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    0
    2022-12-28T14:09:09+05:30

    ____________Statement Is Used To Retrieve Records From A Database.

    Statements are a fundamental part of SQL programming. They are used to retrieve records from a database. As a developer, you will likely use statements all the time when querying a database. In this blog post, we will discuss what statements are and give you some tips on how to use them effectively.

    What is a statement?

    Statement is used to retrieve records from a database.

    Types of statements

    There are three types of statements that can be used to retrieve records from a database: SELECT, WHERE, and ORDER BY. SELECT retrieves data from a table in a database. WHERE allows you to specify criteria for selecting records from a table, and ORDER BY sorts the data retrieved by SELECT in ascending or descending order.

    How to create a statement

    When you need to retrieve records from a database, you create a statement. A statement is a collection of data that Oracle can use to access the records you want. To create a statement, you use the CREATE Statement command. You specify the name of the table or view you want to query and the columns you want to include in your statement. You can also include conditions that determine which records are returned.

    To create a statement using SQL, enter the following command at the SQL prompt:

    CREATE STATEMENT mystatement

    To create a statement using PL/SQL, enter the following command at the PL/SQL prompt:

    create function myfunction (in varchar2) returns varchar2 as begin declare retval varchar2;set retval=’ Results of ‘||to_char(sysdate);for i in 1..10000 loopretval=retval||’.’||to_char(i); end LOOP;return retval;end myfunction;

    What happens when you run a statement

    When you run a statement in SQL, Oracle Database goes through the following steps:
    1. Checks whether the statement is an insert, update, or delete statement.
    2. Determines the type of data being inserted, updated, or deleted.
    3. Uses the appropriate cursor to access the data.
    4. Enters the appropriate SQL commands to manipulate and retrieve the data.

    Conclusion

    In this article, we explored the use of a statement to retrieve records from a database. By using the correct syntax for your statement, you can easily retrieval all the records that are in a particular database table. If you want to know more about SQL statements and how to create them, be sure to read on!

    0
    2023-02-03T17:44:42+05:30

    😃 Have you ever wondered how to retrieve records from a database? Well, the answer is simple – use a statement!

    Statements are a foundational part of any database-driven application. They give us the ability to query the database and return the data that we need. In this blog post, we’ll explore how statements are used to retrieve records from a database.

    A statement is a command that is used to get data from the database. It can be used to query the database for a specific set of records, or to execute a command such as creating a new table. The most common type of statement is the Structured Query Language (SQL) statement, which is a standard language used to communicate with relational databases.

    When we want to retrieve data from a database, we can use a SELECT statement. This statement is used to tell the database what data to select from the database. The statement is written in SQL and can include a wide variety of parameters, including specific fields, conditions, ordering, and grouping.

    Once the statement is executed, the database will return the requested data in a structured format. This data can then be used to create reports, populate forms, or to update records.

    Another common type of statement used to retrieve records from a database is the UPDATE statement. This statement is used to modify existing records in the database. It can be used to change field values, add new records, or delete existing records.

    In addition to SELECT and UPDATE statements, there are also other statements used to retrieve records from a database. This includes INSERT, DELETE, and CREATE statements. Each statement has a different purpose and can be used for different tasks.

    So, as you can see, a statement is a powerful tool that can be used to retrieve records from a database. Whether you need data to create reports or to make changes to existing records, using a statement is the easiest way to get the job done. 🔍

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