2 deleted 161 characters in body
source | link

You just need double quotes instead of single quotes, I thinkto specify that it's a UTF-8 collation:

SELECT name
FROM product_categ
ORDER BY name COLLATE "th_TH";"th_TH.UTF-8";

According to the documentation page, all the code samples use double quotes.

You just need double quotes instead of single quotes, I think:

SELECT name
FROM product_categ
ORDER BY name COLLATE "th_TH";

According to the documentation page, all the code samples use double quotes.

You need to specify that it's a UTF-8 collation:

SELECT name
FROM product_categ
ORDER BY name COLLATE "th_TH.UTF-8";
1
source | link

You just need double quotes instead of single quotes, I think:

SELECT name
FROM product_categ
ORDER BY name COLLATE "th_TH";

According to the documentation page, all the code samples use double quotes.