makumbi
on Nov 21, 2022 07:02 AM
551 Views
| Call |
bookname |
author |
| 298.5 |
INTRODUCATION TO COMPUTER |
MUKASA |
| 5000 |
CARTOONS MADE EASY |
LUBEGA |
| 632.5 |
INTRODUCATION TO READING |
|
When the field for the author is empty it should consider the book name and concatenate only 3 letters from the title.
EXPECTED OUT PUT
| Call |
bookname |
author |
| 298.5MUK |
INTRODUCATION TO COMPUTER |
MUKASA |
| 500LUB |
CARTOONS MADE EASY |
LUBEGA |
| 298.5INTR |
INTRODUCATION TO READING |
|
how can i do this please help.
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arjunv
on Nov 21, 2022 07:14 AM
on Nov 21, 2022 07:18 AM
1
Hi Makumbi,
Use CASE statement with SUBSTRING function.
Please refer below sample query.
SQL
CREATE TABLE #Books
(
[Call] VARCHAR(50),
[BookName] VARCHAR(200),
[Author] VARCHAR(50)
)
INSERT INTO #Books VALUES('298.5', 'INTRODUCATION TO COMPUTER', 'MUKASA')
INSERT INTO #Books VALUES('500', 'CARTOONS MADE EASY', 'LUBEGA')
INSERT INTO #Books VALUES('632.5','INTRODUCATION TO READING','')
SELECT CASE WHEN [Author] = '' THEN [Call] + SUBSTRING([BookName],1,3)
ELSE [Call] + SUBSTRING([Author],1,3) END AS [Call], [BookName], [Author]
FROM #Books
DROP TABLE #Books
Output
| Call |
BookName |
Author |
| 298.5MUK |
INTRODUCATION TO COMPUTER |
MUKASA |
| 500LUB |
CARTOONS MADE EASY |
LUBEGA |
| 632.5INT |
INTRODUCATION TO READING |
|
