Query Execution Status
How can we know that , the last executed query status like executed successfully or not.
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How To Get Time Execution Of A Query?
Do you know how to get the time that a query executes? Is there a formula on how to get it? Example: Note: I have 5000 data in the table cars $result = mysql_query("Select * from cars"); Question: How to get time of executing the query above?
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How To Get Query Execution Time
How to get query execution time in "mysqlquery.log" files I am using: Linux 7.3 mysql 4.1 How to display the query execution time for each and every query in log files. i have configured "slow-log-query" and "mysqlquery.log" in "my.cnf" is pasted below. log = /var/lib/mysql/mysqlquery.log log-slow-queries = /var/lib/mysql/slowquery.log long-query-time = 0 slow-launch-time = 1 then i can get a output in "mysqlquery.log" like, 070830 9:24:29 2 Connect root@localhost on 2 Init DB jbdatabase 2 Query select count(*) from vacancy1_table 2 Query select category,listcategory from category_t able order by category 2 Quit but i need to display the "timetaken of each end every executed query" along with the query in the above logfile like, E.g:select category,listcategory from category_table order by category(0.03 secs).
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Query Execution Too Slow!
I have migrated from MySQL 4.1.22 to MySQL 5.0.45. Many of the queries that were working on my old server is working too slow in my new server(MySQL version 5.0.45). I am not aware why is this happening. Actually there is no error message or query failing. The query is executing, but the time taking to execute the query is too long. This problem is not occurring for all queirs, but only for some complex queires, that is queries with Left Join or Right Join, Group By etc. I have also checked the MySQL details through SSH(that is by mysql> SHOW VARIABLES;) Now one thing I found is there is lot of difference in key_buffer_size, table_cache, join_buffer_size, read_buffer_size, read_rnd_buffer_size , table_cache etc between my new server MySQL and old server MySQL. Will this be the reason for query execution taking too much time. Can any one guide me why this is happening. The striking thing is that these quires was working very much fine and faster in my old server.
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Last Query Execution Time
Is there a way to retreive the elapsed time for the prevously executed query? Alternatively, Is there a way to query the current time in fractions of a second? I am attempting to use a stored procedure to execute and track the time it takes to run some queries and other commands. The logic of the stored proc would go something like this.....
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Query Log With Execution Time?
I have developed a big property portal web site and have probably written about 1000 different SQL queries in the process (OK, maybe only 500 or so) but a lot. The site is now gaining popularity and although it is on a dedicated server I want to make sure that everything is running smoothly. I have optimised several tables with indexes etc. and have sped up certain tasks, but would like to know if there are any other queries that take too long and should be optimised. Is there a way to log all queries together with the time it took to execute the query? Is this already logged and if so - where is it?
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Slow Query Execution
Right now I am fazing one issue which is getting hell out of me. I am explaining the issues step by step. 1.I have one site running from last 3 years with large database and there is one main table which has maximum load. 2.Now, I have redesigned the site with lots of changes within this table too. 3.The problem is that the server is same, queries are same but output in the new database is taking 50 times more execution time. 4.I also just copy paste the table, and fire the same query... Strange even that is not working... Is it something where newly added table or database is having issues in the server? I have tried all, compared the structures of the data and table but still the query result is too slow on live testing sever. While same query in main site of same server is running perfectly.
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Query Execution Time In PHP Script
I am interested in displaying the query execution time as mysql does from the console, but using php. I've looked everywhere for this and can't find anything. Does anyone know how to display this information to the browser via php? The information must be there since the console provides it. I checked the php function mysql_info(), but that only shows records, duplicates, deleted, matches, changed, warnings, etc. Didnt see any specific php function for getting execution time.
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Report Of Query Execution Times
Does mysql have a tool to record and report a list of all queries executed and how long it took to execute each query? If not can anyone suggest a tool I can use to do this? I've heard of mysql query profiler but does it capture queries from all sessions?
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Query Execution Time & Mysql_stat
I am using mysql for my shopping site,Performance of site very slow then I used mysql_stat php function to find out how many slow queries,it shows 20. Now my question is any function in mysql(or)PHP to show 20 slow queries.
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Slow Query Execution With Strange Issue
Right now I am fazing one issue which is getting hell out of me. I am explaining the issues step by step. 1.I have one site running from last 3 years with large database and there is one main table which has maximum load. 2.Now, I have redesigned the site with lots of changes within this table too. 3.the problem is that the server is same, queries are same but output in the new database is taking 50 times more time. I have tried all, compared the structures of the data and table but still the query result is too slow on live testing sever. While same query in main site of same server is running perfectly. Have any one fazed such and issue? Please help me out of the situation as site is ready but I m not able to put new version live.
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Check Query For Syntax Prior To Execution
I was wondering if it was at all possible to check an SQL query prior to execution for syntax errors? A method which wouldn't alter the data to which the SQL statement related to. I'm guessing you could perform a transaction of sorts, but is there another way?
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Slow Execution For A Left Outer Join Query
Whats likely to be the cause of slow execution for a left outer join query? The original query joins three tables but even if I narrow it down to one it still takes a long time to execute. $query = "select distinct materials.* from materials"; $query .= " left outer join materials_products on materials.material_id = materials_products.material_id"; There's 914 rows in the materials table and 1348 row in the materials_products table Is it likely to take a long time for this amount of data or is there likely to be a problem in the table(s) set up or query?
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Ending Of Execution
is it important to free resources and end connection after every code execution... i found a few codes examples and they don't usually end with DIE or EXIT... so i'm curious if thats a security risk?
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Execution Time
After we execute a statement in mysql, it reports the query execution time in the format: n rows in set (t sec). We may do something like this to get the execution time: $time_start = getmicrotime(); mysql_query( "" ); $time_end = getmicrotime(); $time = $time_end - $time_start; But it includes extra CPU time to run two getmicrotime() functions and one subtraction. Is there any way to obtain the execution time directly from mysql without running extra functions or calculations?
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Log Execution Queries
I am writing a program in python, and I use mySql v1.2.12, I wanna know If mysql logs any command such as wxecution commands(like INSERT, UPDATE, DELETE), if yes how can i access them? thanks all
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Asynchronous Execution
I have the following situation php file 1: an SQL writes data to the database php file 2: an SQL reads data from the database Some users report errors that MIGHT be due to the SQL in file 1 not being executed, before they click on a link to open file 2. So they get out of date information. I want to know if this is technically possible, whether this might indeed be the problem, that if a database is very busy, that SQL statements are queued and data retrieval may read obsolete out of date information, because the data storage SQL has not been executed yet. And if this is the problem, I would like to wait in file 1 until the data has actually been written.
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Getting Table Status
Is there a really fast way to see if a table is marked as crashed? It seems check table and myisamchk are too slow large MyISAM tables (> 38GB) for such an operation.
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STATUS Table
I have a STATUS table consisting of a uid and description, that looks like this: 1 Accept 2 Accept with corrections 3 Reject I have a CHOICE table which referrs to the uid of the STATUS table, in one of it's columns.Would it be better to just have these values appear in an enumerated value in the CHOICE table, instead of referring to the STATUS table
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MIN And MAX Status With Each Records
This is my first post in this forum I have a table of categories Id mai_cat Category_Name Order 56 1 category11 2 57 1 category12 3 58 1 category13 1 59 2 category21 1 60 2 category22 2 61 2 category23 3 62 2 category24 4 63 3 category31 1 I am trying to get the result as Id mai_cat Category_Name Order MIN MAX 58 1 category13 1 Y N 56 1 category11 2 N N 57 1 category12 3 N Y 59 2 category21 1 Y N 60 2 category22 2 N N 61 2 category23 3 N N 62 2 category24 4 N Y 63 3 category31 1 Y Y when tried to use the IF with MAX function but it needs the GROUP BY Clause, so the result is varying ie if i give group by main_cat only one rec from each main cat is displaying and when i gave group by Id the MAX() is not working as i wanted I also tried CASE WHEN...END instead of IF But i am unable to get the desired output
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Old E_Fail Status
I know I have seen this question hundreds of times but the circumstances and control of this error are within my reach. I have a database which contains a decimal field. This database is linked to a data aware component - a DB grid in Delphi. If the value in the field goes to two digits (>=10 that is) then the error occurs. I have tinkered with the width in the console but with no improvements. I have tried all setting on the grid to overcome this. I can use an SQL to retrieve data without a problem and it will happily show those values over 9.9999. But the visual component causes it to topple each time.
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How To Get Server Status?
I worked a long time with MsSQL and wrote a small program in C# that shows me the status of my three MsSQL-Servers (Active Users, Active Querys, Networkusage, Ram, Free ram, Swap, etc...). Is there a way to get this information from my seven MySQL Servers with php or java to display it? I would like to write a cronjob, which gets this information every 10min and write it to a separate table and or logfile on a dedicatet server. My first thought was to open a Port with PHP, send some commands and read the results. Is this possible with MySQL? And if its possible, which Port and which commands do I have to use?
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MIN And MAX Status With Each Records
I have a table of categories: Id mai_cat Category_Name Order 56 1 category11 2 57 1 category12 3 58 1 category13 1 59 2 category21 1 60 2 category22 2 61 2 category23 3 62 2 category24 4 63 3 category31 1 I am trying to get the result as Id mai_cat Category_Name Order MIN MAX 58 1 category13 1 Y N 56 1 category11 2 N N 57 1 category12 3 N Y 59 2 category21 1 Y N 60 2 category22 2 N N 61 2 category23 3 N N 62 2 category24 4 N Y 63 3 category31 1 Y Y when tried to use the IF with MAX function but it needs the GROUP BY Clause, so the result is varying ie if i give group by main_cat only one rec from each main cat is displaying and when i gave group by Id the MAX() is not working as i wanted I also tried CASE WHEN...END instead of IF But i am unable to get the desired output
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Show Status
Just edited my.cnf file in the vi editor and saved it. The file is saved and what I edited I can see by vi /etc/my.cnf. /etc/init.d/mysqld restart it stopped [ok] it start [ok] Needed to verify the lines I entered in default my.cnf are in effect... max_connections=200 key_buffer_size=384M max_allowed_packet=16M table_cache=256 >mysql SHOW STATUS But it's not showing these configurations, not the default values, not even the changes I made in my.cnf? How I can verify that what I changed is in effect.
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Mysql WHERE Condition Execution
I have 2 columns and I search rows with two conditions. SELECT * FROM table WHERE A = '$a' AND B = '$b' How can I make mysql search columns with A condition first and after that within these condition B. I would like to know, how mysql search works. How can I tell mysql how to search?
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Improve The Execution Time
i am new to db2 want to ask questions about the performance of my sql commands for a view based another 3 views the sql commnads are as following: create view b_central_subgroup as select communicator as central_member, project_id as project_id from b_normalized_communicator intersect select initiator as central_member, project_id as project_id from b_normalized_initiator intersect select monospeaker as central_member, project_id as project_id from b_normalized_monospeaker it takes 4.4 seconds to execute this sql. it likes that the time is the summ of the other three views. Can the execution time be reduced through some other methods? If it is possible , then how ?
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Measure Execution Time
I would like to measure the execution time of my queries in order to evalutate the performance in/decrease for different changes. Even if I use 'sql_no_cache' the query executes MUCH faster the second time I run it, and is therefore not representative of the true performance. How to I avoid this problem? I'm using MySQL 4.1 on a windows server 2000. I be glad to get an explanation to why the query executes faster the 2nd time.
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Mysql Execution Sequence
I need to retrieve the last value from a column in a mysql table, perform some actions on it, then add 1 to the original value and store a new entry. I am worried that if multiple users access the database at the same time I will end up with duplicated 'new values'. Does mysql complete execution of a script before it allows access to another user or do I need to 'lock' the table in some way while the script executes?
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Show Status Data
I'm developing a net-snmp module that executes a 'show status' command on a MySQL server and advertises the values. My choices seem to be super concrete: one server, one set of results, the variables don't change, ever. moderatly concrete: multiple possible servers, one set of results each, the variables don't change, ever. abstract: multiple servers returning a table of some results. Things are what they are when they are. The problem with the obvious choice is that it's a table of tables of values, and if you've used SNMP much you know where that leads, and try programing for it. So the question is, are the values that it returns likely to be added to/removed from the show status command likely to change much, or can I just write a long but easy to code for MIB with each of the values.
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Delivery Status Notification
This multi-part MIME message contains a Delivery Status Notification. If you can see this text, your mail client may not be able to understand MIME formatted messages or DSNs (see RFC 2045 through 2049 for general MIME information and RFC 1891 through 1894 for DSN specific information). Code:
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Determine Replication Status
I have configured a master/slave replication setup. The idea is only to allow changes made to the master databases. However, I would like to know is there a way to tell there are changes made to slave which in turn breaks the replication.
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E FAIL STATUS ERROR
I am using ADO and VB6 With MySQL 5. Some times when i am selecting records from my table it returns an Error MySQL ODBC Error Returned WIth an E FAIL Status. i am executing the query "SELECT * FROM MyTable" it will work some times without this error.
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Performance :: Check Status
I have problems with mysql-performance. When I check "Status", there is written: 23% of all questions are "change db". What does it mean? Select Task are only 13%. Could this be the reason of performance problems?
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Status Code: 0 Error
I have been using mysql on my localhost wamp server for a while. After modifying some php files with new mysql queries, I occasionally get the following error message, even though the data is retrieved without problem from the database: “problem retrieving data from server, status code: 0â€
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Assigning Status As Reserved
------- tbl_dates.id tbl_dates.week_date -------- tbl_cottages.id tbl_cottages.cottage_name -------- tbl_booking.id tbl_booking.cottage_name tbl_booking.book_date ------- tble_dates.week_date contain dates in the format 'January 1 - January 7'. the tble cottages contain a list of properties the tble_booking contains entries which I input when a cottage becomes booked so I know when the cottage is unavailable on what dates. What I want to be able to do is cross reference the top 2 tables against tble_booking. So if the tble_booking contains ID = 1 Cottagename: Bluebells Week_Date: January 1 - January 7 If some one clicks on the webpage to check the availabilty for the week 'January 1 - January 7' the cottage will be marked 'reserved' and the rest will be marked 'available'. I have tried doing it with a LEFT OUTER JOIN but it marks them all as reserved? SELECT tbl_cottages.id, tbl_cottages.cottage_name, tbl_bookings.id, tbl_bookings.book_date, tbl_bookings.book_cottage, FROM tbl_cottages LEFT OUTER JOIN tbl_bookings ON tbl_bookings.book_date = tbl_cottages.cottage_name WHERE tbl_bookings.book_date = '#URL.calendar_date# If you need any more info please ask!!
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Copying Table To Disk During Execution
I seem to be having an issue with a query's results being paged out to disk during runtime. I notice in processlist it saying "Copying to tmp table on disk". select col1, col2, count(ip) as 'COUNT' from db.table group by 2 order by 1, 3; None of the columns are a primary/foreign or an index. This query returns 92K rows and has taken anywhere from 50 seconds to run to over 1.5 minutes. The table size on disk is around 33MB. After doing some research i found that i should be changing the tmp_table_size system variable. Originally it was set to the MySQL default, 33554432. I set the varaible to 90,000,000 and it still started paging out to the disk (this was the only query running at the time). I would think that 90MB in space would have been enough to handle the query since that would assume over 600K row size. I actually had some trouble setting the tmp_table_size for the global variable but was able to change it as a session variable. I have also tried altering the query_cache variable (which has only slowed the query down - currently it sits at a size of 50MB) and also the sort_buffer_size but neither have made a difference. What is the magic variable that i should be messing with?
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Database Size And Max Execution Time
I have now got a large database that is getting to a size of about 4Mb when downloaded (dumped / uncompressed).On my Web server everything seems fine. But when using said database on my home server (localhost) I am recieving Max Execution time of 30 second errors constantly.How can I stop this from happening and is it likely to start happening on my web server soon?
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Optimization :: Standards For Show Status
I'm running MySQL 5.0.19 (windows), and running mostly well, but in some cases seems too slow. I've been optimizing SQL as much as possible, indexing important fields, using OPTIMIZE TABLE to clear out deleted records, etc. I would also like to adjust the my.ini settings to make sure things are set there to be as optimal as possible. My question is, when I look at the statistics in SHOW STATUS, is there any guide for what to look for as far as what's running optimally or needs improvement? I'm connecting to MySQL from ColdFusion.
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SHOW TABLE STATUS FROM DB_NAME
SHOW TABLE STATUS FROM db_name LIKE 'tbl_name'; **The command above is to show all the properties under tbl_name. My question is, how can I get the properties in certain condition. Let's said under tbl_name contain a column name call type and it differential with A and B. So how can I get those properties where the type='A'?
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'Show Table Status' Speed
if anyone knows which is faster.. "SHOW TABLE STATUS LIKE '[tablename]';" vs. "SELECT COUNT(*) FROM [tablename];" I'm trying to pick between these two queries (in order to get the size of the table), but want the faster of the two.i expect the table to be very large (millions of rows).
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