如何在SQL Server中查找在具有多个关键字的表的所有列中搜索的记录？

Question

我想用空格分隔的任何关键字搜索所有字段中的数据

举例

表名：SampleTable

col1    |  col2  |   col3    |   col4 |  col5
-----------------------------------------------
my      |  name  |    is     | john   | Abraham
Abraham |   is   |   good    | person | null
Name    |  will  | Describe  |  a     | person

如果用户按“是”字词搜索 select * from SampleTable where allColumn=is 它必须将结果带入前两行

my      |  name  |    is     | john   | Abraham
Abraham |   is   |   good    | person | null

如果按is name 搜索。它必须带第一行

my      |  name  |    is     | john   | Abraham

如果按Abraham is 搜索。它必须带第一行和第二行

my      |  name  |    is     | john   | Abraham
Abraham |   is   |   good    | person | null

它几乎就像搜索引擎。你有什么想法吗？

Answer 1

您似乎想要全文搜索。我建议您从documentation 开始。

如果你真的想使用like并且你想按照你的方式传递的话，那么我建议拆分字符串：

with terms as (
      select cast(left(@search, charindex(' ', @search + ' ') - 1) as varchar(max)) as term,
             cast(stuff(@search, 1, charindex(' ', @search + ' ') + 1, '') as varchar(max)) as rest
      union all
      select cast(left(rest, charindex(' ', rest + ' ') - 1) as varchar(max)),
             cast(stuff(rest, 1, charindex(' ', rest + ' ') + 1, '') as varchar(max))
      from terms
      where term <> ''
    )
select s.*
from sampleTable s cross apply
     (select count(*) as numterms,
             sum(case when t.term in (col1, col2, col3, col4, col5) then 1 else 0 end) as nummatches
      from terms t
     ) tt
where tt.numterms = tt.nummatches ;