SQL Statement indentation good practice [closed]

Answer 1

I've written a code standard for our shop that is biased in the extreme towards readability/"discoverability" (the latter being primarily useful in insert-select statements):

SELECT 
    column1, 
    column2
FROM 
    table1
WHERE 
    column3 IN
    (
        SELECT TOP(1) 
            column4
        FROM 
            table2
            INNER JOIN table3 ON table2.column1 = table3.column1
    )

On more complex queries it becomes more obvious how this is useful:

SELECT
    Column1,
    Column2,
    Function1
    (
        Column1,
        Column2
    ) as Function1,
    CASE
    WHEN Column1 = 1 THEN
        a
    ELSE
        B
    END as Case1       
FROM
    Table1 t1
    INNER JOIN Table2 t2 ON t1.column12 = t2.column21
WHERE
    (
        FilterClause1
        AND FilterClause2
    )
    OR
    (
        FilterClause3
        AND FilterClause4
    )

Once you move to systems with more than a single join in most of your queries, it has been my experience that using vertical space liberally is your best friend with complex SQL.