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What is the equivalent of VARCHAR2 in SQL Server?
Datatypes translation between Oracle and SQL Server part 1: character, binary strings
| Oracle(source) | SQL Server(target) |
|---|---|
| VARCHAR2(size [BYTE | CHAR]) | varchar(size) |
| NCHAR[(size)] | nchar[(size)] |
| NVARCHAR2(size) | nvarchar(size) |
| long | varchar(max) |
What is row type in Oracle?
The %ROWTYPE attribute provides a record type that represents a row in a database table. The record can store an entire row of data selected from the table or fetched from a cursor or cursor variable. Variables declared using %ROWTYPE are treated like those declared using a datatype name.
What is the difference between VARCHAR and char in SQL Server?
The short answer is: VARCHAR is variable length, while CHAR is fixed length. CHAR takes up 1 byte per character. So, a CHAR(100) field (or variable) takes up 100 bytes on disk, regardless of the string it holds. VARCHAR is a variable length string data type, so it holds only the characters you assign to it.
What is difference between Rowtype and type record?
%TYPE : Used to declare a field with the same type as that of a specified table’s column. %ROWTYPE: Used to declare a record with the same types as found in the specified table, view or cursor (= multiple columns).
Is there an equivalent of SQL Server’s table variables?
Does Oracle have an equivalent of SQL Server’s table variables? In SQL Server, you can declare a table variable ( DECLARE @table TABLE ), which is produced while the script is run and then removed from memory. Does Oracle have a similar function?
Is there an equivalent to Oracle’s rownum in SQL Server?
There is no direct equivalent to Oracle’s rownum or row id in SQL Server. Strictly speaking, in a relational database, rows within a table are not ordered and a row id won’t really make sense. But if you need that functionality, consider the following three alternatives: Add an IDENTITY column to your table.
What’s the difference between Microsoft SQL and Oracle?
The date/time precision in Microsoft SQL Server is 1/300th of a second. Oracle has the data type TIMESTAMP which has a precision of 1/100000000th of a second. Oracle also has a DATE data type that stores date and time values accurate to one second. SQL Developer has a default mapping to the DATE data type.
How are reserved words different in Oracle and SQL?
Reserved words differ between Oracle and Microsoft SQL Server. Many Oracle reserved words are valid object or column names in Microsoft SQL Server. For example, DATE is a reserved word in Oracle, but it is not a reserved word in Microsoft SQL Server. Therefore, no column is allowed to have the name DATE in Oracle,…