ANN: Code Factory for MySQL 13.9 released
Hi! SQL Maestro Group announces the release of Code Factory for MySQL 13.9, a powerful Windows GUI solution for querying MySQL databases and managing the data. http://www.sqlmaestro.com/products/mysql/codefactory/ Please note that before Oct 13 you can purchase all our products and bundles with up to 25% discount. Please find details at http://www.sqlmaestro.com/purchase/ Top 10 new features: 1. Improved SQL Editor. 2. Updated SQL Dump wizard. 3. Keyboard-interactive SSH authentication. 4. New Start Page with quick access to recently connected databases. 5. Data import from several files to a single table. 6. Data export to the JSON format. 7. Enhanced data grids. 8. The Script Runner tool. 9. Colored profiles in Database Explorer. 10. New modern progress windows. Full press-release (with explaining screenshots) is available at: http://www.sqlmaestro.com/news/company/codefactories_updated_to_13_9/ Background information: SQL Maestro Group offers complete database admin and management tools for MySQL, Oracle, MS SQL Server, DB2, PostgreSQL, SQL Anywhere, SQLite, Firebird and MaxDB providing the highest performance, scalability and reliability to meet the requirements of today's database applications. Sincerely yours, The SQL Maestro Group Team http://www.sqlmaestro.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: Problem with having
Hi, In your second query, you seem to have MIN(date_time), but you are talking about maximum. So your group by query is actually pulling the minimum date for this recipe. Regards. On Mon, Sep 23, 2013 at 3:35 PM, Larry Martell larry.mart...@gmail.comwrote: I want to find the rows from a table that have the max date_time for each recipe. I know I've done this before with group by and having, but I can't seem to get it to work now. I get the correct row id, but not the correct date_time. I'm sure I'm missing something simple. For purposes of showing an example, I'll use one recipe, 19166. For that recipe here's the row I would want: mysql select id, MAX(date_time) from data_cstmeta where recipe_id = 19166; +-+-+ | id | MAX(date_time) | +-+-+ | 1151701 | 2013-02-07 18:38:13 | +-+-+ 1 row in set (0.01 sec) I would think this query would give me that - it gives me the correct id, but not the correct date_time: mysql SELECT id, date_time as MaxDateTime FROM data_cstmeta where recipe_id = 19166 group by recipe_id HAVING MIN(date_time); +-+-+ | id | MaxDateTime | +-+-+ | 1151701 | 2010-12-13 16:16:55 | +-+-+ 1 row in set (0.01 sec) How can I fix this? Thanks! -larry
Problem with having
I want to find the rows from a table that have the max date_time for each recipe. I know I've done this before with group by and having, but I can't seem to get it to work now. I get the correct row id, but not the correct date_time. I'm sure I'm missing something simple. For purposes of showing an example, I'll use one recipe, 19166. For that recipe here's the row I would want: mysql select id, MAX(date_time) from data_cstmeta where recipe_id = 19166; +-+-+ | id | MAX(date_time) | +-+-+ | 1151701 | 2013-02-07 18:38:13 | +-+-+ 1 row in set (0.01 sec) I would think this query would give me that - it gives me the correct id, but not the correct date_time: mysql SELECT id, date_time as MaxDateTime FROM data_cstmeta where recipe_id = 19166 group by recipe_id HAVING MIN(date_time); +-+-+ | id | MaxDateTime | +-+-+ | 1151701 | 2010-12-13 16:16:55 | +-+-+ 1 row in set (0.01 sec) How can I fix this? Thanks! -larry
Re: Problem with having
On Mon, Sep 23, 2013 at 1:51 PM, Sukhjinder K. Narula narula...@gmail.comwrote: Hi, In your second query, you seem to have MIN(date_time), but you are talking about maximum. So your group by query is actually pulling the minimum date for this recipe. I pasted the wrong query in. I get the same results regardless of if I have MIN or MAX - I get the id of the max, but the date_time of the min. On Mon, Sep 23, 2013 at 3:35 PM, Larry Martell larry.mart...@gmail.comwrote: I want to find the rows from a table that have the max date_time for each recipe. I know I've done this before with group by and having, but I can't seem to get it to work now. I get the correct row id, but not the correct date_time. I'm sure I'm missing something simple. For purposes of showing an example, I'll use one recipe, 19166. For that recipe here's the row I would want: mysql select id, MAX(date_time) from data_cstmeta where recipe_id = 19166; +-+-+ | id | MAX(date_time) | +-+-+ | 1151701 | 2013-02-07 18:38:13 | +-+-+ 1 row in set (0.01 sec) I would think this query would give me that - it gives me the correct id, but not the correct date_time: mysql SELECT id, date_time as MaxDateTime FROM data_cstmeta where recipe_id = 19166 group by recipe_id HAVING MIN(date_time); +-+-+ | id | MaxDateTime | +-+-+ | 1151701 | 2010-12-13 16:16:55 | +-+-+ 1 row in set (0.01 sec) How can I fix this? Thanks! -larry
Re: Problem with having
Hi Larry, On 9/23/2013 3:58 PM, Larry Martell wrote: On Mon, Sep 23, 2013 at 1:51 PM, Sukhjinder K. Narula narula...@gmail.comwrote: Hi, In your second query, you seem to have MIN(date_time), but you are talking about maximum. So your group by query is actually pulling the minimum date for this recipe. I pasted the wrong query in. I get the same results regardless of if I have MIN or MAX - I get the id of the max, but the date_time of the min. On Mon, Sep 23, 2013 at 3:35 PM, Larry Martell larry.mart...@gmail.comwrote: I want to find the rows from a table that have the max date_time for each recipe. I know I've done this before with group by and having, but I can't seem to get it to work now. I get the correct row id, but not the correct date_time. I'm sure I'm missing something simple. For purposes of showing an example, I'll use one recipe, 19166. For that recipe here's the row I would want: mysql select id, MAX(date_time) from data_cstmeta where recipe_id = 19166; +-+-+ | id | MAX(date_time) | +-+-+ | 1151701 | 2013-02-07 18:38:13 | +-+-+ 1 row in set (0.01 sec) I would think this query would give me that - it gives me the correct id, but not the correct date_time: mysql SELECT id, date_time as MaxDateTime FROM data_cstmeta where recipe_id = 19166 group by recipe_id HAVING MIN(date_time); +-+-+ | id | MaxDateTime | +-+-+ | 1151701 | 2010-12-13 16:16:55 | +-+-+ 1 row in set (0.01 sec) How can I fix this? Thanks! -larry You have to do a two-stage match. One stage to find the MAX() of a value for each recipe_id, the other to match that MAX() to one or more rows to give you the best ID values. Here's a subquery method of doing it. There are many many others (google for groupwize maximum) SELECT a.id, b.MaxDateTime FROM data_cstmeta a INNER JOIN ( SELECT MAX(date_time) MaxDateTime FROM data_cstmeta WHERE recipe_id = 19166 ) b on b.MaxDateTime = a.date_time WHERE recipe_id = 19166; Yours, -- Shawn Green MySQL Principal Technical Support Engineer Oracle USA, Inc. - Hardware and Software, Engineered to Work Together. Office: Blountville, TN -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: Problem with having
select recipe_id,max(maxdatetime) from data_csmeta group by recipe_id having recipe_id=19166; On Mon, Sep 23, 2013 at 4:15 PM, shawn green shawn.l.gr...@oracle.comwrote: Hi Larry, On 9/23/2013 3:58 PM, Larry Martell wrote: On Mon, Sep 23, 2013 at 1:51 PM, Sukhjinder K. Narula narula...@gmail.comwrote: Hi, In your second query, you seem to have MIN(date_time), but you are talking about maximum. So your group by query is actually pulling the minimum date for this recipe. I pasted the wrong query in. I get the same results regardless of if I have MIN or MAX - I get the id of the max, but the date_time of the min. On Mon, Sep 23, 2013 at 3:35 PM, Larry Martell larry.mart...@gmail.com **wrote: I want to find the rows from a table that have the max date_time for each recipe. I know I've done this before with group by and having, but I can't seem to get it to work now. I get the correct row id, but not the correct date_time. I'm sure I'm missing something simple. For purposes of showing an example, I'll use one recipe, 19166. For that recipe here's the row I would want: mysql select id, MAX(date_time) from data_cstmeta where recipe_id = 19166; +-+---**--+ | id | MAX(date_time) | +-+---**--+ | 1151701 | 2013-02-07 18:38:13 | +-+---**--+ 1 row in set (0.01 sec) I would think this query would give me that - it gives me the correct id, but not the correct date_time: mysql SELECT id, date_time as MaxDateTime FROM data_cstmeta where recipe_id = 19166 group by recipe_id HAVING MIN(date_time); +-+---**--+ | id | MaxDateTime | +-+---**--+ | 1151701 | 2010-12-13 16:16:55 | +-+---**--+ 1 row in set (0.01 sec) How can I fix this? Thanks! -larry You have to do a two-stage match. One stage to find the MAX() of a value for each recipe_id, the other to match that MAX() to one or more rows to give you the best ID values. Here's a subquery method of doing it. There are many many others (google for groupwize maximum) SELECT a.id, b.MaxDateTime FROM data_cstmeta a INNER JOIN ( SELECT MAX(date_time) MaxDateTime FROM data_cstmeta WHERE recipe_id = 19166 ) b on b.MaxDateTime = a.date_time WHERE recipe_id = 19166; Yours, -- Shawn Green MySQL Principal Technical Support Engineer Oracle USA, Inc. - Hardware and Software, Engineered to Work Together. Office: Blountville, TN -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
pt-table-checksum: --ignore-tables-regex does not work properly?
Hi All. I use: percona-toolkit-2.2.4-1.noarch Percona-Server-server-55-5.5.28-rel29.1.335.rhel6.x86_64 Percona-Server-shared-compat-5.5.28-rel29.1.335.rhel6.x86_64 Percona-Server-client-55-5.5.28-rel29.1.335.rhel6.x86_64 Percona-Server-shared-55-5.5.28-rel29.1.335.rhel6.x86_64 on Centos 6.3 2.6.32-279.14.1.el6.x86_64 I have created checksum table and tried to use --ignore-tables-regex to remove some tables from checking. pt-table-checksum --chunk-size-limit= --nocheck-plan --replicate-check --ignore-tables-regex=^test.s_.*_tmp$ --ignore-tables=test.catalogsearch_fulltext,test.catalogsearch_result,test.report_event,test.report_viewed_product_index,test.z_crawler_log,test.z_logger_debug_ajax,test.z_crawler_queue,test.catalog_category_anc_categs_index_tmp,test.catalog_category_anc_products_index_tmp,test.catalog_category_product_index_enbl_tmp,test.catalog_category_product_index_tmp,test.catalog_product_index_eav_decimal_tmp,test.catalog_product_index_eav_tmp,test.catalog_product_index_price_bundle_opt_tmp,test.catalog_product_index_price_bundle_sel_tmp,test.catalog_product_index_price_bundle_tmp,test.catalog_product_index_price_cfg_opt_agr_tmp,test.catalog_product_index_price_cfg_opt_tmp,test.catalog_product_index_price_downlod_tmp,test.catalog_product_index_price_final_tmp,test.catalog_product_index_price_opt_agr_tmp,test.catalog_product_index_price_opt_tmp,test.catalog_product_index_price_tmp,test.cataloginventory_stock_status_tmp,test.z_I04_data_for_crawler,test.z_import_prices_mdk,test.z_import_prices_sku,test.z_import_translations,test.z_import_translations_model --recursion-method dsn=h=localhost,D=percona,t=dsns --user=percona --password=percona --nocheck-replication-filters --databases=test,mysql localhost But it does not work, for example table test.s_xxx_tmp gives error message: 09-18T03:10:47 Skipping table test.s_xxx_tmp because it has problems on these replicas: Table test.s_xxx_tmp does not exist on replica server.local This can break replication. If you understand the risks, specify --no-check-slave-tables to disable this check. 09-18T03:10:47 Error checksumming table test.s_xxx_tmp: DBD::mysql::db selectrow_hashref failed: Tab le 'test.s_xxx_tmp' doesn't exist [for Statement EXPLAIN SELECT * FROM `test`.`s_xxx_tmp` WHERE 1=1] at /usr/bin/pt-table-checksum line 6528. I've tried --ignore-tables-regex= multiple times: ^test.s_.*_tmp$ '^test.s_.*_tmp$' ^test.s_.\*_tmp$ ^test.s_\.\*_tmp$ but without good result. What is the correct syntax in this case? Best regards, Rafal Radecki.
Re: Problem with having
On Mon, Sep 23, 2013 at 3:15 PM, shawn green shawn.l.gr...@oracle.comwrote: Hi Larry, On 9/23/2013 3:58 PM, Larry Martell wrote: On Mon, Sep 23, 2013 at 1:51 PM, Sukhjinder K. Narula narula...@gmail.comwrote: Hi, In your second query, you seem to have MIN(date_time), but you are talking about maximum. So your group by query is actually pulling the minimum date for this recipe. I pasted the wrong query in. I get the same results regardless of if I have MIN or MAX - I get the id of the max, but the date_time of the min. On Mon, Sep 23, 2013 at 3:35 PM, Larry Martell larry.mart...@gmail.com **wrote: I want to find the rows from a table that have the max date_time for each recipe. I know I've done this before with group by and having, but I can't seem to get it to work now. I get the correct row id, but not the correct date_time. I'm sure I'm missing something simple. For purposes of showing an example, I'll use one recipe, 19166. For that recipe here's the row I would want: mysql select id, MAX(date_time) from data_cstmeta where recipe_id = 19166; +-+---**--+ | id | MAX(date_time) | +-+---**--+ | 1151701 | 2013-02-07 18:38:13 | +-+---**--+ 1 row in set (0.01 sec) I would think this query would give me that - it gives me the correct id, but not the correct date_time: mysql SELECT id, date_time as MaxDateTime FROM data_cstmeta where recipe_id = 19166 group by recipe_id HAVING MIN(date_time); +-+---**--+ | id | MaxDateTime | +-+---**--+ | 1151701 | 2010-12-13 16:16:55 | +-+---**--+ 1 row in set (0.01 sec) How can I fix this? Thanks! -larry You have to do a two-stage match. One stage to find the MAX() of a value for each recipe_id, the other to match that MAX() to one or more rows to give you the best ID values. Here's a subquery method of doing it. There are many many others (google for groupwize maximum) SELECT a.id, b.MaxDateTime FROM data_cstmeta a INNER JOIN ( SELECT MAX(date_time) MaxDateTime FROM data_cstmeta WHERE recipe_id = 19166 ) b on b.MaxDateTime = a.date_time WHERE recipe_id = 19166; Having the recipe_id in the query was just to show an example. I really want the id's with the max date for each recipe_id: This is what I changed it to, which works, but is too slow. I need to find a more efficient solution: SELECT d1.id, d1.date_time as MaxDateTime FROM data_cstmeta d1 LEFT JOIN data_cstmeta d2 ON d1.recipe_id = d2.recipe_id AND d1.date_time d2.date_time WHERE d2.recipe_id IS NULL
Re: Problem with having
On Mon, Sep 23, 2013 at 2:17 PM, Sukhjinder K. Narula narula...@gmail.comwrote: Hi, I see that. So the query seems to be picking the first entry out of the after grouping by a field and displaying it. And it seems to make sense since Having clause seems incomplete. I believe we need to complete the condition by HAVING MIN(date_time) , or = something. After reading this, I see what the problem is: http://dev.mysql.com/doc/refman/5.0/en/group-by-extensions.html Then I read this: http://dev.mysql.com/doc/refman/5.0/en/example-maximum-column-group-row.html and changed it to this: SELECT d1.id, d1.date_time as MaxDateTime FROM data_cstmeta d1 LEFT JOIN data_cstmeta d2 ON d1.recipe_id = d2.recipe_id AND d1.date_time d2.date_time WHERE d2.recipe_id IS NULL Which works, but is painfully slow. For a table with 200k rows it's been running for 25 minutes and isn't done yet. That will be unacceptable to my users. On Mon, Sep 23, 2013 at 3:58 PM, Larry Martell larry.mart...@gmail.comwrote: On Mon, Sep 23, 2013 at 1:51 PM, Sukhjinder K. Narula narula...@gmail.com wrote: Hi, In your second query, you seem to have MIN(date_time), but you are talking about maximum. So your group by query is actually pulling the minimum date for this recipe. I pasted the wrong query in. I get the same results regardless of if I have MIN or MAX - I get the id of the max, but the date_time of the min. On Mon, Sep 23, 2013 at 3:35 PM, Larry Martell larry.mart...@gmail.comwrote: I want to find the rows from a table that have the max date_time for each recipe. I know I've done this before with group by and having, but I can't seem to get it to work now. I get the correct row id, but not the correct date_time. I'm sure I'm missing something simple. For purposes of showing an example, I'll use one recipe, 19166. For that recipe here's the row I would want: mysql select id, MAX(date_time) from data_cstmeta where recipe_id = 19166; +-+-+ | id | MAX(date_time) | +-+-+ | 1151701 | 2013-02-07 18:38:13 | +-+-+ 1 row in set (0.01 sec) I would think this query would give me that - it gives me the correct id, but not the correct date_time: mysql SELECT id, date_time as MaxDateTime FROM data_cstmeta where recipe_id = 19166 group by recipe_id HAVING MIN(date_time); +-+-+ | id | MaxDateTime | +-+-+ | 1151701 | 2010-12-13 16:16:55 | +-+-+ 1 row in set (0.01 sec) How can I fix this? Thanks! -larry
grouping and limiting results and rand()
Hello, How would i go about selecting 5 random cars that are flagged as internet_special (value 1) for each dealer from a specific table? Ive tried sub selects with no luck. Here's a basic query that has my required conditional. Note that I get all unique dealers by doing a distinct(dealer_web_name). Make sense? Using mysql 5. select dealer_web_name,id,internet_special,active from inventory where internet_special=1 and active=1; Appreciate the help Jj -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: grouping and limiting results and rand()
On 2013-09-23 8:10 PM, Jeremiah Jester wrote: Hello, How would i go about selecting 5 random cars that are flagged as internet_special (value 1) for each dealer from a specific table? Ive tried sub selects with no luck. Here's a basic query that has my required conditional. Note that I get all unique dealers by doing a distinct(dealer_web_name). Make sense? Using mysql 5. select dealer_web_name,id,internet_special,active from inventory where internet_special=1 and active=1; Appreciate the help For ideas see Within-group quotas at http://www.artfulsoftware.com/infotree/queries.php. PB - -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
