大约有 44,000 项符合查询结果(耗时:0.0417秒) [XML]

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INSERT IF NOT EXISTS ELSE UPDATE?

...ike: insert or replace into Book (ID, Name, TypeID, Level, Seen) values ((select ID from Book where Name = "SearchName"), "SearchName", ...); Note that any field not in the insert list will be set to NULL if the row already exists in the table. This is why there's a subselect for the ID column: I...
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How to execute raw SQL in Flask-SQLAlchemy app

...xecute("<sql here>") or: from sqlalchemy import text sql = text('select name from penguins') result = db.engine.execute(sql) names = [row[0] for row in result] print names share | improve...
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How to change column order in a table using sql query in sql server 2005?

... to look at the data in a table with a given column order when you make a "SELECT *". I'm a developer and do this kind of queries all the time. You can spare some time with a good pre-defined column order. From any other standpoint, of course, it has no sense: nothing should depend on the column ord...
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Transferring an app to another Firebase account

...another account. All you have to do is: Go to your Firebase console, and select the project you want to shift. Select the cog icon besides the project name on top right. Select Permissions from the flyout. Select Advanced permission settings hyperlink. You've reached the IAM & Admin page of Fi...
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How do I check if a SQL Server text column is empty?

... Actually, you just have to use the LIKE operator. SELECT * FROM mytable WHERE mytextfield LIKE '' share | improve this answer | follow ...
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How to use a class from one C# project with another C# project

...Explorer' tree, expand the P2 project and then right-click the project and select 'Add Reference' from the menu. On the 'Add Reference' dialog, select the 'Projects' tab and select your P1 project. If you are using namespaces then you will need to import the namespaces for your P1 types by adding ...
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Intellij IDEA: Hotkey for “scroll from source”

... In the latest IntelliJ IDEA, there is a keymap entry called "Select in Project View" with no default shortcut. Just add a shortcut key to it. No need for a plugin. share | improve thi...
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How to get a list of column names on Sqlite3 database?

... but you can't select from that table. It's just plain annoying. I'm trying something like this... but it don't work create temporary table TmpCols (cid integer, name text, type text, nn bit, dflt_value, pk bit); .mode insert TmpCols .out...
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Oracle: If Table Exists

... declare c int; begin select count(*) into c from user_tables where table_name = upper('table_name'); if c = 1 then execute immediate 'drop table table_name'; end if; end; That's for checking whether a table in the current schema exi...
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Visual Studio 2010 IntelliSense doesn't select a default value - it just marks it

... I had the same problem, but find pressing TAB always selects the default selection. share | improve this answer | follow | ...