How do I create a table from an existing table in a PL SQL procedure?

How do I create a table from an existing table in a PL SQL procedure?

1 Answer. EXECUTE IMMEDIATE ‘create table table_2 as select col1, col2, col3, col4 from table_1’; If you create the table dynamically, though, you’d also need to use dynamic SQL every time you wanted to subsequently query the table.

How do I count the number of columns in a table in PL SQL?

select table_name, count(*) from all_tab_columns where owner = ‘SOME_USER’ group by table_name order by table_name; More details about the system catalogs can be found in the manual: ALL_TAB_COLUMNS.

Can we create multi dimensional collection in PL SQL?

Description PL/SQL doesn’t offer native support for multi-dimensional arrays, as you will find in other programming languages. You can, however, emulate these structures using nested collections.

How can you handle multiple rows without using loops in PL SQL?

Handle Multiple Rows Without Loops

1. Adding delimiters to a file which has no delimiter.
2. Data from 1 column to be separated in multiple columns.
3. Handling null in outer join.
4. Datastage – flat file concat header.
5. Single row converted into multiple rows using transformer stage.

What is Plsql table?

Objects of type TABLE are called PL/SQL tables, which are modeled as (but not the same as) database tables. Like an array, a PL/SQL table is an ordered collection of elements of the same type. Each element has a unique index number that determines its position in the ordered collection.

Can we create table using procedure?

Yes, you can create a table through a procedure.

How do I find the number of columns in a SQL table?

Query to count the number of columns in a table: select count(*) from user_tab_columns where table_name = ‘tablename’; Replace tablename with the name of the table whose total number of columns you want returned.

How do I find the number of columns in a table in SQL Server?

SELECT count(*) as No_of_Column FROM information_schema. columns WHERE table_name =’geeksforgeeks’; Here, COUNT(*) counts the number of columns returned by the INFORMATION_SCHEMA . columns one by one and provides the final count of the columns.

Is table of number index by Binary_integer?

Index-By Tables (Associative Arrays) The first type of collection is known as index-by tables. These behave in the same way as arrays except that have no upper bounds, allowing them to constantly extend. As the name implies, the collection is indexed using BINARY_INTEGER values, which do not need to be consecutive.

What is index by table in PL SQL?

Index-By Table. An index-by table (also called an associative array) is a set of key-value pairs. Each key is unique and is used to locate the corresponding value. The key can be either an integer or a string.

How do I run a query in PL SQL?

Assuming you already have a connection configured in SQL Developer:

1. from the View menu, select DBMS Output.
2. in the DBMS Output window, click the green plus icon, and select your connection.
3. right-click the connection and choose SQL worksheet.
4. paste your query into the worksheet.
5. run the query.

How do I write a query in PL SQL?

PL/SQL SELECT INTO examples

1. First, declare a variable l_customer_name whose data type anchors to the name columns of the customers table.
2. Second, use the SELECT INTO statement to select value from the name column and assign it to the l_customer_name variable.
3. Third, show the customer name using the dbms_output.