基于Mysql的通用分页存储过程

CREATE PROCEDURE `P_viewPage`(
$TableName VARCHAR(200), --表名称
$FieldList VARCHAR(2000), --显示列名
$PrimaryKey VARCHAR(100), --主键
$Where VARCHAR(1000), --查询条件 不含'where'字符
$Order VARCHAR(1000), --排序 不含'order by'字符，如id asc,userid desc，当@SortType=3时生效
$SortType INT, --排序规则 1:正序asc 2:倒序desc 3:多列排序
$RecorderCount INT, --记录总数 0:会返回总记录
$PageSize INT, --分页大小
$PageIndex INT, --页索引
OUT $TotalCount INTEGER, --总记录数
OUT $TotalPageCount INTEGER --总分页数
)
BEGIN

IF !(($TableName is null OR $TableName='') OR ($FieldList is null OR $FieldList='') OR ($PrimaryKey is null OR $PrimaryKey='') OR $SortType < 1 OR $SortType >3 OR $RecorderCount < 0 OR $PageSize < 0 OR $PageIndex < 0) THEN

IF ($where is null OR $where='') THEN
SET @new_where1 = ' ' ;
SET @new_where2 = ' WHERE ' ;
ELSE
SET @new_where1 =concat(' WHERE ',$where);
SET @new_where2 =concat(' WHERE ',$where,' AND ');
END IF;

IF $order='' OR $SortType = 1 OR $SortType = 2 THEN
IF $SortType = 1 THEN
SET @new_order =concat(' ORDER BY ',$PrimaryKey,' ASC' );
END IF;
IF $SortType = 2 THEN
SET @new_order =concat(' ORDER BY ',$PrimaryKey,' DESC');
END IF;
ELSE
SET @new_order =concat(' ORDER BY ',$Order);
END IF;

SET @SqlCount = concat('SELECT COUNT(*) into @TotalCount FROM ',$TableName,@new_where1);
SET @SqlCount1 = concat('SELECT CEILING((COUNT(*)+0.0)/',$PageSize,') into @TotalPageCount FROM ',$TableName,@new_where1);
IF $RecorderCount = 0 THEN
PREPARE stmt1 FROM @SqlCount;
EXECUTE stmt1;
set $TotalCount=@TotalCount;
PREPARE stmt1 FROM @SqlCount1;
EXECUTE stmt1;
set $TotalPageCount=@TotalPageCount;
ELSE
set $TotalCount = $RecorderCount;
END IF;

IF $PageIndex > CEILING(($TotalCount+0.0)/$PageSize) THEN
SET $PageIndex = CEILING(($TotalCount+0.0)/$PageSize);
END IF;

IF $PageIndex = 0 or $PageIndex = 1 THEN
SET @Sql=concat('SELECT ',$FieldList,' FROM ',$TableName,@new_where1,@new_order,' limit ',$PageSize);
ELSE
IF $SortType = 1 THEN
SET @Sql=concat('SELECT ',$FieldList,' FROM ',$TableName,@new_where2,$PrimaryKey,' > (SELECT max(',$PrimaryKey,') FROM (SELECT ',$PrimaryKey,' FROM ',$TableName,@new_where1,@new_order,' limit ',$PageSize*($PageIndex-1),' ) AS TMP) ',@new_order,' limit ',$PageSize);
END IF;
IF $SortType = 2 THEN
SET @Sql=concat('SELECT ',$FieldList,' FROM ',$TableName,@new_where2,$PrimaryKey,' < (SELECT MIN(',$PrimaryKey,') FROM (SELECT ',$PrimaryKey,' FROM ',$TableName,@new_where1,@new_order,' limit ',$PageSize*($PageIndex-1),' ) AS TMP) ',@new_order,' limit ',$PageSize);
END IF;
IF $SortType = 3 THEN
IF INSTR($Order,',') > 0 THEN
SET @Sql=concat('SELECT ',$FieldList,' FROM ',$TableName,@new_where2,$PrimaryKey,' NOT IN (SELECT ',$PrimaryKey,' FROM (SELECT ',$PrimaryKey,' FROM ',$TableName,@new_where1,@new_order,' limit ',$PageSize*($PageIndex-1),' ) a)',@new_order,' limit ',$PageSize);
ELSE
SET @new_order =concat(' ORDER BY ',$PrimaryKey,' ASC' );
SET @Sql=concat('SELECT ',$FieldList,' FROM ',$TableName,@new_where2,$PrimaryKey,' > (SELECT max(',$PrimaryKey,') FROM (SELECT ',$PrimaryKey,' FROM ',$TableName,@new_where1,@new_order,' limit ',$PageSize*($PageIndex-1),' ) AS TMP) ',@new_order,' limit ',$PageSize);
END IF;
END IF;
END IF;

Prepare stmt2 from @Sql;
execute stmt2;

END IF;
END ;