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Add support for LIMIT and OFFSET

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This commit is contained in:
Loic Nageleisen 2017-11-21 11:19:48 +01:00
parent adfa38baea
commit 6c4b435ae6
2 changed files with 18 additions and 3 deletions
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13
lib/rebel/sql.rb
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@ -13,14 +13,16 @@ module Rebel::SQL
exec(Rebel::SQL.drop_table(table_name))
end
def select(*fields, distinct: distinct, from: nil, where: nil, inner: nil, left: nil, right: nil)
def select(*fields, distinct: distinct, from: nil, where: nil, inner: nil, left: nil, right: nil, limit: nil, offset: nil)
exec(Rebel::SQL.select(*fields,
distinct: distinct,
from: from,
where: where,
inner: inner,
left: left,
right: right))
right: right,
limit: limit,
offset: offset))
end
def insert_into(table_name, *rows)
@ -179,7 +181,7 @@ module Rebel::SQL
SQL
end
def select(*fields, distinct: nil, from: nil, where: nil, inner: nil, left: nil, right: nil)
def select(*fields, distinct: nil, from: nil, where: nil, inner: nil, left: nil, right: nil, limit: nil, offset: nil)
raw <<-SQL
SELECT #{distinct ? "DISTINCT #{names(*distinct)}" : names(*fields)}
#{from?(from)}
@ -187,6 +189,7 @@ module Rebel::SQL
#{left?(left)}
#{right?(right)}
#{where?(where)}
#{limit?(limit, offset)}
SQL
end
@ -350,5 +353,9 @@ module Rebel::SQL
def right?(join)
join ? "RIGHT #{join}" : nil
end
def limit?(limit, offset)
limit ? "LIMIT #{value(limit)}" << (offset ? " OFFSET #{offset}" : "") : nil
end
end
end