KwickClips Databases and SQL · 43 sec · free
Does MID count from 0?
Short answer. No, from 1.
What does TRIM remove?
Spaces at both ends.
Text functions
| Call | Result |
|---|---|
| MID(s,2,3) | 3 chars from 2 |
| LEFT(s,2) | first 2 |
| INSTR(s,'i') | position of i |
| LENGTH(s) | counts spaces |
Remember
| Positions start at 1 |
| UCASE, LCASE change case |
| TRIM removes outer spaces |
Does mid count positions from zero or from one? S is any text. From one. Mid, left and right cut parts. Instr finds a position. Length counts spaces too. Positions start at one. Ucase and lcase change case. Trim removes spaces.
This clip is from the full lesson: SQL Single Row Functions: Math, Text and Date — 6 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 12 Informatics Practices (065), CBSE Class 12 Informatics Practices (065), CBSE Class 12 Informatics Practices (065)
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