大约有 47,000 项符合查询结果(耗时:0.0295秒) [XML]

https://stackoverflow.com/ques... 

List all tables in postgresql information_schema

... You should be able to just run select * from information_schema.tables to get a listing of every table being managed by Postgres for a particular database. You can also add a where table_schema = 'information_schema' to see just the tables in the informat...
https://stackoverflow.com/ques... 

Rails ActiveRecord date between

...ne day. The field is part of the standard timestamps, is created_at . The selected date is coming from a date_select . 11...
https://stackoverflow.com/ques... 

IN clause and placeholders

...mes = { "name1", "name2" }; // do whatever is needed first String query = "SELECT * FROM table" + " WHERE name IN (" + makePlaceholders(names.length) + ")"; Cursor cursor = mDb.rawQuery(query, names); Just make sure to pass exactly as many values as places. The default maximum limit of host pa...
https://stackoverflow.com/ques... 

How to select all instances of a variable and edit variable name in Sublime

If I select a variable (not just any string) in my code, all other instances of that variable get a stroke (white outline) around them: ...
https://stackoverflow.com/ques... 

Best way to test SQL queries [closed]

...value, and all values are consecutive: create view cm_absolute_month as select *, year * 12 + month as absolute_month from month_value; Now what we have to test is inherent in our spec, namely that for any tuple (year, month), there is one and only one (absolute_month), and that (absolute_month...
https://stackoverflow.com/ques... 

Search text in stored procedure in SQL Server

...t the schema name by adding SCHEMA_NAME(o.schema_id) AS Schema_Name to the select clause. – patricus Jul 7 '16 at 15:07 6 ...
https://stackoverflow.com/ques... 

How to get the connection String from a database

... Visual Studio go to Tools -> Connect to Database. 2] Under Server Name Select your Database Server Name (Let the list Populate if its taking time). 3] Under Connect to a Database, Select Select or enter a database name. 4] Select your Database from Dropdown. 5] After selecting Database try Test ...
https://stackoverflow.com/ques... 

How do I reset a sequence in Oracle?

...q_name in varchar2 ) is l_val number; begin execute immediate 'select ' || p_seq_name || '.nextval from dual' INTO l_val; execute immediate 'alter sequence ' || p_seq_name || ' increment by -' || l_val || ' minvalue 0'; ...
https://stackoverflow.com/ques... 

Measure the time it takes to execute a t-sql query

... to just grab the current date and time. In SQL Server Management Studio SELECT GETDATE(); SELECT /* query one */ 1 ; SELECT GETDATE(); SELECT /* query two */ 2 ; SELECT GETDATE(); To calculate elapsed times, you could grab those date values into variables, and use the DATEDIFF function: DECL...
https://stackoverflow.com/ques... 

Database Design for Tagging

... to rebuilt every time a question has a tag added or removed. A query like select * from question q inner join question_has_tag qt where tag_id in (select tag_id from tags where (what we want) minus select tag_id from tags where (what we don't) should be fine and scale out assuming the right b-tree ...