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A dependent property in a ReferentialConstraint is mapped to a store-generated column
... had left the foreign key part of the relationship as the default given by SQL Server 2008 Management Studio, which was the primary key fields of the child table, not the column I had created to contain the foreign key value.
– robaker
Mar 5 '12 at 10:23
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How do I execute a stored procedure once for each row returned by query?
...
use a cursor
ADDENDUM: [MS SQL cursor example]
declare @field1 int
declare @field2 int
declare cur CURSOR LOCAL for
select field1, field2 from sometable where someotherfield is null
open cur
fetch next from cur into @field1, @field2
while @@FET...
程序员之网络安全系列（二）：如何安全保存用户密码及哈希算法 - 更多技术 ...
...段数据唯一且极其紧凑的数值表示形式. 典型的哈希算法包括 MD2、MD4、MD5 和 SHA-1
Hash算法是给消息生成摘要，那么什么是摘要呢？
举个例子： > 比如你给你女朋友写了一封邮件，确保没被人改过，你可以生成这样一份摘要 “...
Possible to do a MySQL foreign key to one of two possible tables?
...s not possible
);
There's no way to model Polymorphic Associations using SQL constraints. A foreign key constraint always references one target table.
Polymorphic Associations are supported by frameworks such as Rails and Hibernate. But they explicitly say that you must disable SQL constraints ...
Backup/Restore a dockerized PostgreSQL database
I'm trying to backup/restore a PostgreSQL database as is explained on the Docker website, but the data is not restored.
10 ...
Add primary key to existing table
...imary key,otherwise will cause error. Because there is one primary key for sql table.
First, you have to drop your old primary key.
MySQL:
ALTER TABLE Persion
DROP PRIMARY KEY;
SQL Server / Oracle / MS Access:
ALTER TABLE Persion
DROP CONSTRAINT 'constraint name';
You have to find the con...
Ant task to run an Ant target only if a file exists?
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Check Using Filename filters like DB_*/**/*.sql
Here is a variation to perform an action if one or more files exist corresponding to a wildcard filter. That is, you don't know the exact name of the file.
Here, we are looking for "*.sql" files in any sub-directories ...
What is the string concatenation operator in Oracle?
What is the string concatenation operator in Oracle SQL?
5 Answers
5
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How do you count the number of occurrences of a certain substring in a SQL varchar?
...e a,b,c,d. Is there a way to count the number of commas in that value in T-SQL?
20 Answers
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SQL join on multiple columns in same tables
...new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f16597660%2fsql-join-on-multiple-columns-in-same-tables%23new-answer', 'question_page');
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