大约有 47,000 项符合查询结果(耗时:0.0316秒) [XML]

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How to find largest objects in a SQL Server database?

...quite a bit understanding and determining the size of indices and tables: SELECT t.name AS TableName, i.name as indexName, sum(p.rows) as RowCounts, sum(a.total_pages) as TotalPages, sum(a.used_pages) as UsedPages, sum(a.data_pages) as DataPages, (sum(a.total_pages) *...
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Adding a library/JAR to an Eclipse Android project

...w application project. When you are creating the library project, you can select any application name, package, and set other fields as needed, as shown in figure 1. Next, set the project's properties to indicate that it is a library project: In the Package Explorer, right-click the library proje...
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byte[] to hex string [duplicate]

...); } static string LinqConcat(byte[] data) { return string.Concat(data.Select(b => b.ToString("X2")).ToArray()); } static string LinqJoin(byte[] data) { return string.Join("", data.Select( bin => bin.ToString("X2") ).ToArray()); } static string LinqAgg(b...
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Python loop counter in a for loop [duplicate]

... Use enumerate() like so: def draw_menu(options, selected_index): for counter, option in enumerate(options): if counter == selected_index: print " [*] %s" % option else: print " [ ] %s" % option options = ['Option 0', 'Option...
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T-SQL query to show table definition?

...n get most of the details from Information Schema Views and System Views. SELECT ORDINAL_POSITION, COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH , IS_NULLABLE FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'Customers' SELECT CONSTRAINT_NAME FROM INFORMATION_SCHEMA.CONSTRAINT_TABLE_US...
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Android file chooser [closed]

...ent in an Intent.createChooser() like this: private static final int FILE_SELECT_CODE = 0; private void showFileChooser() { Intent intent = new Intent(Intent.ACTION_GET_CONTENT); intent.setType("*/*"); intent.addCategory(Intent.CATEGORY_OPENABLE); try { startActivityForR...
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Viewing complete strings while debugging in Eclipse

...ck on Details pane (the section where the string content is displayed) and select "Max Length..." popup menu. The same length applies to expression inspector popup and few other places. share | im...
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Concatenate multiple result rows of one column into one, group by another column [duplicate]

...Simpler with the aggregate function string_agg() (Postgres 9.0 or later): SELECT movie, string_agg(actor, ', ') AS actor_list FROM tbl GROUP BY 1; The 1 in GROUP BY 1 is a positional reference and a shortcut for GROUP BY movie in this case. string_agg() expects data type text as input. Other ...
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How to display the function, procedure, triggers source code in postgresql?

... For function: you can query the pg_proc view , just as the following select proname,prosrc from pg_proc where proname= your_function_name; Another way is that just execute the commont \df and \ef which can list the functions. skytf=> \df ...
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SQL Server: Get data for only the past year

... The following adds -1 years to the current date: SELECT ... From ... WHERE date > DATEADD(year,-1,GETDATE()) share | improve this answer | follo...