[英]Selecting conditions with jooq
在SQL中,我可以執行類型的查詢:
SELECT cost > 1000 AS above_k, name FROM products;
給我一個清單:
+---------+--------+
| above_k | name |
+---------+--------+
| true | Gold |
| false | Silver |
+---------+--------+
如何使用jooq
建模類似的查詢? 我不能這樣做(顯然):
ctx.select(Tables.PRODUCTS.COST.gt(1000))
因為,沒有方法select(Condition condition)
。 或者,如果我只是想:
SELECT cost*0.9 AS discounted_cost FROM products;
有沒有辦法用jooq做到這一點?
SELECT cost > 1000 AS above_k, name
FROM products;
ctx.select(field(PRODUCTS.COST.gt(1000)).as("above_k"), PRODUCTS.NAME)
.from(PRODUCTS)
.fetch();
SELECT cost*0.9 AS discounted_cost
FROM products;
ctx.select(PRODUCTS.COST.mul(0.9).as("discounted_cost"))
.from(PRODUCTS)
.fetch();
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