You Want To Learn SQL? Here Is What I know So far...
The article provides an introduction to SQL, which stands for Structured Query Language. It outlines the different categories of SQL commands, focusing on Data Definition Language (DDL), Data Manipulation Language (DML), and Data Query Language (DQL). Examples of commands for creating, modifying, and querying databases are included to help beginners understand their practical applications.
- ▪SQL is a programming language used to communicate with relational databases.
- ▪The article covers three types of SQL commands: DDL, DML, and DQL.
- ▪Examples are provided for commands such as CREATE, INSERT, and SELECT to illustrate their use.
Story provenance
Source · retrieval · rights · ranking — open for full record
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Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | DEV Community |
| Canonical URL | https://dev.to/claremwangi/you-want-to-learn-sql-here-is-what-i-know-so-far-4k0n |
| Publication time | Tue, 28 Apr 2026 12:12:59 +0000 |
| Retrieval time | 2026-04-28T12:24:31.929Z |
| Last seen | 2026-04-28T12:24:31.929Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | rZbIvNmsXxCJ |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3818875) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Clare Mwangi Posted on Apr 28 You Want To Learn SQL? Here Is What I know So far... #sql #data #analytics #beginners SQL: What is it? First of all, it stands for Structured Query language. It is one of the programming languages used to communicate with relational databases. It's used to store, extract and manipulate data in a database. There are different SQL command categorizaions used to facilate the different uses of SQL. These are: 1. DDL (Data Definition Language) 2.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at DEV Community.
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