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Parameter and Keyword Description:
collection_name:
This keyword identifies the index-by table, nested table, or varray formerly declared within the present scope.
cursor_variable_name:
This keyword a PL/SQL cursor variable formerly declared within the present scope. Only the value of the other cursor variable can be assigned to the cursor variable.
object_name:
This keyword identifies an object (instance of the object type) formerly declared within the present scope.
record_name:
This keyword identifies a user-defined or %ROWTYPE record formerly declared within the present scope.
record_name.field_name:
This keyword identifies the field in a user-defined or %ROWTYPE record formerly declared within the present scope.
table_name.column_name:
This refers to the table and column that should be accessible when the declaration is explained.
variable_name:
This keyword identifies a variable formerly declared in similar scope.
Anatomy of a Table: Figure shows the terminology used in SQL to refer to parts of the structure of a table. As you can see, SQL has no official terms for its counterpa
The Package Body The package specification is implemented by the package body. That is, the package body has the definition of every cursor and the subprogram declared in the p
Bitmap Join Indexes - This feature will increase the performance and detains the size and format of your databases in data Character Semantics and Globalization -This featur
Parameter and Keyword Description: dynamic_string: This is a string variable, literal, or expression which represents a SQL statement or the PL/SQL block. define_vari
Semidifference and NOT - SQL In this section first describe the relational difference operator, named MINUS. Example here shows SQL's closest counterpart of that operator.
Example of Null operator - NiNo Rule If we wanted to make HIGHER_OF adhere to "NULL in, NULL out"-let's call it the NiNo rule-we would have to write something like what is sho
Package Specification The package specifications contain the public declarations. The scopes of these declarations are local to your database representation and global to the
Using RENAME in combination with JOIN - SQL Example gives pairs of ids of students having the same name, by joining two renamings of IS_CALLED. Example gives an equivalent ex
Remote Operations: As the illustration shows below, the PL/SQL subprograms can execute the dynamic SQL statements which refer to the objects on a remote database: PROCEDURE
Assignment Source Not a Literal - Variable Syntax: SET SN = SID (SUBSTRING (SN.C FROM 1 FOR 1)||'5');
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