What is a SQL JOIN, and what are the different types?
Technically, it returns the result set of a query without WHERE-Clause. As per SQL concern and advancement, there are 3-types of joins and all RDBMS joins can be achieved using these types of …
What are the various join types in Spark? - Stack Overflow
2 Spark data frame support following types of joins between two dataframes. Please find the list of joins and joining string with respect to join types along with scala syntax. We can use following joining …
Difference between numeric, float and decimal in SQL Server
Jun 29, 2009 · What are the differences between numeric, float and decimal datatypes and which should be used in which situations? For any kind of financial transaction (e.g. for salary field), which one is …
.net - C# Equivalent of SQL Server DataTypes - Stack Overflow
SQL Server and the .NET Framework are based on different type systems. For example, the .NET Framework Decimal structure has a maximum scale of 28, whereas the SQL Server decimal and …
What's best SQL datatype for storing JSON string?
Feb 9, 2012 · Update: SQL Server 2016 will have native JSON support - a new JSON datatype (which is based on nvarchar) will be introduced, as well as a FOR JSON command to convert output from a …
sql - What are the different types of indexes, what are the benefits of ...
What are the different types of indexes, what are the benefits of each? I heard of covering and clustered indexes, are there more? Where would you use them?
pyspark data type translation to sql server data types on df.write
Aug 1, 2023 · The specified types should be valid spark sql data types. But how do they translate to sql server types? I could not find a mapping table. For instance, float gets translated to REAL in sql …
SQL Server Text type vs. varchar data type - Stack Overflow
I have variable length character data and want to store in SQL Server (2005) database. I want to learn some best practices about how to choose TEXT SQL type or choose VARCHAR SQL type, pros and …
jdbc: Get the SQL Type Name from java.sql.Type code
To specifically answer "Get the SQL Type Name from java.sql.Type code", if you are using a version of java that can do reflection, here is a small utility method that pretty much does the same thing:
Interpreting type codes in sys.objects in SQL Server
On SQL Server, the sys.objects table includes "Type" and "Type_Desc" attributes. For example, for one of my DBs: SELECT DISTINCT [Type], Type_Desc FROM Sys.Objects ORDER BY [Type] Returns: C