How do I see all rows in SQL Developer?
SQL Developer: how to visualize all rows returned by a query
- View as Grid (F9 key)
- Run the script (F5 key)
How do I see all tables in PL SQL?
The easiest way to see all tables in the database is to query the all_tables view: SELECT owner, table_name FROM all_tables; This will show the owner (the user) and the name of the table. You don’t need any special privileges to see this view, but it only shows tables that are accessible to you.
How can I make SQL Developer display the number of rows returned by a query?
Question: How can I make SQL Developer display the number of rows returned by a query? Answer: Execute the query, and fetch all the rows. Two styles of execution, both show total number of rows returned.
What is true about %Rowcount in PL SQL?
%ROWCOUNT yields the number of rows affected by an INSERT , UPDATE , or DELETE statement, or returned by a SELECT INTO statement. … If a SELECT INTO statement returns more than one row, PL/SQL raises the predefined exception TOO_MANY_ROWS and %ROWCOUNT yields 1 , not the actual number of rows that satisfy the query.
Which is an SQL * Plus command?
SQL*Plus is a command-line tool that provides access to the Oracle RDBMS. SQL*Plus enables you to: Enter SQL*Plus commands to configure the SQL*Plus environment. Startup and shutdown an Oracle database.
How do I run a query in PL SQL Developer?
Assuming you already have a connection configured in SQL Developer:
- from the View menu, select DBMS Output.
- in the DBMS Output window, click the green plus icon, and select your connection.
- right-click the connection and choose SQL worksheet.
- paste your query into the worksheet.
- run the query.
How do I get a list of all tables in SQL?
Then issue one of the following SQL statement:
- Show all tables owned by the current user: SELECT table_name FROM user_tables;
- Show all tables in the current database: SELECT table_name FROM dba_tables;
- Show all tables that are accessible by the current user:
How can I see all tables in MySQL database?
To get a list of the tables in a MySQL database, use the mysql client tool to connect to the MySQL server and run the SHOW TABLES command. The optional FULL modifier will show the table type as a second output column.
How do I list all tables in a schema?
The easiest way to find all tables in SQL is to query the INFORMATION_SCHEMA views. You do this by specifying the information schema, then the “tables” view. Here’s an example. SELECT table_name, table_schema, table_type FROM information_schema.
How count all rows in SQL?
To counts all of the rows in a table, whether they contain NULL values or not, use COUNT(*). That form of the COUNT() function basically returns the number of rows in a result set returned by a SELECT statement.
How can I count duplicate rows in Oracle?
How to Find Duplicate Records in Oracle
- SELECT * FROM fruits; …
- SELECT fruit_name, color, COUNT(*) FROM fruits GROUP BY fruit_name, color; …
- SELECT fruit_name, color, COUNT(*) FROM fruits GROUP BY fruit_name, color HAVING COUNT(*) > 1;
How do I limit rows in Oracle query?
select * from ( select * from emp order by sal desc ) where ROWNUM <= 5; Have also a look at the topic On ROWNUM and limiting results at Oracle/AskTom for more information. Update 2: Starting with Oracle 12c (12.1) there is a syntax available to limit rows or start at offsets.
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.
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 use Rownum in SQL?
You can use ROWNUM to limit the number of rows returned by a query, as in this example: SELECT * FROM employees WHERE ROWNUM < 10; If an ORDER BY clause follows ROWNUM in the same query, then the rows will be reordered by the ORDER BY clause. The results can vary depending on the way the rows are accessed.