考虑有一个名为 named 的表:People
| Id | Name | Code |
| 1 | John | 857 |
| 2 | Mike | 893 |
| 3 | Sara | 935 |
这张表在 PeopleDb 数据库中
现在我想找到“Mike”关键字。情况:
不知道在哪个数据库、表中查找。
我需要一个在所有数据库和表中搜索的查询并向我显示:
| Id | DatabaseName | TableName | ColumnName | Pk | SearchValue
| 1 | 'PeopleDb' | 'People' | 'Name' | 2 | 'Mike'
我不知道如何编写在所有数据库和表中搜索的查询。
任何帮助将不胜感激。
编辑:
这里速度不是问题，我需要这样做。
我试过这个查询，我想要相同的但搜索所有数据库。
CREATE PROC SearchAllTables
(
@SearchStr nvarchar(100)
)
AS
BEGIN
-- Copyright © 2002 Narayana Vyas Kondreddi.All rights reserved.
-- Purpose: To search all columns of all tables for a given search string
-- Written by: Narayana Vyas Kondreddi
-- Site: http://vyaskn.tripod.com
-- Tested on: SQL Server 7.0 and SQL Server 2000
-- Date modified: 28th July 2002 22:50 GMT
DECLARE @Results TABLE(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
更新:
我需要一个工作的 T-Sql 来搜索所有数据库、表、列和所有类型的变量。
当前答案在某些情况下不起作用，例如 nvarchar 字段中的连接字符串。
最佳答案
我已经按照下面更新了你的逻辑，它工作正常，请看一下:
DECLARE @SearchStr VARCHAR(50)='Surat'
DECLARE @Results TABLE(DatabaseName NVARCHAR(500), TableName nvarchar(370),ColumnName nvarchar(370), ColumnValue nvarchar(3630),PrimaryKey nvarchar(200), PrimaryKeyValue nvarchar(4000))
SET NOCOUNT ON
DECLARE @TableList AS Table
(
TableName VARCHAR(500),
RowNo INT
)
DECLARE @ColumnList AS Table
(
ColumnName VARCHAR(500),
RowNo INT
)
DECLARE @PrimaryKeyList AS Table
(
PrimaryKeyName VARCHAR(500)
)
DECLARE @TableName nvarchar(256), @ColumnName nvarchar(128), @SearchStr2 nvarchar(110), @PrimaryKey nvarchar(200), @CurrentTableName nvarchar(256)
SET @TableName = ''
SET @SearchStr2 = QUOTENAME('%' + @SearchStr + '%', '''')
DECLARE @DatabaseCount INT=0, @Index INT=0, @DatabaseName NVARCHAR(500), @TotalColumnCount INT, @ColumnIndex INT=0, @TotalTableCount INT, @TableIndex INT=0
SELECT
*,
ROW_NUMBER() OVER (ORDER BY name) AS RowNo
INTO #tblDatabases
FROM Sys.Databases
WHERE name NOT IN ('master','model','msdb','tempdb')
SELECT @DatabaseCount=COUNT (*) FROM #tblDatabases
WHILE @Index<@DatabaseCount
BEGIN
SET @Index=@Index+1
SELECT @DatabaseName='',@TableIndex=0,@ColumnIndex=0,@TableName='',@ColumnName=''
SELECT @DatabaseName=name FROM #tblDatabases WHERE RowNo=@Index
DELETE FROM @TableList
INSERT INTO @TableList
EXEC('
SELECT QUOTENAME(TABLE_SCHEMA) + ''.'' + QUOTENAME(TABLE_NAME),
ROW_NUMBER() OVER (ORDER BY TABLE_NAME)
FROM ['+@DatabaseName+'].INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = ''BASE TABLE''
')
SELECT @TotalTableCount=COUNT(*) FROM @TableList
WHILE @TableIndex<@TotalTableCount
BEGIN
SET @TableIndex=@TableIndex+1
SELECT @ColumnName = '',@ColumnIndex=0
SELECT @TableName=TableName FROM @TableList WHERE RowNo=@TableIndex
SET @CurrentTableName=REPLACE(REPLACE(REPLACE(@TableName,'[dbo].',''),'[',''),']','')
DELETE FROM @ColumnList
INSERT INTO @ColumnList
EXEC('SELECT
COLUMN_NAME,ROW_NUMBER() OVER (ORDER BY COLUMN_NAME)
FROM ['+@DatabaseName+'].INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = PARSENAME('''+@TableName+''', 2)
AND TABLE_NAME = PARSENAME('''+@TableName+''', 1)
AND DATA_TYPE IN (''char'', ''varchar'', ''nchar'', ''nvarchar'')
')
SELECT @TotalColumnCount=COUNT(*) FROM @ColumnList
WHILE @ColumnIndex<@TotalColumnCount
BEGIN
SET @ColumnIndex=@ColumnIndex+1
SET @ColumnName=''
SELECT @ColumnName=ColumnName FROM @ColumnList WHERE RowNo=@ColumnIndex
DELETE FROM @PrimaryKeyList
INSERT INTO @PrimaryKeyList
EXEC('
SELECT Col.Column_Name from
['+@DatabaseName+'].INFORMATION_SCHEMA.TABLE_CONSTRAINTS Tab,
['+@DatabaseName+'].INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE Col
WHERE
Col.Constraint_Name = Tab.Constraint_Name
AND Col.Table_Name = Tab.Table_Name
AND Constraint_Type = ''PRIMARY KEY''
AND Col.Table_Name= '''+@CurrentTableName+'''
')
SELECT @PrimaryKey=''
SELECT @PrimaryKey=PrimaryKeyName FROM @PrimaryKeyList
SET @PrimaryKey=ISNULL(@PrimaryKey,'')
IF @ColumnName IS NOT NULL AND @PrimaryKey<>''
BEGIN
INSERT INTO @Results
EXEC
(
'SELECT '''+@DatabaseName+''','''+@CurrentTableName+''',''' + @ColumnName + ''', LEFT(' + @ColumnName + ', 3630) , '''+@PrimaryKey+''', [' + @PrimaryKey + ']
FROM ['+@DatabaseName+'].' + @TableName + ' (NOLOCK) ' +
' WHERE ' + @ColumnName + ' LIKE ' + @SearchStr2
)
END
END
END
END
SELECT ROW_NUMBER() OVER (ORDER BY DatabaseName) AS Id,DatabaseName,TableName,ColumnName, ColumnValue AS SearchValue,PrimaryKeyValue AS Pk, PrimaryKey FROM @Results
DROP TABLE #tblDatabases
关于sql - 在所有数据库中搜索值，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43385508/