首页 / 数据库 / SQLServer / sql server 2012 数据库所有表里查找某字符串的方法
复制代码 代码如下:
USE [数据库名称];
--1.定义需要查找的关键字。在搜索中,使用模糊搜索:LIKE "%@key_find%"
DECLARE @key_find NVARCHAR(MAX) = "123";--假设是找字符串"123"
--2.用游标Cursor_Table,遍历所有表
DECLARE Cursor_Table CURSOR FOR
SELECT name from sysobjects WHERE xtype = "u" AND name <> "dtproperties";
OPEN Cursor_Table;
DECLARE @tableName NVARCHAR(MAX);
FETCH NEXT from Cursor_Table INTO @tableName;
WHILE @@fetch_status = 0
BEGIN
DECLARE @tempSQLText NVARCHAR(MAX) = "";
--3.在表中,用游标columnCursor,遍历所有字段。注意,只遍历字符串类型的字段(列)
DECLARE columnCursor CURSOR FOR
SELECT Name FROM SysColumns WHERE ID = Object_Id( @tableName ) and
(
xtype = 35 or --text
xtype = 99 or --ntext
xtype = 167 or --varchar
xtype = 175 or --char
xtype = 231 or --nvarchar
xtype = 239 or --nchar
xtype = 241 --xml
)
OPEN columnCursor;
DECLARE @columnName NVARCHAR(MAX);
FETCH NEXT from columnCursor INTO @columnName;
WHILE @@fetch_status = 0
BEGIN
--4.在表的字段中,对每一行进行模糊搜索,并输出找到的信息。
DECLARE @DynamicSQLText NVARCHAR(MAX) = "IF ( EXISTS ( SELECT * FROM [" + @tableName + "] WHERE [" + @columnName + "] LIKE ""%" + @key_find + "%"" ) ) BEGIN DECLARE @CurrentTableCount Bigint = ( SELECT COUNT(*) From [" + @tableName + "] ); PRINT ""Find : Table [" + @tableName + "], Column [" + @columnName + "], Row Count:"" + CAST( @CurrentTableCount AS NVARCHAR(MAX) ) + "".""; END";
EXEC( @DynamicSQLText );
FETCH NEXT from columnCursor INTO @columnName
END
exec(@tempSQLText);
CLOSE columnCursor;
DEALLOCATE columnCursor;
FETCH NEXT from Cursor_Table INTO @tableName;
END
CLOSE Cursor_Table;
DEALLOCATE Cursor_Table;