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Page 610 of my articles, tutorials, and thoughts
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Join vs. sub-query
\# Join vs. Sub-query: Choosing the Right SQL Technique 🔄 Are you confused about whether to use a `JOIN` or a sub-query in your SQL statements? Don't worry, you're not alone! Many developers face this dilemma when writing SQL queries. In this blog post,
Save PL/pgSQL output from PostgreSQL to a CSV file
# Saving PL/pgSQL Output from PostgreSQL to a CSV File: A Handy Guide 😎💾 So, you're looking for a way to save your PL/pgSQL output from a PostgreSQL database to a CSV file? Look no further! We've got you covered with some easy solutions to this common c
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Exclude a column using SELECT * [except columnA] FROM tableA?
#### How to Exclude a Column from a SELECT Query in SQL <p>Have you ever found yourself in a situation where you needed to exclude a specific column from a SELECT query in SQL, but didn't want to manually specify all the other columns? You're not alone! I
When should I use CROSS APPLY over INNER JOIN?
## When should I use CROSS APPLY over INNER JOIN? 🤔 Are you struggling to decide whether to use CROSS APPLY or INNER JOIN in your SQL queries? Don't worry, you're not alone! It can be confusing to determine the best approach, especially when they seem to
Parameterize an SQL IN clause
# Parameterizing an SQL IN Clause: A Simple Guide 👨💻🔧 So you want to parameterize an SQL query with an IN clause that has a variable number of arguments? 🤔 No worries, we've got you covered! In this blog post, we'll walk you through common issues, pr
Insert into a MySQL table or update if exists
# How to Insert Into a MySQL Table or Update If Exists 🔄 <p>So you want to add a row to a MySQL table, but there's a catch - you want to update the row if a duplicate key already exists. Trying to figure out how to achieve this without running into error
SQL Update from One Table to Another Based on a ID Match
# Updating Account Numbers from One Table to Another Based on ID Match Updating data in one table based on the values in another table is a common task in SQL. In this blog post, we will explore a specific problem where we need to update account numbers i
Get list of all tables in Oracle?
# 📝 Getting a List of All Tables in Oracle: A Simple Guide Are you struggling to find a way to query an Oracle database and display the names of all tables in it? Look no further! In this guide, we will walk you through the steps to achieve this seemingl
Retrieving the last record in each group - MySQL
# Retrieving the Last Record in Each Group - MySQL Are you struggling to retrieve the last record in each group in MySQL? 😓 Don't worry! We've got you covered! In this blog post, we will address this common issue and provide you with easy and efficient s
How do I limit the number of rows returned by an Oracle query after ordering?
# How to Limit the Number of Rows Returned by an Oracle Query after Ordering 📊 Are you struggling with limiting the number of rows returned by an Oracle query after ordering? Do you wish you could make an Oracle query behave just like the MySQL `LIMIT` c