Concatenate text from multiple rows into a single text string and vice versa

Hello friends! Today we’ll be learning how to concatenate text from multiple rows into a single text string and vice versa. Easy to follow code attached in the tutorial. When working with large datasets in SQL Server, it’s common to need to combine text from multiple rows into a single text string. This can be useful for creating reports, generating email notifications, or creating custom messages for users. In this blog post, we’ll explore some techniques for concatenating text from multiple rows in SQL Server.

Concatenate text from multiple rows into a single text string

SELECT ID, 
TRIM(TRAILING ',' from (XMLAGG(ID2 ||  ',' ORDER BY ID ASC)(VARCHAR(100)))) AS ID2 
FROM Table1 
GROUP BY ID

Separate text from single text string to multiple rows

SELECT * 
FROM TABLE (STRTOK_SPLIT_TO TABLE(Table1.ID,Table1.ID2, ',')
RETURNS ID VARCHAR(10) CHARACTER SET UNICODE,
RNK INTEGER,
ID2 VARCHAR(10) CHARACTER SET UNICODE) AS tbl

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