What the main contents of KuaJingGou?
A: Real name authentication
B: Order query
C: Security traceability with QR code query
D: Fast logistics
A: Real name authentication
B: Order query
C: Security traceability with QR code query
D: Fast logistics
举一反三
- In SQL query, order by clause is used to achieve grouping.
- In Access2016, the data source of the query can be (). A: Table B: Query C: Table, query and report D: Table and query
- The following () does not belong to the operation query. A: Parameter query B: Generate table query C: Update query D: Delete query
- 使用SQLiteDatabase对象db，从user表中查找name为tom的记录，使用的语句为： A: db. query("user",null,"name=?",new String[]{"tom"},null,null,null) B: db. query("user",null,"name",new String[]{"tom"},null,null,null) C: db. query("user",null,"name=?",new String[]{tom},null,null,null) D: db. query("user",null,"name=tom",null,null,null,null)
- If there is already a table with the same name existed in the database, to overwrite the original table by query, the query type that should be used is (). A: Delete B: Append C: Generate table D: Update