Commonly used SQL statements in ASP applications

We often use database operations in ASP for your reference.
「 There are flaws in the rush of time. Thank you for your correction .』

1. Common SQL commands:

(1) Data Record Filtering:
SQL = "select * from data table where field name = Field Value Order by field name"
SQL = "select * from data table where field name like '% Field Value %' order by field name"
SQL = "select top 10 * from data table where field name order by field name"
SQL = "select * from data table where field name in ('value 1', 'value 2', 'value 3 ')"
SQL = "select * from data table where field name between value 1 and value 2"
(2) update data records:
SQL = "update data table set field name = field value where condition expression"
SQL = "update data table set field 1 = value 1, Field 2 = value 2 ...... Field n = value n where condition expression"
(3) Delete data records:
SQL = "delete from data table where condition expression"
SQL = "delete from data table" (delete all data table Records)
(4) add data records:
SQL = "insert into data table (Field 1, Field 2, Field 3 ...) Valuess (value 1, value 2, value 3 ...) "
SQL = "insert into target data table select * from source data table" (add records of source data table to target data table)
(5) statistical functions of data records:
AVG (field name) returns the average value of a table column
Count (* | field name) statistics on the number of data rows or the number of data rows with values in a column
Max (field name) obtains the maximum value of a table column.
Min (field name) obtains the minimum value of a table column.
Sum (field name) adds the values in the data column
The method for referencing the above functions:
SQL = "select sum (field name) as Alias from data table where condition expression"
Set rs = conn. excute (SQL)
Use RS ("alias") to obtain the statistical value. Use the same method for other functions.
(6) Create and delete data tables:
Create Table data table name (whether field 1 is empty, and field 2 is empty ...... )
Drop table data table name (permanently delete a data table)
(7) method of record set object:
Rs. movenext moves the record pointer down a row from the current position
Rs. moveprevious transfers the record pointer from the current position to a row up
Rs. movefirst move the record pointer to the first row of the data table
Rs. movelast moves the record pointer to the last row of the data table
Rs. absoluteposition = n move the record pointer to the nth row of the data table
Rs. absolutepage = n move the record pointer to the first row of page n
Rs. pagesize = N set N records per page
Rs. pagecount the total number of pages returned Based on pagesize settings
Rs. recordcount total number of returned records
Rs. bof indicates whether the record pointer exceeds the first end of the data table. True indicates yes, and false indicates no.
Rs. EOF indicates whether the returned record pointer exceeds the end Of the data table. True indicates yes, and false indicates no.
Rs. Delete deletes the current record, but the record pointer does not move down
Rs. addnew add record to end of data table
Rs. Update update data table records

Determines whether the entered data is a number?
If not isnumeric (Request ("Control name") then
Response. Write "not a number"
Else
Response. Write "Number"
End if

2. database connection method:

1. Access database DSN connection method:
Set adocon = server. Createobject ("ADODB. Connection ")
Adoconn. Open "driver = {Microsoft Access Driver (*. mdb)}; DBQ = "&_
Server. mappath ("database path ")
2. Access ole db connection method:
Set adocon = server. Createobject ("ADODB. Connection ")
Adocon. Open "provider = Microsoft. Jet. oledb.4.0 ;"&_
"Data Source =" & server. mappath ("database path ")
3. SQL server connection method:
Set adocon = server. Createobject ("ADODB. recordset ")
Adocon. Open "driver = {SQL Server}; server = (local); uid = ***; Pwd = ***;"&_
"Database = database name ;"
4. SQL Server OLE DB connection method:
Set adocon = server. Createobject ("ADODB. Connection ")
Adocon. Open "provider = sqloledb; Data Source = servername ;"&_
"Uid = ***; Password = ***;"&_
"Database = database name"