大约有 18,336 项符合查询结果（耗时：0.0188秒） [XML]
How do I query if a database schema exists
...Name sysname = 'myfunschema';
-- shortest
If EXISTS (SELECT 1 WHERE SCHEMA_ID(@schemaName) IS NOT NULL)
PRINT 'YEA'
ELSE
PRINT 'NOPE'
SELECT DB_NAME() AS dbname WHERE SCHEMA_ID(@schemaName) IS NOT NULL -- nothing returned if not there
IF NOT EXISTS ( SELECT top 1 *
FROM sys.sch...
conditional unique constraint
...icrosoft.com/en-us/library/ms188258.aspx
CREATE TABLE CheckConstraint
(
Id TINYINT,
Name VARCHAR(50),
RecordStatus TINYINT
)
GO
CREATE FUNCTION CheckActiveCount(
@Id INT
) RETURNS INT AS BEGIN
DECLARE @ret INT;
SELECT @ret = COUNT(*) FROM CheckConstraint WHERE Id = @Id AND RecordStatu...
Pandas DataFrame column to list [duplicate]
... Thanks that works! I want to delete the duplicates out of the ID list. I tried using set(ID) but gives an error saying TypeError: unhashable type: 'list'
– user3646105
May 20 '14 at 0:18
...
How to use putExtra() and getExtra() for string data
... edited Jun 21 '15 at 21:30
David Passmore
5,87144 gold badges4141 silver badges6868 bronze badges
answered Mar 10 '11 at 21:11
...
Create table using Javascript
...me('body')[0];
var tbl = document.createElement('table');
tbl.style.width = '100%';
tbl.setAttribute('border', '1');
var tbdy = document.createElement('tbody');
for (var i = 0; i < 3; i++) {
var tr = document.createElement('tr');
for (var j = 0; j < 2; j++) {
if...
Rails: Adding an index after adding column
...able < ActiveRecord::Migration
def change
add_index :table, :user_id
end
end
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WebAPI Delete not working - 405 Method Not Allowed
... add the following to your web.config
<system.webServer>
<validation validateIntegratedModeConfiguration="false"/>
<modules runAllManagedModulesForAllRequests="true">
<remove name="WebDAVModule"/> <!-- ADD THIS -->
</modules>
... rest of s...
Get host domain from URL?
... Host property
Uri url = new Uri(@"http://support.domain.com/default.aspx?id=12345");
Console.WriteLine(url.Host);
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Hibernate Criteria returns children multiple times with FetchType.EAGER
...statement:
SELECT o.*, l.* from ORDER o LEFT OUTER JOIN LINE_ITEMS l ON o.ID = l.ORDER_ID
Want to know why the duplicates are there? Look at the SQL resultset,
Hibernate does not hide these duplicates on the left side of the outer
joined result but returns all the duplicates of the drivin...
Is Redis just a cache?
...ect can be modeled as a Map. For example, a Question is a map with fields {id, title, date_asked, votes, asked_by, status}. Similarly, an Answer is a map with fields {id, question_id, answer_text, answered_by, votes, status}. Similarly, we can model a user object.
Each of these objects can be direc...