identifier
Invalid identifier error on field created with select statement
Why sql bellow don\'t work? select a.field1, a.field2, a.field3, (select count(*) from table2 b where b.field1 = a.field1[详细]
2023-04-12 20:59 分类：问答How do I get the identifier from the user object?
How do you retrieve the identifier from the user object? Normally, I would expect the identifier to be something like this:[详细]
2023-04-11 06:29 分类：问答How do I generate unique usernames on a shared database concurrently?
I need to generate account names automatically. They will be used in user software that will access my 开发者_如何学Pythonservice, so they are not necessarily pretty looking. I guess any alphanumeric[详细]
2023-04-08 22:59 分类：问答How can one check an identifier for unescaped validity in most RDBMSs?
I\'d like my application to work on several databases. While I\'m not going to explicitly support them right now, I\'d like to be able to define my schemata such that I\'m not using reserved identifie[详细]
2023-04-07 23:57 分类：问答How ["03C0"] match <Ada Reference Manual>'s grammar in Annex P?
I\'m writing a tool to parse Ada source file with the grammar provided in2005 Annex P. With following piece of code, I know [\"03C0\"] stands for \"greek letter Pi\", but is it a legal variable name[详细]
2023-04-07 23:50 分类：问答Oracle newbie error: ORA-00904 Invalid identifier when using "case when"
I\'m getting an error in a query. This query is OK and returning data (the selects and rownums are for pagination):[详细]
2023-04-06 06:09 分类：问答Getting unique ID of non-phone iDevices and Android tablets
My app uses a device\'s phone number to get meaningful information about the user\'s contacts. It runs on Android and iOS.[详细]
2023-04-01 10:15 分类：问答iPhone - Changing Bundle identifier : what will happen?
What may happen if I change my app bundle identifier ? For example, if I go from com.myapps.appname to com.myapps.utilities.appname, or com.myapps.appname.appnameFULL[详细]
2023-03-29 01:35 分类：问答Multiple reuse identifiers in a UITableView
I have a t开发者_Python百科able view where the cells have a variable height. This causes problems with having a reuse identifier but I would really like the cache for UITableViewCells that Apple gave[详细]
2023-03-26 01:02 分类：问答ANTLR - identifier with whitespace
i want identifiers that can contain whitespace. grammar WhitespaceInSymbols; premise :( options {greedy=false;} : \'IF\' )id=ID{[详细]
2023-03-23 13:41 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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