1. Analyze and simulate the following code lists (code1 and code 2) with the same input signals shown below by presenting POW and OL. If the data type of “a, b, c, d, u, v, w, x, y, z” is declared as std_logic, what changes the simulation outputs wil

hive函数大全 一、关系运算： 4 1. 等值比较: = 4 2. 不等值比较: <> 4 3. 小于比较: < 4 4. 小于等于比较: <= 4 5. 大于比较: > 5 6. 大于等于比较: >= 5 7. 空值判断: IS NULL 5 8. 非空判断: IS NOT NULL 6 9. LIKE比较: LIKE 6 10. JAVA的LIKE操作: RLIKE 6 11. REGEXP操作: REGEXP 7 二、数学运算