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10 lis 2008 · In sql server use string_agg to pivot a row field values into a column: select string_agg(field1, ', ') a FROM mytable or select string_agg(field1, ', ') within group (order by field1 dsc) a FROM mytable group by field2
Add several strings together: SELECT CONCAT ("SQL ", "Tutorial ", "is ", "fun!") AS ConcatenatedString; Try it Yourself » Definition and Usage. The CONCAT () function adds two or more expressions together. Note: Also look at the CONCAT_WS () function. Syntax. CONCAT (expression1, expression2, expression3,...) Parameter Values. Technical Details.
26 sty 2024 · The CONCAT function in MySQL is a string function that allows you to join two or more strings together. This can be incredibly useful when working with database tables where you need to combine information from different columns or add a certain format to the data you retrieve.
14 paź 2014 · Cross join (Cartesian product) on such table and use ELT to extract n-th column! Solution: SELECT ELT(seq_1_to_3.seq, foo.his_name, foo.her_name, foo.other_name) AS name FROM foo CROSS JOIN seq_1_to_3; Explanation: Virtual table seq_1_to_3 has 1 column seq and contains 3 integers in that column: 1, 2
27 sty 2024 · Concatenating multiple rows into a single string is a handy feature in MySQL 8, greatly facilitated by the GROUP_CONCAT function. This tutorial has walked you through several use cases, ranging from basic concatenations to handling null values and working with distinct values, as well as configurations for dealing with large concatenations.
18 maj 2015 · select t1.id, group_concat(t2.value) as value from table1 t1 join table2 t2 on find_in_set(t2.id,t1.value) group by t1.id
4 maj 2023 · Mastering multiple joins in SQL: Learn how to combine data from multiple tables in one query. Explore essential tips and techniques in our article.
