如何编写SQL脚本以在SQL Server数据库的任何表中查找具有字符串列且值等于关键字的行？

Question

环境：Windows，SQL Server 2008

例如，我的数据库有Table1，Table2，Table3 ... TableN，每个表都有Column1，Column2，Column3 ... ColumnN。 简单来说，它们都是字符串列。

我想找到行，无论来自哪个表，哪个列的值都是'Key'，无论哪个列。

如何编写脚本来做到这一点？

谢谢！

Answer 1

在这里查看FindMyData_String存储的过程： 在数据库的所有表的所有列中搜索特定的值以开始使用

Answer 2

CREATE PROC SearchAllTables
(
    @SearchStr nvarchar(100)
)
AS
BEGIN

DECLARE @SearchStr nvarchar(100)
SET @SearchStr = 'Wound'

CREATE TABLE #Results (ColumnName nvarchar(370), ColumnValue nvarchar(3630))

SET NOCOUNT ON

DECLARE @TableName nvarchar(256), @ColumnName nvarchar(128), @SearchStr2 nvarchar(110)
SET  @TableName = ''
SET @SearchStr2 = QUOTENAME('%' + @SearchStr + '%','''')

WHILE @TableName IS NOT NULL
BEGIN
    SET @ColumnName = ''
    SET @TableName = 
    (
        SELECT MIN(QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME))
        FROM    INFORMATION_SCHEMA.TABLES
        WHERE       TABLE_TYPE = 'BASE TABLE'
            AND QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME) > @TableName
            AND OBJECTPROPERTY(
                    OBJECT_ID(
                        QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME)
                         ), 'IsMSShipped'
                           ) = 0
    )

    WHILE (@TableName IS NOT NULL) AND (@ColumnName IS NOT NULL)
    BEGIN
        SET @ColumnName =
        (
            SELECT MIN(QUOTENAME(COLUMN_NAME))
            FROM    INFORMATION_SCHEMA.COLUMNS
            WHERE       TABLE_SCHEMA    = PARSENAME(@TableName, 2)
                AND TABLE_NAME  = PARSENAME(@TableName, 1)
                AND DATA_TYPE IN ('char', 'varchar', 'nchar', 'nvarchar')
                AND QUOTENAME(COLUMN_NAME) > @ColumnName
        )

        IF @ColumnName IS NOT NULL
        BEGIN
            INSERT INTO #Results
            EXEC
            (
                'SELECT ''' + @TableName + '.' + @ColumnName + ''', LEFT(' + @ColumnName + ', 3630) 
                FROM ' + @TableName + ' (NOLOCK) ' +
                ' WHERE ' + @ColumnName + ' LIKE ' + @SearchStr2
            )
        END
    END 
END

SELECT ColumnName, ColumnValue FROM #Results
END

Answer 3

试试这个，但这仅适用于类似的结构化表

DECLARE @Table nvarchar(100), @Column nvarchar(100)
DECLARE @SQLStringBuilder nvarchar(MAX) = ''
DECLARE MY_CURSOR Cursor
FOR SELECT sysobjects.name, syscolumns.name
    FROM sysobjects 
    JOIN syscolumns ON sysobjects.id = syscolumns.id
    JOIN systypes ON syscolumns.xtype=systypes.xtype
   WHERE sysobjects.xtype='U' and  systypes.name <> 'sysname' and systypes.name = 'nvarchar' 
ORDER BY sysobjects.name,syscolumns.colid 
Open MY_CURSOR 

Fetch NEXT FROM MY_CURSOR INTO @Table, @Column
WHILE @@FETCH_STATUS = 0
BEGIN
    SET @SQLStringBuilder = @SQLStringBuilder +  ' SELECT ''' + @Table + ''' as TableName, ''' + @Column +  ''' as ColumnName, * FROM ' + @Table + ' WHERE ' + @Column+ ' = ''Key'' UNION ALL'

Fetch NEXT FROM MY_CURSOR INTO @Table, @Column

END
CLOSE MY_CURSOR
DEALLOCATE MY_CURSOR
SET @SQLStringBuilder = SUBSTRING(@SQLStringBuilder, 0, LEN(@SQLStringBuilder)-9)
EXEC(@SQLStringBuilder)