Select Query
select
Query
A database object that retrieves specific data from one or more tables is called a query. Queries are used to extract information from databases based on specified criteria and are essential for data manipulation and reporting purposes.
Selection—retrieves a subset of rows Projection—retrieves a subset of columns Joining—combines data from multiple tables
A stored procedure is a database object that retrieves specific data from one or more tables by executing a pre-defined set of SQL statements. It can accept input parameters, process the data in a controlled manner, and return the desired result set for use in applications or reports. Stored procedures help improve performance, maintain data integrity, and simplify complex queries in a database system.
SELECT: Retrieves data from one or more tables based on specified criteria. PROJECT: Retrieves selected columns from a table while excluding others. JOIN: Combines data from two or more tables based on a related column to retrieve information that spans multiple tables.
Query
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Logarithmic tables.
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