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Those restrictions are documented in the context of the relevant SQL syntax.The Oracle precompilers recognize other datatypes in embedded SQL programs.The table that follows summarizes Oracle built-in datatypes.Please refer to the syntax in the preceding sections for the syntactic elements.The text of this section is divided into the following sections: A datatype is either scalar or nonscalar.A scalar type contains an atomic value, whereas a nonscalar (sometimes called a "collection") contains a set of values.Each value subsequently placed in a column assumes the datatype of the column.

The syntax of Oracle datatypes appears in the diagrams that follow.

In my 18-plus years of T-SQL experience, the MERGE statement has got to be one of the most difficult statements I have had to implement.

It is powerful and multifunctional, yet it can be hard to master.

These datatypes define the domain of values that each column can contain or each argument can have.

For example, columns cannot accept the value February 29 (except for a leap year) or the values 2 or 'SHOE'.

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