How can you handle multiple rows without using loops in PL SQL?
Handle Multiple Rows Without Loops
- Adding delimiters to a file which has no delimiter.
- Data from 1 column to be separated in multiple columns.
- Handling null in outer join.
- Datastage – flat file concat header.
- Single row converted into multiple rows using transformer stage.
Which is used to select multiple rows of data from the database and then process each row individually PL SQL Select PL SQL trigger PL SQL cursor PL SQL procedure?
In short, the cursor selects multiple rows from the database and these selected rows are individually processed within a program. There are two types of cursors: Implicit Cursor: Oracle automatically creates a cursor while running any of the commands – SELECT INTO, INSERT, DELETE or UPDATE implicitly.
How do I select multiple columns in PL SQL?
Oracle SELECT Statement
- First, specify the table name from which you want to query the data.
- Second, indicate the columns from which you want to return the data. If you have more than one column, you need to separate each by a comma (,).
When should a close statement be used in PL SQL?
After all rows have been retrieved from the result set that is associated with a cursor, the cursor must be closed. The result set cannot be referenced after the cursor has been closed. However, the cursor can be reopened and the rows of the new result set can be fetched.
How do I put multiple data in one row?
Answer. Yes, instead of inserting each row in a separate INSERT statement, you can actually insert multiple rows in a single statement. To do this, you can list the values for each row separated by commas, following the VALUES clause of the statement.
What clause must be added to a select statement in a PL SQL block?
When used in a PL/SQL block, a SELECT statement must have an INTO clause which specifies which variables should be assigned the values retrieved from the database. A SELECT statement returning no rows results in an Oracle error. Describe how and why the %TYPE attribute is used.
What is array in PL SQL?
An array is a part of collection type data and it stands for variable-size arrays. … We will study other collection types in a later chapter ‘PL/SQL Collections’. Each element in a varray has an index associated with it. It also has a maximum size that can be changed dynamically.
What are the different ways in which PL SQL can run?
You can run a procedure or function interactively by: Using an Oracle tool, such as SQL*Plus. Calling it explicitly in the code of a database application, such as an Oracle Forms or precompiler application. Calling it explicitly in the code of another procedure or trigger.
Does PL SQL support Create command?
As it says in the documentation: Only dynamic SQL can execute the following types of statements within PL/SQL program units: Data definition language (DDL) statements such as CREATE, DROP, GRANT, and REVOKE.
Is there a PL SQL engine in SQL * Plus True or false?
14 Does SQL*Plus also have a PL/SQL Engine? SQL*Plus does not have a PL/SQL Engine embedded in it. Therefore all PL/SQL code is sent directly to database engine. Such that it is way more efficient as each statement is not individually stripped off.