odbtools/odbctest/mql/aaa/15cypher/13subquery.mql

-- ============================================================
-- Cypher 子查询测试
-- ============================================================

-- 1. Cypher 子查询 - where in match (已知解析器不支持 CypherCtrl 级别的 where + 子查询)
match (a:test_graph) -[:connect]-> (b:test_graph) where a.g_name in (match (n:test_graph) where n.g_type='type_a' return n.g_name) return a, b
/**
onerror(continue,'expected [')
output()
**/
;

-- 2. Cypher 嵌套子查询 (已知服务端单节点cypher不支持)
match (a:test_graph) where a.g_value = (match (n:test_graph) where n.g_name='node_c' return max(n.g_value)) return a.g_name, a.g_type, a.g_value
/**
onerror(continue,'unsupport single node','expected')
output()
**/
;

-- 3. Cypher 聚合子查询 (已知服务端单节点cypher不支持)
match (a:test_graph) where a.g_type='type_a' return a.g_type, count(*)
/**
onerror(continue,'expected','After')
output()
**/
;

-- 4. Cypher 带 limit 的子查询 (已知服务端单节点cypher不支持)
match (a:test_graph) return a.g_name, a.g_type, a.g_value limit 3
/**
onerror(continue,'expected','After')
output()
**/
;