Test Your Oracle INSERT Statement Knowledge

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True / False

The INSERT statement in Oracle is used to add new rows to an existing table.

True False

The INSERT statement is used to add one or more new rows to a table.

True / False

In Oracle, you must specify values for all columns when using the INSERT statement.

True False

You do not need to specify values for all columns if the columns have default values or allow NULL values.

True / False

The INSERT INTO statement in Oracle can be used to insert data into a specific set of columns in a table.

True False

The INSERT INTO statement can specify a subset of columns in the table into which values will be inserted.

True / False

In Oracle, you can use the INSERT ALL statement to insert multiple rows into a table in a single SQL statement.

True False

The INSERT ALL statement allows you to insert multiple rows into one or more tables in a single statement.

True / False

In Oracle, the INSERT statement can include a SELECT statement to insert data from another table.

True False

The INSERT INTO ... SELECT statement allows you to insert data into a table from the result of a SELECT query.

True / False

The RETURNING clause in the INSERT statement can be used to retrieve values from the inserted row(s) in Oracle.

True False

The RETURNING clause returns values from the inserted row(s), which is useful for obtaining generated keys or other values.

True / False

In Oracle, the INSERT statement can be used within a PL/SQL block.

True False

The INSERT statement can be executed within a PL/SQL block to insert data into a table as part of a larger procedural logic.

True / False

Using the INSERT statement with the APPEND hint in Oracle will always result in faster insert operations.

True False

The APPEND hint can improve performance by performing a direct-path insert, but it depends on the use case and database configuration.

True / False

In Oracle, you can use the INSERT statement to insert data into a partitioned table.

True False

The INSERT statement can insert data into a specific partition or automatically route it based on the partition key.

Q10

True / False

The Oracle Certified Professional (OCP) exam includes knowledge on optimizing the INSERT statement for performance and understanding its interaction with triggers and constraints.

True False

The OCP certification covers advanced topics, including optimizing the INSERT statement for performance and understanding how it interacts with triggers and constraints, reflecting the candidate's comprehensive knowledge of Oracle database management.

Q11

Single Choice

What is the primary purpose of the INSERT statement in Oracle?

To modify existing records in a table. To delete records from a table. To add new records to a table.To create a new table.

The INSERT statement in Oracle is used to add new records to a table.

Q12

Single Choice

Which of the following is the correct syntax for inserting a new row into an Oracle table?

INSERT INTO EMPLOYEES (ID, NAME) VALUES (1, 'John Doe'); INSERT EMPLOYEES (ID, NAME) ADD (1, 'John Doe'); INSERT ROW INTO EMPLOYEES (ID, NAME) SET (1, 'John Doe');ADD INTO EMPLOYEES (ID, NAME) VALUES (1, 'John Doe');

The correct syntax for inserting a new row into a table in Oracle is INSERT INTO table_name (column1, column2, ...) VALUES (value1, value2, ...).

Q13

Single Choice

In Oracle, what will happen if you try to insert a record into a table without specifying a value for a column that has a DEFAULT constraint?

The column will be set to NULL. The DEFAULT value will be inserted into the column. The insert operation will fail.The column will be set to an empty string.

If a column has a DEFAULT constraint, Oracle will automatically insert the DEFAULT value if no value is specified during the insert.

Q14

Single Choice

In Oracle, how can you insert multiple rows into a table with a single INSERT statement?

INSERT INTO EMPLOYEES (ID, NAME) VALUES (1, 'John Doe'), (2, 'Jane Smith'); INSERT INTO EMPLOYEES (ID, NAME) VALUES (1, 'John Doe'); VALUES (2, 'Jane Smith'); INSERT INTO EMPLOYEES VALUES (1, 'John Doe'), (2, 'Jane Smith');INSERT ALL INTO EMPLOYEES VALUES (1, 'John Doe') INTO EMPLOYEES VALUES (2, 'Jane Smith');

Oracle allows multiple rows to be inserted with a single INSERT ALL statement, specifying each row in a separate INTO clause.

Q15

Single Choice

What will happen in Oracle if you try to insert a record into a table where the PRIMARY KEY column is not specified in the INSERT statement and has no DEFAULT or AUTO INCREMENT?

SQL Code

CREATE TABLE EMPLOYEES (
 ID NUMBER PRIMARY KEY,
 NAME VARCHAR2(100)
);

INSERT INTO EMPLOYEES (NAME)
VALUES ('Jane Smith');

The insert will succeed, and the ID column will be set to NULL. The insert will fail with an error. The ID column will be auto-generated by Oracle.The ID column will be set to zero.

The insert will fail with an error because the ID column, which is a primary key, cannot be NULL and no value or default is provided.

Q16

Single Choice

How can you insert a new row into an Oracle table, copying all values from another row in the same table?

INSERT INTO EMPLOYEES SELECT * FROM EMPLOYEES WHERE ID = 1; INSERT INTO EMPLOYEES SELECT ID, NAME FROM EMPLOYEES WHERE ID = 1; INSERT INTO EMPLOYEES (SELECT * FROM EMPLOYEES WHERE ID = 1);INSERT INTO EMPLOYEES (SELECT ID, NAME FROM EMPLOYEES WHERE ID = 1);

You can copy all values from another row using a SELECT statement within the INSERT INTO clause, specifying the columns to match the original row.

Q17

Single Choice

Consider the following Oracle SQL code. What will be the result of executing the INSERT statement?

SQL Code

CREATE TABLE ORDERS (
 ORDER_ID NUMBER PRIMARY KEY,
 CUSTOMER_ID NUMBER,
 ORDER_DATE DATE,
 STATUS VARCHAR2(10) DEFAULT 'PENDING'
);

INSERT INTO ORDERS (ORDER_ID, CUSTOMER_ID)
VALUES (1, 101);

The STATUS column will be NULL. The STATUS column will be 'PENDING'. The insert will fail due to missing values.The ORDER_DATE column will automatically be set to the current date.

The STATUS column will be set to 'PENDING' because of the DEFAULT constraint. The ORDER_DATE column will remain NULL unless explicitly set.

Q18

Single Choice

In Oracle, how can you insert a record into a table where one of the columns is a calculated value from other columns?

INSERT INTO EMPLOYEES (ID, NAME, SALARY, BONUS) VALUES (1, 'John Doe', 5000, SALARY * 0.1); INSERT INTO EMPLOYEES (ID, NAME, SALARY, BONUS) SELECT 1, 'John Doe', 5000, 5000 * 0.1 FROM DUAL; INSERT INTO EMPLOYEES (ID, NAME, SALARY, BONUS) VALUES (1, 'John Doe', 5000, 5000 * 0.1);INSERT INTO EMPLOYEES (ID, NAME, SALARY, BONUS) SET (1, 'John Doe', 5000, 5000 * 0.1);

In Oracle, you can use a SELECT statement from DUAL to insert calculated values based on other columns into a table.

Q19

Single Choice

What will happen in Oracle if you use the INSERT ALL statement to insert multiple rows, but one of the rows violates a constraint (e.g., NOT NULL, UNIQUE)?

All rows will be inserted except the one that violates the constraint. The insert operation will succeed, ignoring the constraint violation. None of the rows will be inserted, and an error will be thrown.The row with the violation will be inserted with a `NULL` value.

In Oracle, if any row in an `INSERT ALL` statement violates a constraint, the entire operation will fail, and none of the rows will be inserted.

Q20

Single Choice

In Oracle, which of the following is true about the `INSERT INTO ... SELECT` statement?

It can only be used to insert into a table with the same structure as the source table. It can insert rows from one table into another based on a condition. It requires the destination table to be empty before the operation.It automatically commits the transaction after execution.

The `INSERT INTO ... SELECT` statement in Oracle allows rows to be inserted into a table based on the results of a `SELECT` query, which can include conditions to filter rows.

Q21

Multiple Choice

Identify the SQL scripts that correctly perform an INSERT operation for a single row in Oracle.

SQL Code

You need to insert a new record into the 'employees' table with the columns 'employee_id', 'first_name', and 'last_name'.

Which of the following SQL scripts correctly implement this scenario?

INSERT INTO employees (employee_id, first_name, last_name) VALUES (101, 'John', 'Doe'); INSERT INTO employees VALUES (101, 'John', 'Doe'); INSERT INTO employees (first_name, last_name) VALUES ('John', 'Doe');INSERT INTO employees (employee_id, first_name) VALUES (101, 'John');

The INSERT statement in Oracle is used to add a single row of data into a table. The correct scripts will demonstrate how to insert values into specific columns of the 'employees' table.

Q22

Multiple Choice

Select the SQL scripts that correctly perform an INSERT operation using a SELECT statement in Oracle.

SQL Code

You need to insert data into the 'departments' table by copying the department name and location from an existing table 'old_departments'.

Which of the following SQL scripts correctly implement this scenario?

INSERT INTO departments (department_name, location) SELECT department_name, location FROM old_departments; INSERT INTO departments (department_name, location) VALUES (SELECT department_name, location FROM old_departments); INSERT INTO departments SELECT department_name, location FROM old_departments;INSERT INTO departments VALUES (SELECT department_name, location FROM old_departments);

The INSERT INTO SELECT statement is used in Oracle to insert data into a table by selecting data from another table. The correct scripts will demonstrate how to transfer data between tables.

Q23

Multiple Choice

Determine the SQL scripts that correctly perform a conditional INSERT operation in Oracle.

SQL Code

You need to insert a row into the 'projects' table only if the project name does not already exist. Implement this using a conditional INSERT.

Which of the following SQL scripts correctly implement this scenario?

INSERT INTO projects (project_id, project_name) SELECT 102, 'New Project' FROM dual WHERE NOT EXISTS (SELECT 1 FROM projects WHERE project_name = 'New Project'); INSERT INTO projects (project_id, project_name) VALUES (102, 'New Project') WHERE NOT EXISTS (SELECT 1 FROM projects WHERE project_name = 'New Project'); INSERT INTO projects SELECT 102, 'New Project' FROM dual WHERE NOT EXISTS (SELECT 1 FROM projects WHERE project_name = 'New Project');INSERT INTO projects VALUES (102, 'New Project') WHERE NOT EXISTS (SELECT 1 FROM projects WHERE project_name = 'New Project');

Conditional INSERT operations in Oracle can be implemented using the INSERT INTO SELECT statement with a WHERE clause. The correct scripts will demonstrate how to insert data conditionally.

Q24

Multiple Choice

Identify the SQL scripts that correctly perform an INSERT operation with DEFAULT values in Oracle.

SQL Code

You need to insert a new record into the 'products' table, allowing some columns to take their default values.

Which of the following SQL scripts correctly implement this scenario?

INSERT INTO products (product_id, product_name) VALUES (201, 'Gadget'); INSERT INTO products (product_id, product_name, price) VALUES (201, 'Gadget', DEFAULT); INSERT INTO products VALUES (201, 'Gadget', DEFAULT);INSERT INTO products (product_id, product_name, price) VALUES (201, 'Gadget', NULL);

Inserting data with DEFAULT values in Oracle involves omitting the columns with default constraints from the INSERT statement. The correct scripts will demonstrate how to insert data while relying on default values.

Q25

Multiple Choice

Select the SQL scripts that correctly perform a bulk INSERT operation in Oracle.

SQL Code

You need to insert multiple rows into the 'orders' table in a single INSERT statement.

Which of the following SQL scripts correctly implement this scenario?

INSERT ALL INTO orders (order_id, order_date, amount) VALUES (301, SYSDATE, 500) INTO orders (order_id, order_date, amount) VALUES (302, SYSDATE, 750) SELECT * FROM dual; INSERT INTO orders (order_id, order_date, amount) VALUES (301, SYSDATE, 500), (302, SYSDATE, 750); INSERT INTO orders SELECT 301, SYSDATE, 500 FROM dual UNION ALL SELECT 302, SYSDATE, 750 FROM dual;INSERT INTO orders (order_id, order_date, amount) VALUES (301, SYSDATE, 500); INSERT INTO orders (order_id, order_date, amount) VALUES (302, SYSDATE, 750);

Bulk INSERT operations in Oracle can be performed using the INSERT ALL or INSERT INTO SELECT statements. The correct scripts will demonstrate how to insert multiple rows at once.

Q26

Multiple Choice

Determine the SQL scripts that correctly handle inserting data into a table with an AUTO INCREMENT column in Oracle.

SQL Code

You need to insert a new row into the 'customers' table where the 'customer_id' column is automatically incremented using a sequence and trigger.

Which of the following SQL scripts correctly implement this scenario?

INSERT INTO customers (name, address) VALUES ('Alice', '123 Main St'); INSERT INTO customers (customer_id, name, address) VALUES (customer_seq.NEXTVAL, 'Alice', '123 Main St'); INSERT INTO customers (customer_id, name, address) VALUES (NULL, 'Alice', '123 Main St');INSERT INTO customers (name, address) VALUES ('Bob', '456 Maple Ave');

When inserting data into a table with an AUTO INCREMENT column, you typically do not need to specify the value for that column. The correct scripts will demonstrate how to insert data without providing the 'customer_id'.

Q27

Multiple Choice

Identify the SQL scripts that correctly handle inserting data with special characters in Oracle.

SQL Code

You need to insert a record into the 'comments' table where the 'comment_text' column includes special characters like quotes and ampersands.

Which of the following SQL scripts correctly implement this scenario?

INSERT INTO comments (comment_id, comment_text) VALUES (1, 'John said, ''Hello!'''); INSERT INTO comments (comment_id, comment_text) VALUES (1, 'This is a test & comment'); INSERT INTO comments (comment_id, comment_text) VALUES (1, q'[John said, 'Hello!']');INSERT INTO comments (comment_id, comment_text) VALUES (1, q'{This is a test & comment}');

Inserting data with special characters in Oracle requires proper escaping or using alternative quoting mechanisms. The correct scripts will demonstrate how to handle special characters in the INSERT statement.

Q28

Multiple Choice

Select the SQL scripts that correctly perform an INSERT operation using a RETURNING clause in Oracle.

SQL Code

You need to insert a new record into the 'employees' table and immediately retrieve the value of the generated 'employee_id'.

Which of the following SQL scripts correctly implement this scenario?

INSERT INTO employees (first_name, last_name) VALUES ('John', 'Doe') RETURNING employee_id INTO :new_employee_id; INSERT INTO employees (first_name, last_name) VALUES ('John', 'Doe') RETURNING employee_id INTO :employee_id; INSERT INTO employees (first_name, last_name) VALUES ('John', 'Doe'); SELECT employee_id INTO :new_employee_id FROM employees WHERE first_name = 'John' AND last_name = 'Doe';INSERT INTO employees (first_name, last_name) VALUES ('John', 'Doe') RETURNING employee_id;

The RETURNING clause in Oracle is used to return values from rows that are being inserted, updated, or deleted. The correct scripts will demonstrate how to use the RETURNING clause with an INSERT statement.

Q29

Multiple Choice

Determine the SQL scripts that correctly handle inserting data into a table with a BLOB column in Oracle.

SQL Code

You need to insert a record into the 'files' table where the 'file_data' column is of type BLOB. Implement the INSERT operation correctly.

Which of the following SQL scripts correctly implement this scenario?

INSERT INTO files (file_id, file_name, file_data) VALUES (1, 'report.pdf', :file_data); INSERT INTO files (file_id, file_name, file_data) VALUES (1, 'report.pdf', EMPTY_BLOB()); INSERT INTO files (file_id, file_name, file_data) VALUES (1, 'report.pdf', hextoraw('DEADBEEF'));INSERT INTO files (file_id, file_name, file_data) VALUES (1, 'report.pdf', :file_data); RETURNING file_data INTO :new_file_data;

Inserting data into a BLOB column in Oracle typically involves binding the binary data to the BLOB column. The correct scripts will demonstrate how to handle this scenario.

Q30

Multiple Choice

Select the SQL scripts that correctly perform an INSERT operation with a MERGE statement in Oracle.

SQL Code

You need to insert a new record into the 'sales' table if it does not exist, or update the existing record if it does. Implement this using a MERGE statement.

Which of the following SQL scripts correctly implement this scenario?

MERGE INTO sales s USING (SELECT 101 AS sale_id, 'Widget' AS product_name FROM dual) src ON (s.sale_id = src.sale_id) WHEN MATCHED THEN UPDATE SET s.product_name = src.product_name WHEN NOT MATCHED THEN INSERT (sale_id, product_name) VALUES (src.sale_id, src.product_name); MERGE INTO sales s USING dual ON (s.sale_id = 101) WHEN MATCHED THEN UPDATE SET s.product_name = 'Widget' WHEN NOT MATCHED THEN INSERT (sale_id, product_name) VALUES (101, 'Widget'); MERGE INTO sales s USING (SELECT 101 AS sale_id FROM dual) src ON (s.sale_id = src.sale_id) WHEN MATCHED THEN UPDATE SET s.product_name = 'Widget' WHEN NOT MATCHED THEN INSERT (sale_id, product_name) VALUES (src.sale_id, 'Widget');MERGE INTO sales s USING dual ON (s.sale_id = 101) WHEN MATCHED THEN UPDATE SET s.product_name = 'Widget' WHEN NOT MATCHED THEN INSERT (sale_id, product_name) VALUES (101, 'Widget');

The MERGE statement in Oracle allows conditional insertions or updates in a single operation. The correct scripts will demonstrate how to use MERGE to insert or update data based on a condition.

Oracle Database Quiz Questions