KwickClips Databases and SQL · 41 sec · free
Which keeps more rows, AND or OR?
Short answer. OR.
What does NOT do?
It flips the condition.
AND, OR, NOT
| Word | Keeps row if |
|---|---|
| AND | both true |
| OR | one is true |
| NOT | it is false |
Remember
| AND: both true |
| OR: at least one true |
| NOT: flips the condition |
Which word keeps more rows, and or or? Join conditions with these. And needs both true. Or needs just one. Not flips the answer. And needs both. Or needs one. Not flips it. So or keeps more rows.
This clip is from the full lesson: SQL SELECT: Choosing Rows and Columns with WHERE — 6 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 9 Information Technology (402), CBSE Class 12 Computer Science (083), CBSE Class 11 Informatics Practices (065), CBSE Class 11 Informatics Practices (065)
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