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What is the string concatenation operator in Oracle?
What is the string concatenation operator in Oracle SQL?
5 Answers
5
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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 ...
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
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How to turn off the Eclipse code formatter for certain sections of Java code?
I've got some Java code with SQL statements written as Java strings (please no OR/M flamewars, the embedded SQL is what it is - not my decision).
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How to copy data from one table to another new table in MySQL?
I want to copy data from one table to another in MySQL.
11 Answers
11
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EF Code First foreign key without navigation property
...ning this migration (update-database on package manage console) will run a SQL statement similar to this (for SQL Server):
ALTER TABLE [ChildTableName] ADD CONSTRAINT [FK_SomeName]
FOREIGN KEY ([ParentId]) REFERENCES [ParentTableName] ([Id])
CREATE INDEX [IX_SomeName] ON [ChildTableName] ([ParentI...
What are DDL and DML?
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More information see here: MySQL What is DDL, DML and DCL?, the original is as follows:
DDL
DDL is short name of Data Definition Language, which deals with
database schemas and descriptions, of how the data should reside in
the database.
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Query to list all stored procedures
What query can return the names of all the stored procedures in a SQL Server database
23 Answers
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linux下iptables配置详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...337 -j DROP
有些些特洛伊木马会扫描端口31337到31340(即黑客语言中的 elite 端口)上的服务。既然合法服务都不使用这些非标准端口来通信,阻塞这些端口能够有效地减少你的网络上可能被感染的机器和它们的远程主服务器进行独立通...