大约有 40,000 项符合查询结果(耗时:0.0216秒) [XML]

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How to see full query from SHOW PROCESSLIST

... pull the data and look at 'INFO' column which contains the whole query : select * from INFORMATION_SCHEMA.PROCESSLIST where db = 'somedb'; You can add any condition or ignore based on your requirement. The output of the query is resulted as : +-------+------+-----------------+--------+--------...
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PHP/MySQL insert row then get 'id'

...); See mysqli_insert_id(). Whatever you do, don't insert and then do a "SELECT MAX(id) FROM mytable". Like you say, it's a race condition and there's no need. mysqli_insert_id() already has this functionality. share ...
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How do I calculate tables size in Oracle

...BLE_NAME FORMAT A32 COLUMN OBJECT_NAME FORMAT A32 COLUMN OWNER FORMAT A10 SELECT owner, table_name, TRUNC(sum(bytes)/1024/1024) Meg, ROUND( ratio_to_report( sum(bytes) ) over () * 100) Percent FROM (SELECT segment_name table_name, owner, bytes FROM dba_segments WHERE segment_type IN...
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how to log in to mysql and query the database from linux terminal

I am using debian linux. I have a linux machine on which mysql is install. I can log in to my linux machine using root user as well as other user. I can connect to mysql database on linux machine from windows machine using sqlyog. Now I want to execute queries on linux machine only using linux termi...
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Windows重置网络命令 - 环境配置 - 清泛IT论坛,有思想、有深度

启动cmd.exe命令提示窗口,输入以下命令: 命令:netsh winsock reset 回车,重启电脑,即可重置网络连接配置。   在一般的网络连接问题中,这个方法是最简单也是最能彻底解决问题的……
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sql query to return differences between two tables

...colum C, here are the records, which are present in table A but not in B: SELECT A.* FROM A LEFT JOIN B ON (A.C = B.C) WHERE B.C IS NULL To get all the differences with a single query, a full join must be used, like this: SELECT A.*, B.* FROM A FULL JOIN B ON (A.C = B.C) WHERE A.C IS NUL...
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How to get cumulative sum

the above select returns me the following. 16 Answers 16 ...
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Splitting string into multiple rows in Oracle

... be an improved way (also with regexp and connect by): with temp as ( select 108 Name, 'test' Project, 'Err1, Err2, Err3' Error from dual union all select 109, 'test2', 'Err1' from dual ) select distinct t.name, t.project, trim(regexp_substr(t.error, '[^,]+', 1, levels.column_value...
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How to export and import a .sql file from command line with options? [duplicate]

...mysql_location -u $u_name -p $db_name < $sql_file else echo "please select a valid command" fi share | improve this answer |
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Reshaping data.frame from wide to long format

... Here is another example showing the use of gather from tidyr. You can select the columns to gather either by removing them individually (as I do here), or by including the years you want explicitly. Note that, to handle the commas (and X's added if check.names = FALSE is not set), I am also us...