Question

我正在使用SQL Server2016。我正在搜索TableA，并希望它不返回TableA的特定列中存在TableB中的一项术语的任何行。

假设我有以下示例表：

DECLARE @SearchTerms TABLE (word NVARCHAR(10))

INSERT INTO @SearchTerms
    SELECT
        v
    FROM 
        (VALUES ('ABC'), ('DEF')) vals(v)

SELECT * FROM @SearchTerms

DECLARE @MyStrings TABLE 
                   (
                        ID  INT,
                        string NVARCHAR(MAX)
                   )

INSERT INTO @MyStrings
    SELECT
        v, x
    FROM 
        (VALUES (1, 'This is the first sentence and has nothing'),
                (2, 'This is the second sentence and has ABC only'),
                (3, 'This is the third sentence and has DEF only'),
                (4, 'This is the fourth sentence and has ABC and DEF together')) vals(v,x)

SELECT * FROM @MyStrings

在表@SearchTerms中，我有ABC和DEF。我要在字符串值不包含ABC或DEF的select * from table @MyStrings中。

类似这样的东西：

SELECT * 
FROM @MyStrings
WHERE string NOT LIKE (SELECT word FROM @SearchTerms)

Answer 1

如果搜索项不能为空，则可以使用LIKE保留搜索项的联接，并过滤搜索项为null的所有行。

SELECT s.*
       FROM @mystrings s
            LEFT JOIN @searchterms t
                      ON s.string LIKE concat('%', t.word, '%')
       WHERE t.word IS NULL;

db<>fiddle

如果它们可以为空，则可以将它们排除在ON子句中。

SELECT s.*
       FROM @mystrings s
            LEFT JOIN @searchterms t
                      ON s.string LIKE concat('%', t.word, '%')
                         AND t.word IS NOT NULL
       WHERE t.word IS NULL;

SQL Server：从动态值表中选择列不包含任何值的所有行

1 个答案: