SQL – Page 6 – CodeRavo

Monitoring Oracle Database Connections

Oracle databases handle numerous connections concurrently, and monitoring these connections is crucial for performance analysis, troubleshooting, … Monitoring Oracle Database ConnectionsRead more

connections, database, database administration, monitoring, oracle, performance, sessions, SQL, v-session

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 Dates in SQL

When working with dates in SQL, it’s essential to understand how to compare and manipulate them … Working with Dates in SQLRead more

best practices, culture-invariant-formats, Date Comparison, Dates, parameterized-queries, SQL

Finding Common Entries with SQL: Retrieving Complete Songs for Selected People

Introduction In relational databases, filtering and aggregating data based on specific conditions is a common requirement. … Finding Common Entries with SQL: Retrieving Complete Songs for Selected PeopleRead more

aggregation, distinct, group by, having-clause, parameterization, SQL, subquery, where-clause

Retrieving Table Column Names in Oracle

Understanding Database Metadata When working with databases, it’s often necessary to understand the structure of the … Retrieving Table Column Names in OracleRead more

all-tab-columns, column names, data-dictionary, database, describe, metadata, oracle, SQL, table-structure

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

Identifying and Retrieving Duplicate Records in MySQL

Identifying and Retrieving Duplicate Records in MySQL Data duplication is a common issue in database management. … Identifying and Retrieving Duplicate Records in MySQLRead more

data integrity, Database Management, duplicate-records, group by, having, MySQL, self-join, SQL, subquery

Using SQL CASE Statements for Conditional Updates

The SQL CASE statement is a powerful tool that allows you to perform conditional operations on … Using SQL CASE Statements for Conditional UpdatesRead more

CASE statement, conditional-updates, join(), SQL, table-variable, where-clause

Casting Strings to Numbers in MySQL

In MySQL, when working with data that is stored as strings but needs to be used … Casting Strings to Numbers in MySQLRead more

casting, database, int, MySQL, SQL, varchar

Importing MySQL Databases from the Command Line

Importing MySQL Databases from the Command Line MySQL databases are often exported as .sql files, containing … Importing MySQL Databases from the Command LineRead more

Command Line, database, database-import, Import, MySQL, MySQL Client, source, SQL, terminal