MSSQL 全文搜索 指定字符串

平时在在MSSql中查询数据的时候，想查找，某个字段在数据库中是否存在，并且查询出在哪个表中，哪个字段下面，在不知道的情况下，操作起来会很麻烦，然后就尝试些了一个sql语句，使用起来感觉挺方便的。当然了，也可以做成存储过程，来使用。

--一般查询

DECLARE @string VARCHAR(max)

SET @string=‘七岁童年‘--要查询的字符串

DECLARE @tbname VARCHAR(50)
DECLARE tbroy CURSOR FOR
  SELECT name
  FROM   sysobjects
  WHERE  xtype = ‘u ‘ --遍历所有的表

OPEN tbroy

FETCH next FROM tbroy INTO @tbname

--创建临时表
IF Object_id(‘Tempdb..#temp_table‘) IS NOT NULL
  DROP TABLE #temp_table

CREATE TABLE #temp_table
  (
     ID      INT IDENTITY(1, 1),
     tbname  VARCHAR(max),--表名
     colname VARCHAR(max)--字段名
  )

WHILE @@fetch_status = 0
  BEGIN
      DECLARE @colname VARCHAR(50)
      DECLARE colroy CURSOR FOR
        SELECT name
        FROM   syscolumns
        WHERE  id = Object_id(@tbname)
               AND xtype IN (SELECT xtype
                             FROM   systypes
                             WHERE  name IN ( ‘varchar ‘, ‘nvarchar ‘, ‘char ‘, ‘nchar ‘ ) --数据类型为字符型的字段
                            ) --第二个游标是第一个游标的嵌套游标，遍历某个表的所有字段

      OPEN colroy

      FETCH next FROM colroy INTO @colname

      WHILE @@fetch_status = 0
        BEGIN
            DECLARE @sql NVARCHAR(1000),
                    @j   INT

            SELECT @sql = ‘select @i=count(1) from ‘ + @tbname
                          + ‘ where ‘ + @colname + ‘ like ‘ + ‘‘‘%‘ + @string
                          + ‘%‘‘‘

            EXEC Sp_executesql
              @sql,
              N‘@i int output‘,
              @i=@j output --输出满足条件表的记录数
            IF @j > 0
              BEGIN
                  INSERT INTO #temp_table
                  SELECT @tbname,
                         @colname
              --exec( ‘select distinct ‘[email protected]+‘ from ‘ [email protected] + ‘ where ‘+ @colname+ ‘ like ‘+ ‘‘‘%‘[email protected]+ ‘%‘‘‘)
              END

            FETCH next FROM colroy INTO @colname
        END

      CLOSE colroy

      DEALLOCATE colroy

      FETCH next FROM tbroy INTO @tbname
  END

CLOSE tbroy

DEALLOCATE tbroy

SELECT id, tbname as ‘表名‘, colname as ‘字段名‘FROM   #temp_table

IF Object_id(‘Tempdb..#temp_table‘) IS NOT NULL--删除临时表
  DROP TABLE #temp_table
go

--存储过程实现
--创建存储过程
CREATE PROC Search (@string NVARCHAR(max))
AS
  BEGIN
      DECLARE @tbname VARCHAR(50)
      DECLARE tbroy CURSOR FOR
        SELECT name
        FROM   sysobjects
        WHERE  xtype = ‘u ‘ --遍历所有的表
      OPEN tbroy

      FETCH next FROM tbroy INTO @tbname

      --创建临时表
      IF Object_id(‘Tempdb..#temp_table‘) IS NOT NULL
        DROP TABLE #temp_table

      CREATE TABLE #temp_table
        (
           ID      INT IDENTITY(1, 1),
           tbname  VARCHAR(max),--表名
           colname VARCHAR(max)--字段名
        )

      WHILE @@fetch_status = 0
        BEGIN
            DECLARE @colname VARCHAR(50)
            DECLARE colroy CURSOR FOR
              SELECT name
              FROM   syscolumns
              WHERE  id = Object_id(@tbname)
                     AND xtype IN (SELECT xtype
                                   FROM   systypes
                                   WHERE  name IN ( ‘varchar ‘, ‘nvarchar ‘, ‘char ‘, ‘nchar ‘ ) --数据类型为字符型的字段
                                  ) --第二个游标是第一个游标的嵌套游标，遍历某个表的所有字段
            OPEN colroy

            FETCH next FROM colroy INTO @colname

            WHILE @@fetch_status = 0
              BEGIN
                  DECLARE @sql NVARCHAR(1000),
                          @j   INT

                  SELECT @sql = ‘select @i=count(1) from ‘ + @tbname
                                + ‘ where ‘ + @colname + ‘ like ‘ + ‘‘‘%‘ + @string
                                + ‘%‘‘‘

                  EXEC Sp_executesql
                    @sql,
                    N‘@i int output‘,
                    @i=@j output --输出满足条件表的记录数

                  IF @j > 0
                    BEGIN
                        INSERT INTO #temp_table
                        SELECT @tbname,
                               @colname
                    --exec( ‘select distinct ‘[email protected]+‘ from ‘ [email protected] + ‘ where ‘+ @colname+ ‘ like ‘+ ‘‘‘%‘[email protected]+ ‘%‘‘‘)
                    END

                  FETCH next FROM colroy INTO @colname
              END

            CLOSE colroy

            DEALLOCATE colroy

            FETCH next FROM tbroy INTO @tbname
        END

      CLOSE tbroy

      DEALLOCATE tbroy

      SELECT id,
             tbname  AS ‘表名‘,
             colname AS ‘字段名‘
      FROM   #temp_table

      IF Object_id(‘Tempdb..#temp_table‘) IS NOT NULL--删除临时表
        DROP TABLE #temp_table
  END

go

--使用方法
EXEC Search ‘七岁童年‘