Question

我正在尝试在sqlite中创建一个查询，该查询将返回：始于，然后包含

因此“ bou”将返回：

弹跳
弹回
关于我
想着你
等

我尝试使用带有和不带有ORDER BY的LIKE'search％'和LIKE'％search％'的联合来组合查询但我不知道。我希望能够快速高效地完成一些工作，而又不能创建2个不同的查询/结果并手动组合。有任何想法吗？谢谢

Answer 1

我相信以下内容可能会满足您的要求或接近您的要求：-

WITH cte1(search_item) AS (SELECT 'bou') -- <<<<<<<<<< search argument
SELECT 
    CASE
        WHEN mytext LIKE (select search_item FROM cte1)||'%'
            THEN mytext||' - begins with '||(select search_item FROM cte1)
        ELSE 
            mytext||' - includes '||(select search_item FROM cte1)
    END AS phrased,
    mytext
FROM mytable 
WHERE mytext LIKE '%'||(select search_item FROM cte1)||'%';

因此，使用以下内容作为测试：-

DROP TABLE IF EXISTS mytable;
CREATE TABLE IF NOT EXISTS mytable (mytext TEXT);
INSERT INTO mytable VALUES
    ('Bounce'),
    ('Bounce Back'),
    ('About Me'),
    ('About You'),
    ('Something Else'), -- ADDED to prove not found result
    ('Thinking About You')
;

WITH cte1(search_item) AS (SELECT 'bou') -- <<<<<<<<<< search argument
SELECT 
    CASE
        WHEN mytext LIKE (select search_item FROM cte1)||'%'
            THEN mytext||' - begins with '||(select search_item FROM cte1)
        ELSE 
            mytext||' - includes '||(select search_item FROM cte1)
    END AS phrased,
    mytext
FROM mytable 
WHERE mytext LIKE '%'||(select search_item FROM cte1)||'%';

结果：-

但是，以下内容可能更符合您的要求（即根据找到的数据是否以sreach参数开头或包含sreach参数进行排序）：-

WITH 
    cte1(search_item) AS (
            SELECT 'bou' -- <<<<<<<<<< search argument
        ), 
    cte2(phrased,ordering,mytext) AS (
            SELECT 
                CASE
                    WHEN mytext LIKE (select search_item FROM cte1)||'%'
                        THEN mytext||' - begins with '||(select search_item FROM cte1)
                    ELSE 
                        mytext||' - includes '||(select search_item FROM cte1)
                END AS phrased,
                    CASE
                    WHEN mytext LIKE (select search_item FROM cte1)||'%'
                        THEN 0
                    ELSE 1
                END AS ordering,
                mytext
            FROM mytable 
            WHERE mytext LIKE '%'||(select search_item FROM cte1)||'%'
        )
    SELECT mytext, phrased FROM cte2 ORDER BY ordering;
;

结果为：-

Sqlite-创建搜索查询-始于然后包括

1 个答案: