Quick Answer: How would you declare a PL SQL table of records to hold the rows selected from the worker table?

How do you declare a PL SQL table of records to hold the rows selected from EMP table?

DECLARE TYPE EmpTabTyp IS TABLE OF emp%ROWTYPE INDEX BY BINARY_INTEGER; emp_tab EmpTabTyp; i BINARY_INTEGER := 0; CURSOR c1 IS SELECT * FROM emp; BEGIN OPEN c1; LOOP i := i + 1; /* Fetch entire row into record stored by ith element.

How do you declare a record in PL SQL?

To declare a table-based record, you use the %ROWTYPE attribute with a table name. A table-based record has each field corresponding to a column in a table.

How do you declare a variable of a table in PL SQL?

Declare TABLE TYPE variables in a PL/SQL declare block. Table variables are also known as index-by table or array. The table variable contains one column which must be a scalar or record datatype plus a primary key of type BINARY_INTEGER.

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How can a table row column values be assigned to a variable in PL SQL?

A) PL/SQL SELECT INTO – selecting one column example

This variable will hold the customer name. Second, use the SELECT INTO statement to select value from the name column and assign it to the l_customer_name variable. Third, show the customer name using the dbms_output. put_line procedure.

How do you declare a record?

Record Variable Declaration

  1. Define a record type and then declare a variable of that type.
  2. Use %ROWTYPE to declare a record variable that represents either a full or partial row of a database table or view.
  3. Use %TYPE to declare a record variable of the same type as a previously declared record variable.

What is used to declare a record?

You can define a record based on a cursor. First, you must define a cursor. And then you use %ROWTYPE with the cursor variable to declare a record. The fields of the record correspond to the columns in the cursor SELECT statement.

What is record in Plsql?

A record is a data structure that can hold data items of different kinds. … Records consist of different fields, similar to a row of a database table. For example, you want to keep track of your books in a library.

What is a record in PL SQL?

A record type is a composite data type that consists of one or more identifiers and their corresponding data types. You can create user-defined record types by using the TYPE IS RECORD statement within a package or by using the CREATE TYPE (Object) statement. For example, record. …

What is record in Rdbms?

In relational databases, a record is a group of related data held within the same structure. More specifically, a record is a grouping of fields within a table that reference one particular object. The term record is frequently used synonymously with row.

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What is PL SQL in Rdbms?

PL/SQL is basically a procedural language, which provides the functionality of decision making, iteration and many more features of procedural programming languages. … One can create a PL/SQL unit such as procedures, functions, packages, triggers, and types, which are stored in the database for reuse by applications.

How do I declare a Rowtype variable in PL SQL?

Declaring variables as the type table_name %ROWTYPE is a convenient way to transfer data between database tables and PL/SQL. You create a single variable rather than a separate variable for each column. You do not need to know the name of every column.

Which keyword to declare a variable with the data type is associated with a column’s data type of a particular column in a table *?

PL/SQL variable anchors

It refers to the use of the %TYPE keyword to declare a variable with the data type is associated with a column’s data type of a particular column in a table.

How do you declare a variable by referring to the database column?

Using the %TYPE Attribute to Declare Variables

For example, suppose you want to declare variables as the same datatype as the employee_id and last_name columns in employees table. To declare variables named empid and emplname that have the same datatype as the table columns, use dot notation and the %TYPE attribute.

How do you assign a query result to a variable in SQL?

To assign a value to a variable, use the SET statement. This is the preferred method of assigning a value to a variable. A variable can also have a value assigned by being referenced in the select list of a SELECT statement.

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What is the advantage of using the type attribute to declare a PL SQL type?

The %TYPE attribute, used in PL/SQL variable and parameter declarations, is supported by the Db2® data server. Use of this attribute ensures that type compatibility between table columns and PL/SQL variables is maintained.