Support LIMIT and OFFSET on SQL builder class

[kazuki43zoo]

Fixes gh-1518

[kazuki43zoo]

I've fixed gh-1518.

• Supports the LIMIT on select/update/delete
• Supports the OFFSET on select

WDYT?

[kezhenxu94]

LGTM. Useful feature 👍

[harawata]

@jeffgbutler ,
You recently added LIMIT/OFFSET support to dynamic-sql.
Are you OK with this, too?

[jeffgbutler]

I am OK with this.

I tried to make clear in the dynamic-sql documentation that this isn’t a “magic” method meaning that it won’t translate to something else for databases that don’t support limit and offset. But most databases do support it now so the caution is mainly for Oracle users :)

[harawata]

Thank you, @jeffgbutler !

I just checked and ANSI SQL chose FETCH FIRST as the default syntax, it seems.
https://en.wikipedia.org/wiki/Select_(SQL)#FETCH_FIRST_clause
And popular DBs started supporting this syntax.

• https://oracle-base.com/articles/12c/row-limiting-clause-for-top-n-queries-12cr1#top-n
• https://docs.microsoft.com/ja-jp/sql/t-sql/queries/select-order-by-clause-transact-sql?view=sql-server-2017
• https://www.postgresql.org/docs/8.4/sql-select.html

Anyway, I agree that LIMIT/OFFSET still is a popular syntax, so I also have no objection.
@kazuki43zoo Your call. :)

[kazuki43zoo]

@harawata @jeffgbutler @kezhenxu94 Thanks for your review!

I will merge this PR after updating documentation(plant to includes the note that same as mybatis-synamic-sql). And I consider to support "FETCH FIRST" clause by another issue.

Thank you again!