我试着基于这个创建函数CREATE OR REPLACE FUNCTION week_num_year(_date date) return ceil((to_char(_date,'DDD')::integer+(to_char(('01-01-'||_year)::date,'D')::integer%7-
下面的代码演示了:stcrcl al,1 ; rotate left one bit through carry flag (multiplydestination operand is shifted into the CF flag, and the least significant bit is cleared (see
Figure 7-