Questions tagged [mariadb-10.1]
MariaDB 10.1 was released as stable (GA) with version 10.1.8 on 17 Oct 2015.
104
questions
0
votes
1answer
27 views
Mariadb is not starting
Please help me with this issue MariaDB not starting. Its a production server so not able to reinstall and clean the data at all.
(This command executed by me)
systemctl -l status mariadb.service
...
0
votes
1answer
41 views
my.cnf for 16 GB Ram Server [MariaDB]
I am very new to this stuff. I just wanted to ask if somebody has a good my.cnf for my MariaDB database because every time i have more than 1000 connections to my website it starts to have hight load ...
0
votes
1answer
12 views
Exclude rows with unique values in one column from grouped mysql query
The following table represents interactions form users with different projects:
id user_id project_id
17373 6336 1001
17374 6336 1001
17375 6336 1001
...
-1
votes
1answer
45 views
SQL Variables inside SELECT query in a function
MariaDB 10.3.14
I have a function that generates the root id in a hierarchy:
The function is this:
CREATE FUNCTION `getRootId`(GivenID INT) RETURNS int(11)
DETERMINISTIC
BEGIN
DECLARE ch INT;
...
0
votes
0answers
21 views
MariaDB Galera: the node, that needs to be joined to others, starts as “wsrep-new-cluster”
We have 4 node Galera Cluster (10.1.14-MariaDB, wsrep_sst_method=xtrabackup-v2).
The 1st node successfully started with "/usr/bin/galera_new_cluster" command. The 2-nd and the 3-rd nodes are ...
1
vote
1answer
31 views
migrate users from mariadb10.1 to mysql5.7
My company is moving our databases from self-hosted mariadb 10.1 to Google CloudSQL (which is essentially MySQL 5.7).
Dumping / restoring our application schemas looks straightforward. However I'm ...
0
votes
1answer
23 views
Set of values of a field of a related entity must be unique: How do I express this constraint in SQL?
Given the following three tables:
Type( id int primary key,
key varchar )
GroupOfInstances( id int primary key,
name varchar )
InstanceOfType( id int primary key,
...
1
vote
0answers
75 views
Connect to MariaDB server fails although port seems to be open
Hello I am trying to connect to an external MariaDB server. The configurations files on this installations are in a different place but I managed to find my way around.
The installation im using is:
...
0
votes
1answer
36 views
SELECT query returns legacy data
My program does r/w operations on a MariaDB table. There are circumstances why it has to do it in concurrent processes. That's why it does it with multiple connections. After a write (UPDATE query) ...
0
votes
0answers
62 views
Implication in Increasing MySQL maximum keys allowed per table
We have a situation where we encounter a MySQL error
ERROR 1069: Too many keys specified. Max 64 keys allowed
In our database (using Magento E-commerce) we need to add 76 indexed key columns but ...
1
vote
1answer
94 views
Cannot remove orphaned InnoDB Temp Table - missing .frm file
For the second time, I have encountered an issue, where our MySQL server (MariaDB v10.1) suddenly threw an error - Could not remove temporary table: './database_name/#sql-4593_791', error: 120.
...
0
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0answers
11 views
Access a file on diffferent drive using connect driver on Windows XP
I need to access a *.DBF file on a network drive using CONNECT database engine.
When I use a file on the C:/ drive, it works as intended, but when I move the file to a remote drive, it says "no such ...
0
votes
2answers
168 views
Max Connections Maria DB
Every time I reboot Mariadb places me the max_connections in 151 and in the my.cnf I have it with 300. Why does this happen?
0
votes
1answer
177 views
Multiple mariadb instances - how to access to the not default instances via command line?
I have a TYPO3 and a Moodle installation on one server with Debian stretch.
Moodle needs some database configurations (MariaDB 10.1.38) which are different from the ones TYPO3 needs.
I made a new ...
2
votes
2answers
149 views
how to improve this query performance
I have an application that's running this following query
SELECT SQL_NO_CACHE p.*,
product_shop.*,
stock.out_of_stock,
IFNULL(stock....
0
votes
1answer
46 views
convert date to timestamp and store into table using trigger mysql
Using trigger I convert DateTime into a timestamp and then store into another table. But somehow convert date into timestamp always affected by timezone so that's why I had use convert_tz of date and ...
0
votes
1answer
110 views
MariaDB Multiline RegEx
I'm running a SQL query in MariaDB under PHPMyAdmin as follows:
select REGEXP_REPLACE(post_content,'(?m)<noindex>[.\r\n]*</noindex>','') from wp_posts where ID = 318
I'm trying to ...
0
votes
1answer
248 views
how to remove/deal with locks in a MariaDB Galera cluster
I have a cluster of 3 nodes running MariaDB Galera cluster, cluster works as expected, I can reboot a single node at a time and in the best case, IST will be used or SST(using rsync) to sync back the ...
0
votes
1answer
39 views
MySQL Conditional Counter Based Other Columns?
I have a query that returns purchases for all customers in a store across a date range. It works fine, but now I've been asked to modify the results so only the first purchase per customer per day is ...
2
votes
1answer
109 views
How to optimize the execution of query that takes too long
I am working with a query that is taking around 53 minutes to execute, which I feel is excessive.
Maria DB version: Server version: 10.1.38-MariaDB-1~stretch mariadb.org
The declaration of the ...
1
vote
2answers
84 views
User rank based on cumulative rows
UPDATE:
Full table schema and data: https://www.db-fiddle.com/f/jT3Mfwd1BJ8GrsBxxPDC8M/1
Table structure (some fields are hidden):
+---------+---------+------------+-------------+-------+-------+
| ...
0
votes
1answer
77 views
Cannot import table due to zombie constraint
I tried to refresh my copy of the production database by emptying and importing a SQL file. I've done it hundreds of times, only this time the import failed.
I tried dropping & recreating the ...
3
votes
2answers
567 views
Unexpected RAM usage on MySQL
We have a server which hosts about 10 customers in a multi-tenant web application, each customer has its own database which is cloned from a template, and each database is a little less than 3000 ...
2
votes
1answer
315 views
Using mariabackup/xtrabackup vs block level snapshots
I am running a mariadb 10.1 instance with all innodb tables and a replication slave in a k8s cluster on Google Cloud's GKE. I have a scheduled mysqldump that runs every night. But for additional ...
0
votes
1answer
479 views
How to restore dump from MariaDB 10.1 to MySQL 5.5
I generate backups of my databases by using mysqldump.exe -u root --all-databases > mariaDbBackup.sql.
When I try to restore my dump by doing mysql -u root -p < mariaDbBackup.sql, I get an
...
0
votes
0answers
19 views
How do I select this pivot query by specified Month
I need help with my mysql pivot code.
Everytime I add WHERE MONTH(attendance_date) = 2 inside @sql_dynamic gets error.
pls help
I have a code:
SET @sql_dynamic:= (SELECT GROUP_CONCAT(DISTINCT ...
0
votes
2answers
97 views
sql select only the last record for multiple values
I have a table called "sessions" with say 4 columns like below
id name s_time f_time
01 abc 10.15 10.45
02 abc 11.05 11.55
03 abc 12.18 13.46
04 abc 15.12 16.53
05 def 10.01 12.58
06 ...
0
votes
2answers
57 views
Time taken to drop/add index is lesser than adding a column. Why is that?
I'm using 10.1.25-MariaDB-1~xenial, but engine is innodb though.
I'm performing an alter by default it does ONLINE alter.
When I add column it takes at least 50 mins for 50G table in our ...
0
votes
1answer
67 views
Mariadb 10.1 / Galera - bootstrap node always doesn't lose quorum
I'm using mariadb10.1.37, wsrep_provider_version 25.3.24(r3825). On my dev cluster (2node+1arbitrator) I found the following behaviour:
node1: bootstrap new cluster (using galera_new_cluster, with pc....
1
vote
3answers
125 views
How can I speed up this query?
Here is the definition of the relevant table:
CREATE TABLE IF NOT EXISTS pricehistory (
id INTEGER(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
price INTEGER NOT NULL,
region ...
0
votes
1answer
45 views
Processes dissappear from processlist (MariaDB)
In my application I need to monitor list of process ids for some database user, so I execute SHOW PROCESSLIST command to get information.
The problem is that sometimes some Id dissapears from command ...
0
votes
2answers
429 views
DELETE inside INSERT Trigger
I wanted to make rotation inside my logs table to store last 100 rows only, and decided to use triggers, as in
create trigger rotate_log
after insert on logs
for each row begin
declare
cnt int;
...
0
votes
2answers
135 views
Create users identified by the same password as another user in MariaDB 10.0.X
How do I create users with the same password as another user in MariaDB 10.x?
I do not know the password of the existing user , so i want to use same hashed password as existing, also do need to ...
1
vote
2answers
3k views
Which file do I need to modify my.cnf MariaDB on Ubuntu 18.04
I want to modify these values:
[mysqld]
key_buffer_size = 256M
max_allowed_packet = 128M
thread_stack = 256K
query_cache_limit = 64M
query_cache_size = 384M
innodb_buffer_pool_size = ...
1
vote
0answers
60 views
MariaDB Cluster Cannot Join new Node
This is status on Main node. it's show some seqno as 17210843
when new empty node is join. i'm found rsync process is ok. but i see difference seqno in linux process
after finish this process my ...
1
vote
1answer
93 views
How does STRICT_ALL_TABLES work with multi-row statements and partial updates?
In the docs for STRICT_ALL_TABLES it states,
For STRICT_ALL_TABLES, MySQL returns an error and ignores the rest of the rows. However, because the earlier rows have been inserted or updated, the ...
1
vote
1answer
278 views
greatest n per group with a 3 tables join
Working on a project with following objects:
People
id
Vehicles
id
model: text
and a link table for owners which passes through owners changes
Owner_Changes
old_person_id
new_person_id
...
0
votes
0answers
495 views
WITH clause in Maria DB
I am trying to run below query in Maria DB (10.1.26-MariaDB-0+deb9u1 Debian 9.1)
with ind as
(
select index_name,
table_name,
group_concat(column_name) column_name,
...
0
votes
1answer
36 views
How can I use user defined variables and `USE`?
I have some schemas, all with the same format. The format is: schema name, underscore, single digit (example: database_1).
How can I loop through all of these schemas easily? I tried SET @num = 1; USE ...
0
votes
1answer
46 views
JOIN on “Latest Match” in “Order”
Having a hard time explaining my scenario and what I am trying to accomplish. I have two tables like so, I have reduced the values for my scenarios
Table1
+----------------------+
| ID | Time ...
3
votes
1answer
837 views
how to get 'Queries per second avg' using SQL (not 'mysqladmin status')
When I start mysqladmin, it prints out several statistics, including "Queries per second avg":
# mysqladmin --defaults-file=../mylogin.cnf status
Uptime: 4568115 Threads: 859 Questions: 3703806462 ...
2
votes
0answers
885 views
Mariadb connection fails through tunnel when bind address = localhost
I have a MariaDB 10.1.26 virtual server running on Debian 9. It is connected to via ssh tunnel and the bind address = localhost. It has been working without fail untill recently.
Now when I connect ...
0
votes
2answers
88 views
WARN max_connections from pt-variable-advisor - what to configure for DBaaS?
Our VM configuration (hosted on Vmware)
# cat /proc/cpuinfo |grep "cpu cores" | awk -F: '{ num+=$2 } END{ print "cpu cores", num }'
cpu cores 32
# free -h
total used free ...
0
votes
1answer
1k views
different settings for max_heap_table_size and tmp_table_size (MariaDB 10.1.x)
I run pt-variable-advisor and got a note about different settings for max_heap_table_size and tmp_table_size.
With a web search I found only old articles (around 2007).
pt-variable-advisor h=...
1
vote
1answer
256 views
pt-query-digest --type binlog (percona-toolkit) gives empty output with MariaDB/Galera 10.1
My installed versions of MariaDB and Percona Toolkit on MacBook:
brew info percona-toolkit
percona-toolkit: stable 3.0.10 (bottled), HEAD
Percona Toolkit for MySQL
https://www.percona.com/software/...
1
vote
1answer
271 views
Mariadb slow_query_log keeps disabling
I'm trying to enable slow_query_log on a Mariadb 10.1.32 server.
When slow_query_log is enabled & flushed, logging is successful (slow queries are recorded and written to the file) for a minute ...
5
votes
1answer
3k views
MariaDB - “ERROR 1205 … Lock wait timeout exceeded; …” when doing multiple parallel UPDATEs affecting different rows
We are using MariaDB 10.1.19 hosting a legacy database. We have an lpr table (on InnoDB) where we want to move from a text column gate to a normalized foreign key gate_id. Our code is doing the UPDATE ...
3
votes
3answers
2k views
Can MariaDB or MySQL cast as bigint, getting an error: … right syntax to use near 'bigint)'?
If I want to take a string and create a table (this fails in strict mode),
CREATE TABLE g
AS SELECT CAST('2147483699' AS int);
How do I tell it that I want a bigint type? I'll also get an int(10) ...
5
votes
2answers
1k views
Hex and Binary Literals in MySQL / MariaDB?
Another question I have pertains to just the & over string types. This question is over the binary-string literals as constructed with B'' or X''.
MariaDB supports binary and hex literals,
...
1
vote
1answer
98 views
does the gcache.size matter during SST? What if more than gcache.size comes in during SST?
During SST my data dir looks like this (there is a hidden dir .sst with xtrabackup):
-rw-rw---- 1 vcap vcap 113 Apr 16 08:13 grastate.dat
-rw-rw---- 1 vcap vcap 265 Apr 16 08:13 gvwstate....
