How is PL SQL Developer interview?
Top 65 PL/SQL Interview Questions & Answers (2021 Update)
- What is PL SQL ?
- Differentiate between % ROWTYPE and TYPE RECORD.
- Explain uses of cursor.
- Show code of a cursor for loop.
When a DML statement is executed in which cursor attributes the outcome of the statement is saved?
Q #20) When a DML statement is executed, in which cursor attributes, the outcome of the statement is saved? Answer: The outcome of the statement is saved in 4 cursor attributes.
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.
What PL SQL used for?
PL/SQL lets you use all SQL data manipulation, cursor control, and transaction control statements, and all SQL functions, operators, and pseudocolumns. PL/SQL fully supports SQL data types. You need not convert between PL/SQL and SQL data types.
What is difference between SQL and Plsql?
The basic difference between two languages is that SQL executes the single query at a time whereas, Pl/SQL executes the block of code at once. SQL is a Structured Query Language whereas, PL/SQL is a Procedural Language/ Structured Query Language. You can embed SQL queries within the syntax of PL/SQL.
Which identifier is valid in PL SQL?
You can use uppercase, lowercase, or mixed case to write identifiers. PL/SQL is not case-sensitive except within string and character literals. Every character, including dollar signs, underscores, and number signs, is significant.
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.
What is cursor in PL SQL with examples?
A cursor is a pointer to this context area. PL/SQL controls the context area through a cursor. A cursor holds the rows (one or more) returned by a SQL statement. The set of rows the cursor holds is referred to as the active set.
What does PL / SQL stand for in SQL interview?
PL/SQL is an advance version of SQL. There are given top list of PL/SQL interview questions with answer. PL/SQL stands for procedural language extension to SQL. It supports procedural features of programming language and SQL both.
What are the best interview questions for SQL?
This is a list of top PL-SQL interview questions and answers compiled by industry experts working in the PL/SQL domain.
How to run PL / SQL in Oracle SQL Developer?
Once you have created and compiled a PL/SQL procedure, you can run it using Oracle SQL Developer. Perform the following steps: 1 . Right-click on EMP_LIST in the left navigator and select Run. 2 . This invokes the Run PL/SQL dialog.
Is there a tutorial for PLSQL for beginners?
PLSQL tutorial for beginners and professionals with examples on Basics, PL/SQL, syntax, data types, variables, constants, records, conditional statements, decision making, iterative statements, loops, cursors, procedures, functions, exception handling, triggers, packages and more. PL/SQL stands for Procedural Language extension of SQL.