大约有 47,000 项符合查询结果(耗时:0.0197秒) [XML]

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Truncating all tables in a Postgres database

...e IN VARCHAR) RETURNS void AS $$ DECLARE statements CURSOR FOR SELECT tablename FROM pg_tables WHERE tableowner = username AND schemaname = 'public'; BEGIN FOR stmt IN statements LOOP EXECUTE 'TRUNCATE TABLE ' || quote_ident(stmt.tablename) || ' CASCADE;'; END LOO...
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fatal error: malformed or corrupted AST file - Xcode

...olved the issue for me. In Xcode, go to Window->Organizer->Projects, select your project, and press the "Delete..." button next to "Derived data". If this doesn't work, you can try to do a Product->Clean (Cmd+Shift+k). ...
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MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)

...=/tmp/mysql-5.5.sock Welcome to the MySQL monitor (...) mysql> SELECT user, host FROM mysql.user; +------+-----------+ | user | host | +------+-----------+ | bill | % | | root | 127.0.0.1 | | root | ::1 | | root | localhost | +------+---...
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Imply bit with constant 1 or 0 in SQL Server

Is it possible to express 1 or 0 as a bit when used as a field value in a select statement? 8 Answers ...
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Remove Identity from a column in a table

...USTERED INDEX IX_Original_Value ON Original (Value); INSERT INTO Original SELECT 'abcd' UNION ALL SELECT 'defg'; You can do the following: --create new table with no IDENTITY CREATE TABLE Original2 ( Id INT PRIMARY KEY , Value NVARCHAR(300) ); CREATE NONCLUSTERED INDEX IX_Original_Value2 ON O...
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How do I escape a reserved word in Oracle?

In TSQL I could use something like Select [table] from tablename to select a column named "table". 5 Answers ...
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How do you use script variables in psql?

...t myvariable value ... and can then be substituted, for example, as ... SELECT * FROM :myvariable.table1; ... or ... SELECT * FROM table1 WHERE :myvariable IS NULL; edit: As of psql 9.1, variables can be expanded in quotes as in: \set myvariable value SELECT * FROM table1 WHERE column1 ...
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How can I return two values from a function in Python?

...s, but you can return a tuple or a list and unpack it after the call: def select_choice(): ... return i, card # or [i, card] my_i, my_card = select_choice() On line return i, card i, card means creating a tuple. You can also use parenthesis like return (i, card), but tuples are created ...
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IntelliJ and Tomcat…changed files are not automatically recognized by Tomcat

...ebug configuration (Run > Edit Configurations) Click the add icon, select 'artifact' and then select pizza_mvc:war exploded: Modify 'On update action' and 'On frame diactivation': Everytime you want to refresh your resources, press <Ctrl> + F10 ...
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Professional jQuery based Combobox control? [closed]

... If I already select one value, then click arrow it only show the selected value, not all value. – linbo Oct 10 '12 at 11:55 ...