mysql5

DBunit; confusion over case sensitivity on table/column names

由 一世执手 提交于 2019-12-19 08:52:39
问题 I'm getting this error when I start up my application Caused by: org.dbunit.dataset.NoSuchColumnException: CLIENT.ID - (Non-uppercase input column: ID) in ColumnNameToIndexes cache map. Note that the map's column names are NOT case sensitive I'm not too sure why I'm getting this, since my table/column names all all referenced in upper case(even though the message insists this shouldn't be an issue) My table : mysql> describe CLIENT; +------------------+--------------+------+-----+---------+--

MySQL group by date and count including missing dates

由 喜你入骨 提交于 2019-12-18 05:07:20
问题 Previously I was doing following to get per day count from reports table. SELECT COUNT(*) AS count_all, tracked_on FROM `reports` WHERE (domain_id = 939 AND tracked_on >= '2014-01-01' AND tracked_on <= '2014-12-31') GROUP BY tracked_on ORDER BY tracked_on ASC; Obviously this wont give me 0 count for missing dates. Then I finally found a optimum solution to generate date-series between given date range. But the next challenge am facing is to join it with my reports table and get the count

MySQL database with unique fields ignored ending spaces

由 流过昼夜 提交于 2019-12-17 09:55:51
问题 My projects requires to start inputs from the user with the spacing on the left and spacing on the right of a word, for example 'apple'. If the user types in ' apple' or 'apple ', whether it is one space or multiple space on the left or right of the word, I need to store it that way. This field has the Unique attribute, but I attempt to insert the word with spacing on the left, and it works fine. But when I attempt to insert the word with spacing on the right it trims off all the spacing from

Can't connect to MySQL server on 'localhost' (10061)

由 独自空忆成欢 提交于 2019-12-17 03:31:14
问题 I recently installed MySQL 5 on Windows 2003 and tried configuring an instance. Everything worked fine until I got to "Applying Security settings", at which point it gave me the above error ( Can't connect to MySQL server on 'localhost' (10061) ). I do have a port 3306 exception in my firewall for 'MySQL Server'. 回答1: You'll probably have to grant 'localhost' privileges to on the table to the user. See the 'GRANT' syntax documentation. Here's an example (from some C source). "GRANT ALL

How to Sum multiple Column with multiple value

由 断了今生、忘了曾经 提交于 2019-12-12 21:13:15
问题 I am looking for a solution to the following: Go in to the users table and find a user who has listed items on the site. In this users table, there is no column about auctions. Instead, it is connected to an accounts table with a key (in accounts, this column is called user) From these IDs (users which have listed items for auction), I need to find their account balance. This is also in the accounts table. The balance is contained in a column called operation_amount. I also have another

What is wrong with my MySQL CASE/WHEN syntax?

由 折月煮酒 提交于 2019-12-12 17:16:38
问题 I'm trying to learn the ropes of some new MySQL syntax and am having trouble. This should be simple... I'm following along with the manual here: http://dev.mysql.com/doc/refman/5.5/en/case.html but I keep getting a syntax error. Here is my routine: # Drop anonymous accounts, if any USE mysql; CASE (SELECT COUNT(*) FROM user WHERE User = '' AND Host = 'localhost') WHEN 1 THEN DROP USER ''@'localhost'; FLUSH PRIVILEGES; END CASE; The error is: ERROR 1064 (42000): You have an error in your SQL

return all the columns in a MySQL table in a string format

由 自闭症网瘾萝莉.ら 提交于 2019-12-10 17:06:15
问题 Is there a way to return all the columns in a MySQL table in a string format? I would like to have something like this returned: course_id, name, par, yds, mtrs etc. I am aware of how to show the fields/columns in a table ( SHOW FIELDS FROM course; ) however these are returned in a tabular format. 回答1: select group_concat(column_name separator ', ') from information_schema.columns where table_name = 'course' group by table_name 回答2: If your DB-user has access to the information schema, you

Can we run a mysql query through command prompt in windows?

由 夙愿已清 提交于 2019-12-10 03:32:07
问题 Can we run MySQL query from windows command prompt? If so, how can we do that and process the query result through command prompt? 回答1: Try to use mysql — the MySQL command-line tool with '--execute=statement' or '-e statement' option. 回答2: You can install the MySQL client for windows and then use that for sending commands to a server. http://dev.mysql.com/doc/refman/5.0/en/mysql.html You can use the following type of format for commands mysql db_name < script.sql > output.tab or shell> mysql

What rules apply to naming a mysql column?

由 与世无争的帅哥 提交于 2019-12-07 05:49:09
问题 In a MySQL table, naming a column, can I use spaces uppercase letters UTF8 characters What other rules shall I follow? ( MySQL5 ) 回答1: Yes, Yes, and Yes. I like underscores between field names and no uppercase, but I don't want to start a flame war. Another good reason to not use special characters in column names is you, or others are eventually going to have to type that over and over in your application. I'd stick to the standard english alphabet. Good column names: account_id user_id

Mysql Query perfomance. Which one is best?

由 流过昼夜 提交于 2019-12-06 15:33:42
Hi I want to know which kind of queries are good with multiple tables. For eg: select table1.id, table1.name from table1,table2,table3 where table1.id=table2.id and table2.id=table3.id or select table1.id, table1.name from table1 inner join table2 on table1.id=table2.id inner join table3 on table2.id=table3.id where 1 or select table1.id, table1.name from table1 join table2 on table1.id=table2.id join table3 on table2.id=table3.id where 1 Which kind of query is best for performance? They should be exactly the same. Probably you might want to read the corresponding section from the MySQL manual
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