KwickClips Databases and SQL · 39 sec · free
Where is DISTINCT written?
Short answer. Right after SELECT.
Does AS rename the column in the table?
No. Only in the output.
Remember
| DISTINCT: no repeats |
| AS: new column heading |
| The table does not change |
Your city list repeats Surat. How do you show it once? Distinct removes repeats. As gives the column a new heading, Town, only in the output. Distinct removes repeats. As renames the heading. The table stays the same.
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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