Implementation of single conditional paging by SQL Server stored procedure

Time:2019-8-23

Not much to say, please see the code:


SQLServer Procedure Pagination_basic:
ALTER PROCEDURE [qiancheng].[Pagination_basic] (
@Table_name VARCHAR (255),
--name of table
@Rows_target VARCHAR (1000) = '*',
--search rows 
@Rows_condition VARCHAR (1000) = '',
--the condition to find target (no where)
@Rows_order VARCHAR (255) = '',
--the rows to rank
@Order_type INT = 0,
-- *Q*C* 0 normal 1 down
@PageSizes INT = 10,
--the size of each page
@PageIndex INT = 1,
--current page
@ShowPages INT,
--whether show the pages *Q*C* 1-yes 0-no
@ShowRecords INT,
--whether show the record *Q*C* 1-yes 0-no
@Records_total INT OUTPUT,
--returned total records
@Pages_total INT OUTPUT --returned total pages
) AS
DECLARE @MainSQL_QC nvarchar (2000) --Main SQL sentence
DECLARE @Var_QC VARCHAR (100) --Temporary variate
DECLARE @Order_QC VARCHAR (400) --the sort to rank
SET @Records_total = 0
SET @Pages_total = 0
IF @ShowRecords = 1
OR @ShowPages = 1
BEGIN
IF @Rows_condition != ''
SET @MainSQL_QC = 'select @Records_total = count(1) from [' + @Table_name + '] where ' [email protected]_condition
ELSE
SET @MainSQL_QC = 'select @Records_total = count(1) from [' + @Table_name + ']' EXEC sp_executesql @MainSQL_QC,
 N'@Records_total int out' ,@Records_total OUTPUT
END
IF @ShowPages = 1
BEGIN
IF @Records_total <= @PageSizes
SET @Pages_total = 1
ELSE
BEGIN
SET @Pages_total = @Records_total /@PageSizes
IF (@Records_total %@PageSizes) > 0
SET @Pages_total = @Pages_total + 1
END
END
IF @Order_type = 1
BEGIN
SET @Var_QC = '<(select min'
SET @Order_QC = ' order by [' + @Rows_order + '] desc'
END
ELSE
BEGIN
SET @Var_QC = '>(select max'
SET @Order_QC = ' order by [' + @Rows_order + '] asc'
END
IF @PageIndex = 1
BEGIN
IF @Rows_condition != ''
SET @MainSQL_QC = 'select top ' + str(@PageSizes) + ' ' [email protected]_target + ' from [' + @Table_name + '] where ' + @Rows_condition + ' ' + @Order_QC
ELSE
SET @MainSQL_QC = 'select top ' + str(@PageSizes) + ' ' [email protected]_target + ' from [' + @Table_name + '] ' + @Order_QC
END
ELSE
BEGIN
IF @Rows_condition != ''
SET @MainSQL_QC = 'select top ' + str(@PageSizes) + ' ' [email protected]_target + ' from [' + @Table_name + '] where [' + @Rows_order + ']' + @Var_QC + '([' + @Rows_order + ']) from (select top ' + str((@PageIndex - 1) *@PageSizes) + ' [' + @Rows_order + '] from [' + @Table_name + '] where ' + @Rows_condition + ' ' + @Order_QC + ') as Tmep_QC) and ' + @Rows_condition + ' ' + @Order_QC
ELSE
SET @MainSQL_QC = 'select top ' + str(@PageSizes) + ' ' [email protected]_target + ' from [' + @Table_name + '] where [' + @Rows_order + ']' + @Var_QC + '([' + @Rows_order + ']) from (select top ' + str((@PageIndex - 1) *@PageSizes) + ' [' + @Rows_order + '] from [' + @Table_name + ']' + @Order_QC + ') as Tmep_QC)' + @Order_QC
END EXEC (@MainSQL_QC)

Call: execute pagination_basic’User Detail’,’*’,”,’id’,’1′,’5′,’1′,’1′,’1′,’1′,””,”’,”

It is mainly the sentence at the end of the sentence.

Select top from [table name] where [sort field name] < – 1 Reverse output if column is less than the minimum number of previous pages

(select min ([sort field name]) from — 2 to get the minimum value in a specified column name and output it

(select top (current page-1) * number of pages per page [sort field name] from [table name] where [condition] [sort type]) — 3. Reverse output of total page data before selection

As Tmep_QC) — 4 Establishes a temporary table called Tmep_QC — 2 obtains a minimum value in the specified column name and outputs it

And [condition] [sort type] — 1 Inverse output if column is less than the minimum of previous pages

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