如何在 SQL Server 数据库中搜索字符串?

2021-12-07 00:00:00 function search sql-server stored-procedures

我知道这是可能的，但我不知道怎么做.

I know it's possible, but I don't know how.

我需要在 SQL Server 数据库中搜索所有提及特定字符串的内容.

I need to search an SQL Server database for all mentions of a specific string.

例如:我想搜索所有表、视图、函数、存储过程...以查找字符串tblEmployes"(不是表中的数据).

For example: I would like to search all tables, views, functions, stored procedures, ... for string "tblEmployes" (not data within the tables).

我需要这个的原因之一是我想删除一些创建的额外数据表，但我担心它们可能在过程或函数的某处使用.

One of the reasons I need this is I would like to remove some extra data tables that are created, but I am afraid that they are maybe used somewhere in procedures or functions.

推荐答案

这将搜索特定数据库中每个表的每一列.在要搜索的数据库上创建存储过程.

This will search every column of every table in a specific database. Create the stored procedure on the database that you want to search in.

十个最常见的 SQL Server 问题及其答案:

CREATE PROCEDURE FindMyData_String
    @DataToFind NVARCHAR(4000),
    @ExactMatch BIT = 0
AS
SET NOCOUNT ON

DECLARE @Temp TABLE(RowId INT IDENTITY(1,1), SchemaName sysname, TableName sysname, ColumnName SysName, DataType VARCHAR(100), DataFound BIT)

    INSERT  INTO @Temp(TableName,SchemaName, ColumnName, DataType)
    SELECT  C.Table_Name,C.TABLE_SCHEMA, C.Column_Name, C.Data_Type
    FROM    Information_Schema.Columns AS C
            INNER Join Information_Schema.Tables AS T
                ON C.Table_Name = T.Table_Name
        AND C.TABLE_SCHEMA = T.TABLE_SCHEMA
    WHERE   Table_Type = 'Base Table'
            And Data_Type In ('ntext','text','nvarchar','nchar','varchar','char')


DECLARE @i INT
DECLARE @MAX INT
DECLARE @TableName sysname
DECLARE @ColumnName sysname
DECLARE @SchemaName sysname
DECLARE @SQL NVARCHAR(4000)
DECLARE @PARAMETERS NVARCHAR(4000)
DECLARE @DataExists BIT
DECLARE @SQLTemplate NVARCHAR(4000)

SELECT  @SQLTemplate = CASE WHEN @ExactMatch = 1
                            THEN 'If Exists(Select *
                                          From   ReplaceTableName
                                          Where  Convert(nVarChar(4000), [ReplaceColumnName])
                                                       = ''' + @DataToFind + '''
                                          )
                                     Set @DataExists = 1
                                 Else
                                     Set @DataExists = 0'
                            ELSE 'If Exists(Select *
                                          From   ReplaceTableName
                                          Where  Convert(nVarChar(4000), [ReplaceColumnName])
                                                       Like ''%' + @DataToFind + '%''
                                          )
                                     Set @DataExists = 1
                                 Else
                                     Set @DataExists = 0'
                            END,
        @PARAMETERS = '@DataExists Bit OUTPUT',
        @i = 1

SELECT @i = 1, @MAX = MAX(RowId)
FROM   @Temp

WHILE @i <= @MAX
    BEGIN
        SELECT  @SQL = REPLACE(REPLACE(@SQLTemplate, 'ReplaceTableName', QUOTENAME(SchemaName) + '.' + QUOTENAME(TableName)), 'ReplaceColumnName', ColumnName)
        FROM    @Temp
        WHERE   RowId = @i


        PRINT @SQL
        EXEC SP_EXECUTESQL @SQL, @PARAMETERS, @DataExists = @DataExists OUTPUT

        IF @DataExists =1
            UPDATE @Temp SET DataFound = 1 WHERE RowId = @i

        SET @i = @i + 1
    END

SELECT  SchemaName,TableName, ColumnName
FROM    @Temp
WHERE   DataFound = 1
GO

要运行它，只需执行以下操作:

To run it, just do this:

exec FindMyData_string 'google', 0

效果非常好！！！

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