SQLITE 运算符 技术教程文章

《SQLite3 — 运算符》【代码】【图】

1.1算术运算符算术运算符也就是"+"、"-"、"*"、"/"、"%"。 实例:sqlite> .mode line sqlite> select 10 + 20; 10 + 20 = 30sqlite> select 10 - 20; 10 - 20 = -10sqlite> select 10 * 20; 10 * 20 = 200sqlite> select 10 / 5; 10 / 5 = 2sqlite> select 12 % 5; 12 % 5 = 21.2比较运算符 实例: 假设 COMPANY 表有以下记录:ID NAME AGE ADDRESS SALARY ---------- ---------- ---------- ...

mysql – SQLite中的null-safe相等运算符<=>的等价物是什么?

我需要确定MySQL中 operator' rel='nofollow' target='_blank'> operator的SQLite的等价物. 任何的想法?解决方法:The IS and IS NOT operators work like = and != except when one or bothof the operands are NULL. In this case, if both operands are NULL,then the IS operator evaluates to 1 (true) and the IS NOT operatorevaluates to 0 (false)http://www.sqlite.org/lang_expr.html#isisnot