sql

问题 Wordpress: I need to bulk change user roles in the database using the "user id". Something like: "Find users with id: 2827, 772, 234, 983, 14999 and set their rol to "custumer" I know that the roles are saved in the table "wp_usermeta" in the fields "meta_key=wp_capabilities" and "meta_value=a:1:{s:6:"editor";b:1;}". But I don't know how to create the slq query to search and replace them to change their values.See capture attached. 回答1: Easiest for me is to use phpmyadmin and edit one record.

问题 Wordpress: I need to bulk change user roles in the database using the "user id". Something like: "Find users with id: 2827, 772, 234, 983, 14999 and set their rol to "custumer" I know that the roles are saved in the table "wp_usermeta" in the fields "meta_key=wp_capabilities" and "meta_value=a:1:{s:6:"editor";b:1;}". But I don't know how to create the slq query to search and replace them to change their values.See capture attached. 回答1: Easiest for me is to use phpmyadmin and edit one record.

问题 Wordpress: I need to bulk change user roles in the database using the "user id". Something like: "Find users with id: 2827, 772, 234, 983, 14999 and set their rol to "custumer" I know that the roles are saved in the table "wp_usermeta" in the fields "meta_key=wp_capabilities" and "meta_value=a:1:{s:6:"editor";b:1;}". But I don't know how to create the slq query to search and replace them to change their values.See capture attached. 回答1: Easiest for me is to use phpmyadmin and edit one record.

问题 I have a table - emp_record which has 40,000 records And I want to fetch the records from java code and below is the requirement - At a time only 1000 records should be returned In the next hit next 1000 records continue till all the records exhaust The SQL query should not be nested, like select * from( SELECT a.*,rownum rn FROM distributor a) WHERE rn >= 3000 and rn < 4000; Any sort of help is much appreciated. 回答1: This sounds very artifical as 40.000 records is nothing. I would just read

问题 I have a table - emp_record which has 40,000 records And I want to fetch the records from java code and below is the requirement - At a time only 1000 records should be returned In the next hit next 1000 records continue till all the records exhaust The SQL query should not be nested, like select * from( SELECT a.*,rownum rn FROM distributor a) WHERE rn >= 3000 and rn < 4000; Any sort of help is much appreciated. 回答1: This sounds very artifical as 40.000 records is nothing. I would just read

问题 I want to get all the records in a table until the sum of a particular column is less than or equal to 'n'. For example: Table: data slno item price 1 item1 1000 2 item2 2000 3 item3 3000 4 item4 4000 5 item5 5000 6 item6 6000 I want to get all records from above table until the sum(price) is less than or equal to 10000 So, with the above table my result would be first 4 records. 回答1: You can do SELECT slno, item, price FROM ( SELECT slno, item, price, @t := @t + price total FROM table1 CROSS

问题 I have 2 python programs running. Script1 writes entries to a table periodically, and Script2 reads from the same MySQL table. Both are running simultaneously. Script2 must get the last (latest added) entry of the table. Now, the problem is that Script1 is adding entries to the table perfectly, but Script2 is unable to read the latest entry each time. It reads the latest entry only when I close the connection after reading, and re-open it when I want to read again. Is this the only approach

问题 I need to insert a timestamp with milliseconds in an Oracle table with Python 3.6 and cx_Oracle 6.4.1. The insert is done okay but I am losing the milliseconds on the way. The timestamp is passed as a datetime object. Any ideas how I could keep the milliseconds without making a to_timestamp() in the SQL itself? I would like to keep passing a datetime in the SQL transaction. I use executemany() as the idea is to insert multiple records at once. import cx_Oracle import datetime conf = {

问题 I got a Vehicle table with lots of info but one of the columns being 'Owner' in a MSSQL table But one of the owners i can't select when i use LIKE but can if i use = 'Silkeborg Distributionscenter' is the owner (Yes there is a double space in both the table and the param) So the param is: DECLARE @Owners nvarchar(MAX) = 'Silkeborg Distributionscenter' I tried: SELECT * FROM Vehicle WHERE @Owners = Owner --This gave me all the correct results Then: SELECT * FROM Vehicle WHERE @Owners LIKE

问题 I got a Vehicle table with lots of info but one of the columns being 'Owner' in a MSSQL table But one of the owners i can't select when i use LIKE but can if i use = 'Silkeborg Distributionscenter' is the owner (Yes there is a double space in both the table and the param) So the param is: DECLARE @Owners nvarchar(MAX) = 'Silkeborg Distributionscenter' I tried: SELECT * FROM Vehicle WHERE @Owners = Owner --This gave me all the correct results Then: SELECT * FROM Vehicle WHERE @Owners LIKE