android-如何将ExecuteScalar移植到Java？

SqlCommand.ExecuteScalar Method
Executes the query, and returns
the first column of the first row in the result set returned by the
query. Additional columns or rows are ignored.

我想这将涉及大量使用泛型.

假设我有一个SQLiteDatabase/Cursor对象.

解决方法:

看看SQLLiteStatement

long simpleQueryForLong() Execute a statement that returns a 1 by 1
table with a numeric value.

String simpleQueryForString() Execute a statement that returns a 1 by 1 table with a text value.

标签：sqlite,sql-server-express,java,c,android
来源： https://codeday.me/bug/20191102/1989830.html