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Chapter 9. Functions and Operators - PostgreSQL
PostgreSQL provides a large number of functions and operators for the built-in data types. This chapter describes most of them, although additional special-purpose functions appear in relevant sections of the manual. Users can also define their own functions and operators, as described in Part V.The psql commands \df and \do can be used to list all available functions and operators, respectively.
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SQL Language Expressions - SQLite
Operators, and Parse-Affecting Attributes. Operators shown within the same table cell share precedence. " [expr] " denotes operand locations for non-binary operators. Operators with no "[expr]" adjunct are binary and left-associative. The COLLATE clause (with its collation-name) acts as a single postfix operator.
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Introduction of Relational Algebra in DBMS - GeeksforGeeks
Relational Algebra is a formal language used to query and manipulate relational databases, consisting of a set of operations like selection, projection, union, and join. It provides a mathematical framework for querying databases, ensuring efficient data retrieval and manipulation.
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Functions (alphabetical) in GoogleSQL | Spanner | Google Cloud
Converts a JSON array of booleans to a SQL ARRAY<BOOL> value. Gets the number of BYTES in a STRING or BYTES value. Convert the results of an expression to the given type. Synonym of CEIL. Gets...
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15 Advanced SQL Concepts With Examples (2025 Edition)
While basic SQL equips you with standard operations like filtering, sorting, and altering tables, advanced SQL delves deeper, offering functionalities like window functions, aggregate functions, pivoting techniques, and many more. Advanced SQL enables you to manage:
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DBMS Relational Algebra - Tpoint Tech - Java
Special relational operations include the following operations: Let's explain each one by one in detail. 1. Select Operation: The select operation also known as restriction operation results in a new relation that contains those rows of relation that satisfy a specified condition. The select operation selects tuples that satisfy a given predicate.
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9.19. Array Functions and Operators - PostgreSQL
Table 9.54 shows the specialized operators available for array types. In addition to those, the usual comparison operators shown in Table 9.1 are available for arrays.
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SQL Commands Cheat Sheet - Download in PDF & JPG Format - Intellipaat
SQL is a basic query language that every programmer must know. This cheat sheet will guide you through the basic SQL queries required to learn and work on SQL. You can also download the printable PDF of this SQL command cheat sheet. The commands in SQL are called Queries and they are of two types.
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SQL Data Types - GeeksforGeeks
In this article, we will learn a comprehensive overview of SQL Data Types, their significance, and practical examples for various real-world scenarios. We will cover different SQL Data Types like Numeric, Date and time, Character, etc.
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3. Descriptions of built-in scalar SQL functions - SQLite
Date & Time functions, aggregate functions, window functions, math functions, and JSON functions are documented separately. An application may define additional functions written in C and added to the database engine using the sqlite3_create_function () API.