-- 兩者都兼容的基本查詢
SELECT column1, column2 FROM table WHERE condition;
-- 插入語(yǔ)句
INSERT INTO table (column1, column2) VALUES (value1, value2);
-- 更新語(yǔ)句
UPDATE table SET column1 = value1 WHERE condition;
-- 刪除語(yǔ)句
DELETE FROM table WHERE condition;

<%
' 假設(shè)你已經(jīng)建立了數(shù)據(jù)庫(kù)連接 conn
dbType = "pgsql" ' 或 "sqlserver" - 需要根據(jù)實(shí)際連接設(shè)置
If dbType = "pgsql" Then
    sql = "PostgreSQL專用語(yǔ)法"
Else
    sql = "SQL Server專用語(yǔ)法"
End If
%>

<%
If dbType = "pgsql" Then
    sql = "SELECT * FROM table ORDER BY id LIMIT " & pageSize & " OFFSET " & (pageNumber-1)*pageSize
Else
    sql = "SELECT * FROM table ORDER BY id OFFSET " & (pageNumber-1)*pageSize & " ROWS FETCH NEXT " & pageSize & " ROWS ONLY"
End If
%>

<%
If dbType = "pgsql" Then
    sql = "SELECT first_name || ' ' || last_name AS full_name FROM users"
Else
    sql = "SELECT first_name + ' ' + last_name AS full_name FROM users"
End If
%>

<%
If dbType = "pgsql" Then
    sql = "SELECT * FROM logs WHERE created_at > NOW() - INTERVAL '1 day'"
Else
    sql = "SELECT * FROM logs WHERE created_at > DATEADD(day, -1, GETDATE())"
End If
%>

<%
If dbType = "pgsql" Then
    sql = "CREATE TABLE users (id SERIAL PRIMARY KEY, name VARCHAR(100))"
Else
    sql = "CREATE TABLE users (id INT IDENTITY(1,1) PRIMARY KEY, name VARCHAR(100))"
End If
%>

<%
If dbType = "pgsql" Then
    sql = "UPDATE users SET active = TRUE WHERE id = 1"
Else
    sql = "UPDATE users SET active = 1 WHERE id = 1"
End If
%>