meaning of symbol in sql query

 If you want to query Index Server through SQL Server, you must use the OPENQUERY function. The syntax structure is as follows. OPENQUERY (pai_server, 'query ') The linked_server parameter indicates the connection name. The query parameter is the

Query records that meet the conditions in the table-WHERE clause bitsCN.com Query records that meet the conditions in the table-WHERE Clause When using SQL statements for query operations, developers or users are not interested in all the records

7. use the WHERE clause to query records that meet the conditions in the table bitsCN.com When using SQL statements for query operations, developers or users are not interested in all the records in the data table, but want to get the actual data

When using SQL statements for query operations, developers or users are not interested in all the records in the data table, but want to get the actual data records, in this case, you need to restrict the query results. In SQL statements, you can

sql| Beginners | statement There are so many different SQL products that you may have to do before you throw away your sleeves. But you can get dizzy if you want to use both ASP and SQL at the same time. MySQL, SQL Server, and msql are excellent SQL

1. SELECT statement In the world of SQL, the most basic operation is the SELECT statement. When using SQL directly using database tools, many people will be familiar with the following operations:　　 Copy codeThe Code is as follows: SELECT what FROM

The PHP parser uses a pair of quotes to judge a string. Therefore, all strings must use the same single or double quotation marks to define the start and end. For example, the following string definition is illegal: 1 The difference between single

1) Subquery concept: When a query is a sub-part of another query, it is called a subquery (query statements are nested in query statements). The sub-queries appear in the following locations: A) Destination column location:

1,select StatementIn the SQL world, the most fundamental operation is the SELECT statement. Many people will be familiar with the following when using SQL directly under Database Tools:　　 Copy Code code as follows: SELECT What from

Query records that meet the conditions in a table-when the WHERE clause uses SQL statements for query operations, developers or users are not interested in all the records in the data table, however, if you want to obtain the data records you