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Accessing PostgreSQL Data from the Command Line

Accessing PostgreSQL Data from the Command Line PostgreSQL is a powerful, open-source relational database system. Often, … Accessing PostgreSQL Data from the Command LineRead more

Command Line, data-access, database, interactive, non-interactive, PostgreSQL, psql, query, SQL, terminal

String Comparison in SQL: Choosing Between '=' and 'LIKE'

String Comparison in SQL: Choosing Between ‘=’ and ‘LIKE’ SQL provides several ways to compare strings, … String Comparison in SQL: Choosing Between '=' and 'LIKE'Read more

case sensitivity, database, equals, like, pattern matching, performance, query, regular expressions, SQL, string-comparison, wildcard

Working with Identifiers and Schemas in PostgreSQL

PostgreSQL is a powerful, open-source relational database system. A common issue beginners (and sometimes experienced developers) … Working with Identifiers and Schemas in PostgreSQLRead more

case sensitivity, database, identifiers, naming-conventions, PostgreSQL, query, schema, search-path, SQL, table-name

Querying for Non-Null Values in MongoDB

MongoDB provides several ways to query documents based on the existence and value of fields. One … Querying for Non-Null Values in MongoDBRead more

exists, mongodb, ne, nin, non-null, query

String Matching in MongoDB Documents

Finding Documents Containing Specific Strings MongoDB provides powerful querying capabilities, and a common task is to … String Matching in MongoDB DocumentsRead more

database, find, mongodb, query, regex, regular-expression, search, string matching, text, text-index

Using LINQ to Query and Manipulate Lists in C#

Introduction to LINQ Language Integrated Query (LINQ) is a powerful feature of .NET that allows developers … Using LINQ to Query and Manipulate Lists in C#Read more

c#, count, find, first, ienumerable, index, LINQ, list, query, single, where

Date Range Queries in MySQL

Date Range Queries in MySQL MySQL provides powerful tools for querying data based on date ranges. … Date Range Queries in MySQLRead more

between, date, Date Comparison, Date Function, date-range, DateTime, indexing, MySQL, query, SQL

Retrieving All Records from Elasticsearch

Retrieving All Records from Elasticsearch Elasticsearch is a powerful, distributed, RESTful search and analytics engine. A … Retrieving All Records from ElasticsearchRead more

API, document, elasticsearch, index, match-all, query, records, retrieve, scroll, search, size

Performing Left Outer Joins in LINQ

Left outer joins are a fundamental concept in data retrieval and manipulation, allowing you to combine … Performing Left Outer Joins in LINQRead more

data-retrieval, Left Outer Join, LINQ, query

Selecting Distinct Rows with All Columns in SQL

Selecting Distinct Rows with All Columns in SQL In SQL, you often need to retrieve unique … Selecting Distinct Rows with All Columns in SQLRead more

data-retrieval, database, distinct, group by, query, row-number, select, SQL, unique-rows, window-functions

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