有没有办法在SQL Server数据库的所有表中搜索字符串?
我想搜索字符串，比如john。结果应该显示包含john的表和它们各自的行。
当前回答
[CREATE PROC SearchAllTables ( @SearchStr nvarchar(100) ) AS
BEGIN
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
EXEC SearchAllTables 'Computer'][1]
[1]: https://koukia.ca/search-for-a-string-in-all-tables-and-all-fields-of-a-database-with-tsql-b6f8a1bfda37
其他回答
不需要嵌套循环(遍历表的外部循环和遍历所有表列的内部循环)。可以从INFORMATION_SCHEMA中检索所有(或任意选择/筛选的)表-列组合。COLUMNS和在一个循环中简单地遍历(搜索)所有它们:
DECLARE @search VARCHAR(100), @table SYSNAME, @column SYSNAME
DECLARE curTabCol CURSOR FOR
SELECT c.TABLE_SCHEMA + '.' + c.TABLE_NAME, c.COLUMN_NAME
FROM INFORMATION_SCHEMA.COLUMNS c
JOIN INFORMATION_SCHEMA.TABLES t
ON t.TABLE_NAME=c.TABLE_NAME AND t.TABLE_TYPE='BASE TABLE' -- avoid views
WHERE c.DATA_TYPE IN ('varchar','nvarchar') -- searching only in these column types
--AND c.COLUMN_NAME IN ('NAME','DESCRIPTION') -- searching only in these column names
SET @search='john'
OPEN curTabCol
FETCH NEXT FROM curTabCol INTO @table, @column
WHILE (@@FETCH_STATUS = 0)
BEGIN
EXECUTE('IF EXISTS
(SELECT * FROM ' + @table + ' WHERE ' + @column + ' = ''' + @search + ''')
PRINT ''' + @table + '.' + @column + '''')
FETCH NEXT FROM curTabCol INTO @table, @column
END
CLOSE curTabCol
DEALLOCATE curTabCol
[CREATE PROC SearchAllTables ( @SearchStr nvarchar(100) ) AS
BEGIN
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
EXEC SearchAllTables 'Computer'][1]
[1]: https://koukia.ca/search-for-a-string-in-all-tables-and-all-fields-of-a-database-with-tsql-b6f8a1bfda37
这很有帮助。我想把这个函数导入到Postgre SQL数据库。我想把它分享给感兴趣的人。会有几个小时。注意:这个函数创建了一个SQL语句列表，可以在Postgre数据库上复制和执行。也许比我聪明的人可以让Postgre在一个函数中创建并执行所有语句。
CREATE OR REPLACE FUNCTION SearchAllTables(_search text) RETURNS TABLE( txt text ) as $funct$
DECLARE __COUNT int;
__SQL text;
BEGIN
EXECUTE 'SELECT COUNT(0) FROM INFORMATION_SCHEMA.COLUMNS
WHERE DATA_TYPE = ''text''
AND table_schema = ''public'' ' INTO __COUNT;
RETURN QUERY
SELECT CASE WHEN ROW_NUMBER() OVER (ORDER BY table_name) < __COUNT THEN
'SELECT ''' || table_name ||'.'|| column_name || ''' AS tbl, "' || column_name || '" AS col FROM "public"."' || "table_name" || '" WHERE "'|| "column_name" || '" ILIKE ''%' || _search || '%'' UNION ALL'
ELSE
'SELECT ''' || table_name ||'.'|| column_name || ''' AS tbl, "' || column_name || '" AS col FROM "public"."' || "table_name" || '" WHERE "'|| "column_name" || '" ILIKE ''%' || _search || '%'''
END AS txt
FROM INFORMATION_SCHEMA.COLUMNS
WHERE DATA_TYPE = 'text'
AND table_schema = 'public';
END
$funct$ LANGUAGE plpgsql;
在这篇文章中已经提到过几次的答案，我已经采用了一点，因为我也只需要在一个表中搜索:
(并且使表名的输入更简单一点)
ALTER PROC dbo.db_compare_SearchAllTables_sp
(
@SearchStr nvarchar(100),
@TableName nvarchar(256) = ''
)
AS
BEGIN
if PARSENAME(@TableName, 2) is null
set @TableName = 'dbo.' + QUOTENAME(@TableName, '"')
declare @results TABLE(ColumnName nvarchar(370), ColumnValue nvarchar(3630))
SET NOCOUNT ON
DECLARE @ColumnName nvarchar(128) = '', @SearchStr2 nvarchar(110)
SET @SearchStr2 = QUOTENAME('%' + @SearchStr + '%','''')
IF @TableName <> ''
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 + ' WITH (NOLOCK) ' +
' WHERE ' + @ColumnName + ' LIKE ' + @SearchStr2
)
END
END
ELSE
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 + ' WITH (NOLOCK) ' +
' WHERE ' + @ColumnName + ' LIKE ' + @SearchStr2
)
END
END
END
SELECT ColumnName, ColumnValue FROM @results
END
不要忽略@Brandon的精彩回答，但OP要求“结果应该显示表及其各自的行”。我基于来自@Brandon的原始答案创建了一个记录级解决方案，该解决方案还通过简单地将所有适当的列连接到一个字符串中来避免使用其他人在这里使用的游标。(我感觉这样做会更好，但我真的没有比较过结果-请随意这样做并在这里提供反馈。)
注意，我使用了STRING_AGG函数来连接列。如果你使用的是旧版本的SQL Server，你可能需要使用可以在网上找到的替代方法之一。
CREATE PROC [dbo].[SearchAllTablesByRecord]
(
@SearchStr NVARCHAR(100)
)
AS
BEGIN
SET NOCOUNT ON
DECLARE @TableName NVARCHAR(256), @SearchStr2 NVARCHAR(110)
DECLARE @ColumnList NVARCHAR(2048), @ColumnJoin NVARCHAR(2048)
SET @TableName = ''
SET @SearchStr2 = QUOTENAME('%' + @SearchStr + '%','''')
WHILE @TableName IS NOT NULL
BEGIN
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
)
PRINT @TableName -- For progress monitoring
SET @ColumnList =
(
SELECT STRING_AGG(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')
)
SET @ColumnJoin = REPLACE(@ColumnList,',','+')
IF @ColumnList <> ''
EXEC
(
'SELECT ''' + @TableName + ''' AS [Table],' + @ColumnList + '
INTO #Results
FROM ' + @TableName + ' (NOLOCK) ' +
' WHERE ' + @ColumnJoin + ' LIKE ' + @SearchStr2 + '
IF @@ROWCOUNT > 0 SELECT * FROM #Results'
)
END
END
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