大约有 47,000 项符合查询结果(耗时:0.0348秒) [XML]

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What GRANT USAGE ON SCHEMA exactly do?

...a schema doesn't grant rights on the tables within. If you have rights to SELECT from a table, but not the right to see it in the schema that contains it then you can't access the table. The rights tests are done in order: Do you have `USAGE` on the schema? No: Reject access. Yes: Do...
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Maven2: Best practice for Enterprise Project (EAR file)

... What helped me a lot was to run the Maven archetype:generate goal and select from one of the archetypes, some of which seem to be updated regularly (in particular JBoss seems to be well maintained). mvn archetype:generate Hundreds of archetypes appeared in a numbered list from which to selec...
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Python in Xcode 4+?

... In the menu bar, click “File” → “New” → “New Project…”. Select “Other” in the left pane, then "External Build System" in the right page, and next click "Next". Enter the product name, organization name, or organization identifier. For the “Build Tool” field, type in /usr/l...
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Possible to perform cross-database queries with PostgreSQL?

... executes a query in a remote database dblink executes a query (usually a SELECT, but it can be any SQL statement that returns rows) in a remote database. When two text arguments are given, the first one is first looked up as a persistent connection's name; if found, the command is executed on that...
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SQL: How to perform string does not equal

... Try the following query select * from table where NOT (tester = 'username') share | improve this answer | follow ...
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'git' is not recognized as an internal or external command

... In the Start Menu or taskbar search, search for "environment variable". Select "Edit the system environment variables". Click the "Environment Variables" button at the bottom. Double-click the "Path" entry under "System variables". With the "New" button in the PATH editor, add C:\Program Files\Gi...
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How do I copy to the clipboard in JavaScript?

... document.body.appendChild(textArea); textArea.focus(); textArea.select(); try { var successful = document.execCommand('copy'); var msg = successful ? 'successful' : 'unsuccessful'; console.log('Fallback: Copying text command was ' + msg); } catch (err) { consol...
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How can I change my default database in SQL Server without using MS SQL Server Management Studio?

...nagement Studio by using the 'options' button in the connection dialog and selecting 'master' as the database to connect to. However, whenever I try to do anything in object explorer, it tries to connect using my default database and fails. ...
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How do I delete a fixed number of rows with sorting in PostgreSQL?

... You could try using the ctid: DELETE FROM logtable WHERE ctid IN ( SELECT ctid FROM logtable ORDER BY timestamp LIMIT 10 ) The ctid is: The physical location of the row version within its table. Note that although the ctid can be used to locate the row version very quickly,...
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Get all table names of a particular database by SQL query?

...different sql dbms deal with schemas. Try the following For SQL Server: SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE' AND TABLE_CATALOG='dbName' For MySQL: SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE' AND TABLE_SCHEMA='dbN...