MySQL5.7: Paging using Mysql Stored Proc

 

 

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-- 查询外键 涂聚文 (Geovin Du) select     concat(table_name, '.', column_name) as 'foreign key',      concat(referenced_table_name, '.', referenced_column_name) as 'references' from     information_schema.key_column_usage where     referenced_table_name is not null;   -- 查询外键    select     concat(table_name, '.', column_name) as 'foreign key',      concat(referenced_table_name, '.', referenced_column_name) as 'references' from     information_schema.key_column_usage where     referenced_table_name is not null     and table_schema = 'geovindu';       --  table_name  查询表和视图 SELECT * FROM information_schema.tables     WHERE table_schema = 'geovindu'; -- 表    SELECT * FROM information_schema.tables     WHERE table_schema = 'geovindu' and table_type='base table';   -- 视图 SELECT * FROM information_schema.tables     WHERE table_schema = 'geovindu' and table_type='VIEW';  -- 列    SELECT * FROM information_schema.COLUMNS;     -- 主外键  SELECT * FROM information_schema.KEY_COLUMN_USAGE;     SELECT * FROM information_schema.PARAMETERS;     -- 存储过程，自定义函数 SELECT * FROM information_schema.PARAMETERS where Specific_schema='geovindu'; -- 'PROCEDURE' SELECT * FROM information_schema.PARAMETERS where Specific_schema='geovindu' and routine_type='PROCEDURE'; select * from information_schema.ROUTINES where  ROUTINE_SCHEMA='geovindu' and routine_type='PROCEDURE';   --  'FUNCTION' SELECT * FROM information_schema.PARAMETERS where Specific_schema='geovindu'  and routine_type='FUNCTION'; select * from information_schema.ROUTINES where  ROUTINE_SCHEMA='geovindu' and routine_type='FUNCTION';         SELECT * FROM information_schema.PROCESSLIST;      --  SELECT * FROM information_schema.SCHEMATA;     -- 表，视图  SELECT     TABLE_NAME, ENGINE, VERSION, ROW_FORMAT, TABLE_ROWS, AVG_ROW_LENGTH,     DATA_LENGTH, MAX_DATA_LENGTH, INDEX_LENGTH, DATA_FREE, AUTO_INCREMENT,     CREATE_TIME, UPDATE_TIME, CHECK_TIME, TABLE_COLLATION, CHECKSUM,     CREATE_OPTIONS, TABLE_COMMENT   FROM INFORMATION_SCHEMA.TABLES   WHERE table_schema = 'geovindu';                 -- 主键 select * from information_schema.KEY_COLUMN_USAGE;   -- https://dev.mysql.com/doc/refman/8.0/en/keywords-table.html select * from information_schema.KEYWORDS;   SELECT * FROM INFORMATION_SCHEMA.KEYWORDS;   select     concat(table_name, '.', column_name) as 'foreign key',      concat(referenced_table_name, '.', referenced_column_name) as 'references' from     information_schema.key_column_usage where     referenced_table_name is not null;       select `column_name`, `column_type`, `column_default`, `column_comment` from `information_schema`.`COLUMNS` where `table_name` = 'customerlist' and `table_schema` = 'geovindu';   select * from `information_schema`.`COLUMNS` where `table_name` = 'customerlist' and `table_schema` = 'geovindu';         select * from `information_schema`.`COLUMNS` where `table_schema` = 'geovindu';   -- column_key  PRI,MUL，UNI  pri 主键，mul 外键 -- EXTRA  auto increment 自动增长 -- DATA_TYPE 数据类型   -- 外键表与主表关系 SELECT   `TABLE_SCHEMA`,                          -- Foreign key schema   `TABLE_NAME`,                            -- Foreign key table   `COLUMN_NAME`,                           -- Foreign key column   `REFERENCED_TABLE_SCHEMA`,               -- Origin key schema   `REFERENCED_TABLE_NAME`,                 -- Origin key table   `REFERENCED_COLUMN_NAME`                 -- Origin key column FROM   `INFORMATION_SCHEMA`.`KEY_COLUMN_USAGE`  -- Will fail if user don't have privilege WHERE   `TABLE_SCHEMA` = SCHEMA()                -- Detect current schema in USE   AND `REFERENCED_TABLE_NAME` IS NOT NULL; -- Only tables with foreign keys     --   SELECT * FROM  INFORMATION_SCHEMA.KEY_COLUMN_USAGE  WHERE  TABLE_SCHEMA = 'geovindu'  AND REFERENCED_TABLE_NAME IS NOT NULL;           --   SELECT     count(1) totalrelationships ,     c.table_name tablename,     CONCAT(' ',GROUP_CONCAT(c.column_name ORDER BY ordinal_position SEPARATOR ', ')) columnname,     CONCAT(' ',GROUP_CONCAT(c.column_type ORDER BY ordinal_position SEPARATOR ', ')) columntype    FROM     information_schema.columns c RIGHT JOIN     (SELECT column_name , column_type FROM information_schema.columns WHERE     -- column_key in ('PRI','MUL') AND  -- uncomment this line if you want to see relations only with indexes     table_schema = DATABASE() AND table_name = 'productitorderdetails') AS p     USING (column_name,column_type) WHERE     c.table_schema = DATABASE()     -- AND c.table_name != 'YourTableName'     GROUP BY tablename     -- HAVING (locate(' YourColumnName',columnname) > 0) -- uncomment this line to search for specific column     ORDER BY totalrelationships desc, columnname ;   -- SELECT i.TABLE_SCHEMA, i.TABLE_NAME,        i.CONSTRAINT_TYPE, i.CONSTRAINT_NAME,        k.COLUMN_NAME, k.REFERENCED_TABLE_NAME, k.REFERENCED_COLUMN_NAME   FROM information_schema.TABLE_CONSTRAINTS i   LEFT JOIN information_schema.KEY_COLUMN_USAGE k        ON i.CONSTRAINT_NAME = k.CONSTRAINT_NAME  WHERE i.TABLE_SCHEMA = 'productitorderdetails' AND i.CONSTRAINT_TYPE = 'FOREIGN KEY'  ORDER BY i.TABLE_NAME;     --   select     concat(table_name, '.', column_name) as 'foreign key',     concat(referenced_table_name, '.', referenced_column_name) as 'references',     constraint_name as 'constraint name' from     information_schema.key_column_usage where     referenced_table_name is not null     and table_schema = 'geovindu';        SELECT CONSTRAINT_NAME, TABLE_NAME, REFERENCED_TABLE_NAME FROM information_schema.REFERENTIAL_CONSTRAINTS WHERE CONSTRAINT_SCHEMA = 'geovindu' AND REFERENCED_TABLE_NAME = 'productitorderdetails';   SELECT i.TABLE_SCHEMA, i.TABLE_NAME, i.CONSTRAINT_TYPE, i.CONSTRAINT_NAME, k.REFERENCED_TABLE_NAME, k.REFERENCED_COLUMN_NAME FROM information_schema.TABLE_CONSTRAINTS i LEFT JOIN information_schema.KEY_COLUMN_USAGE k ON i.CONSTRAINT_NAME = k.CONSTRAINT_NAME WHERE i.CONSTRAINT_TYPE = 'FOREIGN KEY' and i.table_schema = 'geovindu';     SELECT i.TABLE_NAME, i.CONSTRAINT_TYPE, i.CONSTRAINT_NAME, k.REFERENCED_TABLE_NAME, k.REFERENCED_COLUMN_NAME FROM information_schema.TABLE_CONSTRAINTS i LEFT JOIN information_schema.KEY_COLUMN_USAGE k ON i.CONSTRAINT_NAME = k.CONSTRAINT_NAME WHERE i.CONSTRAINT_TYPE = 'FOREIGN KEY' AND i.TABLE_SCHEMA = DATABASE() AND i.TABLE_NAME = 'productitorderdetails';        SELECT * FROM information_schema.REFERENTIAL_CONSTRAINTS;     SELECT   TABLE_NAME,COLUMN_NAME,CONSTRAINT_NAME, REFERENCED_TABLE_NAME,REFERENCED_COLUMN_NAME FROM   INFORMATION_SCHEMA.KEY_COLUMN_USAGE WHERE   REFERENCED_TABLE_SCHEMA = 'geovindu' AND   REFERENCED_TABLE_NAME = 'productitorderdetails';       SELECT   TABLE_NAME,COLUMN_NAME,CONSTRAINT_NAME, REFERENCED_TABLE_NAME,REFERENCED_COLUMN_NAME FROM   INFORMATION_SCHEMA.KEY_COLUMN_USAGE WHERE   REFERENCED_TABLE_SCHEMA = 'geovindu' AND   TABLE_NAME = 'productitorderdetails';             select *  from information_schema.TABLES where TABLE_SCHEMA='geovindu';              -- 主键   select table_name as 'TableName',column_name as 'FieldName',data_type as 'TypeName',ifnull(character_maximum_length,8) as 'Length',is_nullable as 'IS_NULL'  from information_schema.columns where  table_schema='geovindu' and column_key='PRI';     -- 主键 ，有注释   select a.table_name as 'TableName',a.column_name as 'FieldName',a.data_type as 'TypeName',ifnull(a.character_maximum_length,8) as 'Length',a.is_nullable as 'IS_NULL',a.COLUMN_COMMENT,b.TABLE_COMMENT  from information_schema.columns as a,information_schema.TABLES as b  where  a.table_schema='geovindu' and b.table_schema='geovindu' and column_key='PRI'  and a.table_name=b.table_name;           -- 外键   select table_name as 'TableName',column_name as 'FieldName',data_type as 'TypeName',ifnull(character_maximum_length,8) as 'Length',is_nullable as 'IS_NULL'  from information_schema.columns where  table_schema='geovindu' and column_key='MUL';       SELECT * FROM  INFORMATION_SCHEMA.KEY_COLUMN_USAGE  WHERE  TABLE_SCHEMA = 'geovindu'  AND REFERENCED_TABLE_NAME IS NOT NULL;        select a.table_name as 'TableName',a.column_name as 'FieldName',a.data_type as 'TypeName',ifnull(a.character_maximum_length,8) as 'Length',a.is_nullable as 'IS_NULL',  b.REFERENCED_TABLE_NAME,b.REFERENCED_COLUMN_NAME  from information_schema.columns as a,INFORMATION_SCHEMA.KEY_COLUMN_USAGE as b  where a.TABLE_NAME=b.TABLE_NAME and a.table_schema='geovindu' and b.table_schema='geovindu' and a.column_key='MUL'   AND b.REFERENCED_TABLE_NAME IS NOT NULL;       -- 自表外键  列有注释 select a.table_name as 'TableName',a.column_name as 'FieldName',a.data_type as 'TypeName',ifnull(a.character_maximum_length,8) as 'Length',a.is_nullable as 'IS_NULL',a.COLUMN_COMMENT,b.REFERENCED_TABLE_NAME,b.REFERENCED_COLUMN_NAME  from information_schema.columns as a,INFORMATION_SCHEMA.KEY_COLUMN_USAGE as b  where a.table_name=b.TABLE_NAME and a.COLUMN_NAME=b.COLUMN_NAME and a.table_schema='geovindu' and b.table_schema='geovindu'  and a.column_key='MUL' AND b.REFERENCED_TABLE_NAME IS NOT NULL and a.table_name='productorderdetails';      -- 主表的主键作的外键表 列有注释 select a.table_name as 'TableName',a.column_name as 'FieldName',a.data_type as 'TypeName',ifnull(a.character_maximum_length,8) as 'Length',a.is_nullable as 'IS_NULL',a.COLUMN_COMMENT, b.REFERENCED_TABLE_NAME,b.REFERENCED_COLUMN_NAME from information_schema.columns as a,INFORMATION_SCHEMA.KEY_COLUMN_USAGE as b  where a.TABLE_NAME=b.TABLE_NAME and a.COLUMN_NAME=b.COLUMN_NAME and a.table_schema='geovindu' and b.table_schema='geovindu' and a.column_key='MUL' AND b.REFERENCED_TABLE_NAME IS NOT NULL and b.REFERENCED_TABLE_NAME='unitlist';         -- 表   select table_name as 'TableName',column_name as 'FieldName',data_type as 'TypeName',ifnull(character_maximum_length,8) as 'Length',is_nullable as 'IS_NULL'  from information_schema.columns where  table_schema='geovindu' and column_key='PRI' and table_name=('orderdetails');     -- 表  select column_name as 'FieldName',data_type as 'FieldType',ifnull(character_maximum_length,8) as 'FieldLength' from information_schema.columns where table_schema='geovindu' and table_name=('orderdetails');     --  表,列表有注释  select a.column_name as 'FieldName',a.data_type as 'FieldType',ifnull(a.character_maximum_length,8) as 'FieldLength',a.COLUMN_COMMENT,b.TABLE_COMMENT from information_schema.columns as a,information_schema.TABLES as b  where a.table_schema='geovindu' and b.table_schema='geovindu' and a.TABLE_NAME=b.TABLE_NAME  and a.table_name=('orderdetails');                select *  from information_schema.columns where  table_schema='geovindu' and column_key='PRI' and table_name=('orderdetails');      -- UNI   select table_name as 'TableName',column_name as 'FieldName',data_type as 'TypeName',ifnull(character_maximum_length,8) as 'Length',is_nullable as 'IS_NULL'  from information_schema.columns where  table_schema='geovindu' and column_key='UNI';      -- 查表的描述    select  TABLE_COMMENT  from information_schema.TABLES where  table_schema='geovindu' and table_name=('orderdetails');     select a.column_name as 'FieldName',a.data_type as 'FieldType',ifnull(a.character_maximum_length,8) as 'FieldLength',a.COLUMN_COMMENT,b.TABLE_COMMENT from information_schema.columns as a,information_schema.TABLES as b  where a.table_schema='geovindu' and b.table_schema='geovindu' and a.TABLE_NAME=b.TABLE_NAME  and a.table_name=('enterprisetype');      -- MySQL5.7 2018-09-28 -- Geovin Du 涂聚文 edit   #查询函数，存储过程 SELECT * FROM mysql.proc WHERE db='geovindu';   SELECT * FROM information_schema.routines WHERE routine_schema='geovindu';   SHOW PROCEDURE STATUS WHERE db='geovindu';   #查看存储过程详细信息 SHOW CREATE PROCEDURE geovindu.DeleteBookKind;      -- 存储过程，自定义函数 SELECT * FROM information_schema.PARAMETERS where Specific_schema='geovindu'; -- 'PROCEDURE' SELECT * FROM information_schema.PARAMETERS where Specific_schema='geovindu' and routine_type='PROCEDURE'; select * from information_schema.ROUTINES where  ROUTINE_SCHEMA='geovindu' and routine_type='PROCEDURE';   --  'FUNCTION' SELECT * FROM information_schema.PARAMETERS where Specific_schema='geovindu'  and routine_type='FUNCTION'; select * from information_schema.ROUTINES where  ROUTINE_SCHEMA='geovindu' and routine_type='FUNCTION';       DROP PROCEDURE IF EXISTS `sp_splitpage`;   -- ok  DELIMITER $$ CREATE PROCEDURE `sp_splitpage`(  in _pagecurrent int,/*当前页*/  in _pagesize int,/*每页的记录数*/  in _ifelse varchar(1000),/*显示字段*/  in _where varchar(1000),/*条件*/  in _order varchar(1000) /*排序*/ ) COMMENT '分页存储过程' BEGIN declare strsql varchar(1000);  if _pagesize<=1 then   set _pagesize=20; end if;  if _pagecurrent < 1 then   set _pagecurrent = 1; end if;  set @strsql = concat('select ',_ifelse,' from ',_where,' ',_order,' limit ',_pagecurrent*_pagesize-_pagesize,',',_pagesize);  prepare stmtsql from @strsql;  execute stmtsql;  deallocate prepare stmtsql;  set @strsqlcount=concat('select count(1) as count from ',_where);/*count(1) 这个字段最好是主键*/  prepare stmtsqlcount from @strsqlcount;  execute stmtsqlcount;  deallocate prepare stmtsqlcount; END$$ DELIMITER ;       /* --名称：MYSQL版查询分页存储过程 by peace 2013-8-14 --输入参数：@fields        -- 要查询的字段用逗号隔开 --输入参数：@tables        -- 要查询的表 --输入参数：@where        -- 查询条件 --输入参数：@orderby    -- 排序字段 --输出参数：@page        -- 当前页计数从1开始 --输出参数：@pagesize    -- 每页大小 --输出参数：@totalcount -- 总记录数 --输出参数：@pagecount  -- 总页数 */ -- ok DROP PROCEDURE IF EXISTS `Query_Pagination`;    DELIMITER $$ CREATE PROCEDURE Query_Pagination (     in _fields varchar(2000),       in _tables text,     in _where varchar(2000),      in _orderby varchar(200),     in _pageindex int,     in _pagesize int,     in _sumfields  varchar(200),/*增加统计字段2013-5-8 peaceli*/     out _totalcount int ,     out _pagecount int )COMMENT '分页存储过程' begin declare startRow int; declare pageSize int; declare rowindex int; declare strsql varchar(1000);      set startRow = _pagesize*(_pageindex-1);    set pageSize = _pagesize;     set rowindex = 0;      set strsql = CONCAT('select sql_calc_found_rows @rowindex:=@rowindex+1 as rownumber,',_fields,' from ',_tables,case ifnull(_where,'') when '' then '' else concat(' where ',_where) end,' order by ',_orderby,' limit ',@startRow,',',@pageSize);      prepare strsql from @strsql;      execute strsql;    deallocate prepare strsql;    set _totalcount = found_rows();      if(_totalcount <= _pagesize) then         set _pagecount = 1;    else if(_totalcount % _pagesize > 0) then         set _pagecount = _totalcount / _pagesize + 1;    else         set _pagecount = _totalcount / _pagesize;    end if;   if(ifnull(_sumfields,'') <> '') then set @sumsql = contact('select ',_sumfields,' from ',_tables,case ifnull(_where,'') when '' then '' else concat(' where ',_where) end); prepare sumsql from @sumsql; execute sumsql; deallocate prepare sumsql; end if; end if; end$$ DELIMITER ;              /*test" CALL sp_viewPage( '*'#查询字段 ,'userupdatelog'#表名 ,'1=1'#条件 ,'Id desc'#排序 ,1 #页码 ,20 #每页记录数 ,@totalcount #输出总记录数 ,@pagecount #输出用页数 ); SELECT @totalcount,@pagecount; */ DROP PROCEDURE IF EXISTS `sp_viewPage`; -- OK  DELIMITER $$ CREATE PROCEDURE sp_viewPage( _fields VARCHAR(1000), #要查询的字段，用逗号(,)分隔 _tables TEXT, #要查询的表 _where VARCHAR(2000), #查询条件 _orderby VARCHAR(200), #排序规则 _pageindex INT, #查询页码 _pageSize INT, #每页记录数 /*_sumfields VARCHAR(200),#求和字段 */ #输出参数 OUT _totalcount INT, #总记录数 OUT _pagecount INT #总页数 /* OUT _sumResult VARCHAR(2000)#求和结果 */ )COMMENT '分页存储过程' BEGIN #140529-xxj-分页存储过程 #计算起始行号 declare strsql varchar(1000); declare startRow int; declare pageSize int; declare rowindex int; SET startRow = _pageSize * (_pageindex - 1); SET pageSize = _pageSize; SET rowindex = 0; #行号   #合并字符串 SET @strsql = CONCAT( #'select sql_calc_found_rows @rowindex:=@rowindex+1 as rownumber,' #记录行号 'select sql_calc_found_rows ' ,_fields ,' from ' ,_tables ,CASE IFNULL(_where, '') WHEN '' THEN '' ELSE CONCAT(' where ', _where) END ,CASE IFNULL(_orderby, '') WHEN '' THEN '' ELSE CONCAT(' order by ', _orderby) END ,' limit ' ,startRow ,',' ,pageSize );   PREPARE strsql FROM @strsql;#定义预处理语句 EXECUTE strsql; #执行预处理语句 DEALLOCATE PREPARE strsql; #删除定义 #通过 sql_calc_found_rows 记录没有使用 limit 语句的记录，使用 found_rows() 获取行数 SET _totalcount = FOUND_ROWS(); #计算总页数 IF (_totalcount <= _pageSize) THEN     SET _pagecount = 1; ELSE IF (_totalcount % _pageSize > 0) THEN     SET _pagecount = _totalcount DIV _pageSize + 1; ELSE SET _pagecount = _totalcount DIV _pageSize; END IF; end if;   END$$ DELIMITER ;   -- Ok DROP PROCEDURE IF EXISTS `GetRecordAsPage`;   DELIMITER $$ CREATE PROCEDURE `GetRecordAsPage` (in tbName varchar(800),  -- 表名 in fldName varchar(1000), -- 表的列名 in strWhere varchar(500),  -- 查询条件 in pageIndex int, -- 第几页 传入1就是显示第一页 in pageSize int,  -- 一页显示几条记录 in orderType int, -- 0是升序 非0是降序 in sortName varchar(50) -- 排序字段 ) COMMENT '分页存储过程' BEGIN declare startRow int; declare sqlStr varchar(1000); declare limitTemp varchar(1000); declare orderTemp varchar(1000); set startRow = (pageIndex-1)*pageSize; set sqlStr = CONCAT('SELECT ',fldName,' from ',tbName); set limitTemp = CONCAT(' limit ',startRow,',',pageSize); set orderTemp = CONCAT(' order by ',sortName); if orderType = 0 then set orderTemp = CONCAT(orderTemp,' ASC '); else set orderTemp = CONCAT(orderTemp,' DESC '); end if; set @sqlString = CONCAT(sqlStr,' ',strWhere,orderTemp,limitTemp); prepare sqlstmt from @sqlString; execute sqlstmt; deallocate prepare sqlstmt; END$$ DELIMITER ;   -- DELIMITER $$ DROP PROCEDURE IF EXISTS `GetRecordCount` $$ -- --CREATE DEFINER=`root`@`localhost` PROCEDURE `GetRecordCount`(in tbName varchar(800),in strWhere varchar(500)) CREATE  PROCEDURE `GetRecordCount` ( in tbName varchar(800), in strWhere varchar(500) )COMMENT '获取条件下的总记录数据 存储过程' BEGIN set @strSQL=concat('select count(*) as countStr from ',tbName,strWhere); prepare sqlstmt from @strSQL; execute sqlstmt; deallocate prepare sqlstmt; END $$ DELIMITER ;   -- OK DELIMITER $$ CREATE DEFINER=`root`@`localhost` PROCEDURE `LazyLoadScope` ( IN ClientId    INT, IN StartIndex INT, IN Count INT )COMMENT '分页存储过程' BEGIN DECLARE LowerBound INT; DECLARE UpperBound INT; DECLARE rownum INT; SET LowerBound = ((StartIndex - 1) * Count) + 1; SET UpperBound = ((StartIndex - 1) * Count) + Count;   SELECT scopeid,scopename,clientid,scope,createddate,ViewDate,IsLocked   from (SELECT *, @rownum := @rownum + 1 AS rank   from (SELECT   sm.scopeid,sm.scopename,sm.clientid,sm.scope,sm.createddate,sm.ViewDate,sm.Is     Locked FROM scopemaster as sm inner join clientmaster cm on cm.clientid=sm.clientid where cm.userid=ClientId order by sm.ViewDate desc) d, (SELECT @rownum  := 0) r ) m WHERE rank >= LowerBound and rank <= UpperBound;   END$$ DELIMITER ;         DELIMITER $$ CREATE DEFINER=`root`@`localhost` PROCEDURE `GetCustomers_Pager`(    _PageIndex INT    ,_PageSize INT    ,OUT _RecordCount INT )COMMENT '分页存储过程' BEGIN        SET @RowNumber:=0;           CREATE TEMPORARY TABLE Results        SELECT @RowNumber:=@RowNumber+1 RowNumber               ,CustomerID               ,ContactName               ,CompanyName        FROM Customers;           SET _RecordCount =(SELECT COUNT(*) FROM Results);           SELECT * FROM Results        WHERE RowNumber BETWEEN(_PageIndex -1) * _PageSize + 1 AND(((_PageIndex -1) * _PageSize + 1) + _PageSize) - 1;           DROP TEMPORARY TABLE Results; END$$ DELIMITER ;   -- OK  DELIMITER $$ CREATE DEFINER=`root`@`localhost` PROCEDURE ProcPage( in tableName varchar(20), #表名 in showField varchar(100), #要显示的列名 in whereText varchar(500), #where条件(只需要写where后面的语句) in orderText varchar(500), #排序条件（只需要写order by后面的语句） in pageSize int, #每一页显示的记录数 in pageIndex int, #当前页 out dataCount int  #总记录数 )COMMENT '分页存储过程' BEGIN DECLARE f INT unsigned DEFAULT 0;  set f=1; if _pagesize<=100 then   set f=200; end if; if(pageSzie<1) then  set pagesize=20; end if; if(pageIdex<1) then   set pageIndex=1; end if; if(length(whereText)>0) then  set whereText=concat(' where 1=1 ',whereText); end if; if(LENGTH(orderText)>0)then     set orderText = CONCAT(' ORDER BY ',orderText); end if;  /* if (pageSize<1) then set pageSize=20; end if; if (pageIndex < 1)then   set pageIndex = 1; end if; if(LENGTH(whereText)>0)then     set whereText=CONCAT(' where 1=1 ',whereText); end if; */ set @strsql = CONCAT('select ',showField,' from ',tableName,' ',whereText,' ',orderText,' limit ',pageIndex*pageSize-pageSize,',',pageSize); prepare stmtsql from @strsql; execute stmtsql; deallocate prepare stmtsql; set @strsqlcount=concat('select count(1) as count into @datacount from ',tableName,'',whereText); prepare stmtsqlcount from @strsqlcount; execute stmtsqlcount; deallocate prepare stmtsqlcount; set datacount=@datacount; END$$ DELIMITER ;