How do you input a loop in PL SQL?
10 LOOP INSERT INTO TAB (col1, col2, col3, col4, col5) VALUES (num1, num2, num3, num4, num5); END LOOP; COMMIT; END; / Enter value for num1: 1 old 2: num1 NUMBER (10) := &num1; new 2: num1 NUMBER (10) := 1; Enter value for num2: 2 old 3: num2 NUMBER (10) := &num2; new 3: num2 NUMBER (10) := 2; Enter value for num3: 3 …
How can we provide value to a program during runtime in Oracle?
To make the program more flexible, you can write the program so that a user can supply input data at runtime. When you prepare a SQL statement or PL/SQL block that contains input data to be supplied at runtime, placeholders in the SQL statement or PL/SQL block mark where data must be supplied.
How can we take input from user in Oracle?
To read the user input and store it in a variable, for later use, you can use SQL*Plus command ACCEPT .
What is prompt in SQL?
SQL prompts are part of SQL statements that you add when you write a condition to select only the data that is filtered by a specified value. When you run a query, you must specify the value for this prompt before you get the result set.
How do I prompt a user for input in PL SQL?
DECLARE variable1 NUMBER(1); variable2 CHAR(1); BEGIN DBMS_OUTPUT. PUT_LINE(‘Hello World’); variable1 := &please_enter_1_or_0; variable2 := ‘&please_enter_y_or_n’; END; Mind the difference in the last statement where the last substitution variable is quoted in a string to be properly accepted by the PL/SQL syntax.
What is Do While loop syntax in PL SQL?
PL/SQL while loop is used when a set of statements has to be executed as long as a condition is true, the While loop is used. The condition is decided at the beginning of each iteration and continues until the condition becomes false.
Syntax of while loop:
- WHILE <condition>
- LOOP statements;
- END LOOP;
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 you pass values at runtime in PL SQL?
I just use sqlplus myself. The &num is not valid PL/SQL. But by default sqlplus would substitute it for the corresponding value before passing the code to the server for parsing/executiuon. If you are actually developing programs then you need to look at bind variables for you language/framework.
What is schema trigger?
You can define triggers for the same event (such as SERVERERROR) on both the schema and database levels. … Oracle fires the trigger whenever a DROP statement removes an existing database object from the schema. ALTER. Oracle fires the trigger whenever an ALTER statement modifies an existing database object in the schema.
How do you bind variables in SQL query?
Use a bind variable in PL/SQL to access the variable from SQL*Plus. Bind variables are variables you create in SQL*Plus and then reference in PL/SQL. If you create a bind variable in SQL*Plus, you can use the variable as you would a declared variable in your PL/SQL subprogram and then access the variable from SQL*Plus.
Why we use set define off in Oracle?
If there are any, the client will stop and ask you to supply a value for the variable. At which point it’ll change your code to include this text. So unless you know your script includes these variables, it’s best to set define off. This avoids unexpected changes to your data & code!
What is substitution variable in SQL?
A substitution variable is a user variable name preceded by one or two ampersands (&). When SQL*Plus encounters a substitution variable in a command, SQL*Plus executes the command as though it contained the value of the substitution variable, rather than the variable itself.
How do you print a message in PL SQL?
“print message in pl sql” Code Answer’s
- — EXAMPLE.
- SET SERVEROUTPUT ON;
- DBMS_OUTPUT. PUT_LINE(‘This is printed. ‘ ||’This is concatenated and printed too!’ );