MobileList you use this
query to find records on the MobileList table for an employee:
Dim myQuery as string
myQuery = "SELECT FirstName, LastName, MobileNumber
|Convert mysql binary to postgresql bytea|
Generate your mysql script of your database using your editor and then
try one of the sql converter. Personally I tried this converter before
and it works well: http://www.sqlines.com/online
|using MINUS in mysql|
MySQL doesn't support MINUS. With one column only you can replace it
easily with NOT IN however:
where point = 'X'
and Conn_id not in
where point in (select distinct(Conn_id) from trail where point =
and Type = 'Backup'
|Access AWS RDS from Private Subnet|
You cannot access instances in a private subnet from the internet -
that is the point of a private subnet.
Either access it thru the bastion machine, or put it in the public
There is a good description of different options here. If you put
your RDS instance into a private subnet, then it is not accessible
from the internet. So if you need access from the internet, it must
|mysql group by and take specific record from right join table|
This is a bit complicated one, however this is one way of doing it
using not exists, for bigger tables its wise to use not exits since
using pivot tables it will not use index.
m.id as member_id,
from company_member_map cmp
join company c on c.id = cmp.companyid
join member m on m.id = cmp.memberid
join member_type mt on mt.id = m.member_type_id
|where clause not working in mysql|
$data = mysql_query("SELECT * FROM smslogs WHERE TRIM(ipaddress) =
This should work if your ipaddress fields contain additional spaces
besides the actual ip address. TRIM would remove them, leaving only
the data that you need.
|? LIKE (column || '%')|
Works for me.
PREPARE withparam(text) AS SELECT $1 LIKE ('/admin/products' || '%');
Your test case doesn't appear to accurately reflect the actual issue
|execute stored procedure automatically when a select query want run in mysql|
You might want to take a look into triggers:
-- update --
I can think of a different possibility. It's ugly:
You could hide your table behind a view by renaming the table and
creating a view with it's original name, then manipulate the data in
the select statement of the view. You just have to be sure the view
returns the column names the or
|Is having flag in database better than querying a table every time?|
It sounds like the design decision you are going back and forth on is
a special case of what is called "materializing a view". A view
stores a query, and makes the result available as a table. A
materialized view stores the result of the query. The pros and cons
you have discovered are real.
In the case of a single flag, that's extremely space efficient, and
therefore time efficient as well.
|MySQL trigger to insert data of first table into second table after insert|
This could be fairly simple assuming that the sc_id is auto
incremented primary key on Student_course
create trigger ins_student_course after insert on Student
for each row
insert into Student_course (s_id,c_id) values (new.s_id,new.c_id);
|Mysql Query Insert querk|
desc is a reserved word in MySQL and must be surrounded with the `
character when being referenced as a column.
desc is a sort order instructing MySQL to sort the returned results in
Please see: http://dev.mysql.com/doc/refman/5.0/en/sorting-rows.html
|homebrew: MySQL not starting, Can't update PID file|
brew install mysql on mac os
These instructions helped me. There was a my.cnf in
/usr/local/opt/mysql/ which seems to have been the problem for me.
|Insert statement to add data to the database|
You seem to me missing some single quotation marks.
Please try this:
Command.CommandText = ("INSERT INTO [TransfersAndAdditionalCourses]
TransferCourse5, AdditionalCourse1, AdditionalCourse2,
VALUES ('" & firstTransferCourse &
|MySql, Without loop filling a table with semi/random data|
MySql doesn't support CTE.
You need a procedure or some tricky queries like this one:
SELECT @id:=@id+1 As id,
@val:=@val+rand() As val
FROM information_schema.tables x
CROSS JOIN information_schema.tables y
|Check which condition failed in complex sql query statement|
If you want to check conditions you will have to move condition
statement in WHERE clause to CASE statement for each condition in
SELECT list apart from columns of table Users.
CASE WHEN status !='inactive' THEN 1 else 0 end as statusTag,
CASE WHEN ptype !='test' THEN 1 ELSE 0 end as ptypeTag,
CASE WHEN p_m_c IN ('pmctest', 'pmctest0', 'pmctest1',
|Getting Error While restoring Mysqldump file|
Triggers should be in the same schema as the table you are inserting
Try changing the name of your test database to sample.
Trigger locations might not be getting resolved after dump as the name
of your new database is not the same as the old one.
For more check this thread