IF 判断条件 THEN 满足条件时执行语句 END IF; DECLARE v_countResult NUMBER; BEGIN SELECT COUNT(empno) INTO v_countResult FROM emp; IF v_countResult>10 THEN DBMS_OUTPUT.put_line(v_countResult); END if; END; / IF 判断条件 THEN 满足条件时执行语句 ELSE 不满足条件时执行的语句 END IF; DECLARE v…
一.流程控制 1.条件判断 语法: IF <布尔表达式> THEN PL/SQL 和 SQL语句 END IF; IF <布尔表达式> THEN PL/SQL 和 SQL语句 ELSE 其它语句 END IF; IF <布尔表达式> THEN PL/SQL 和 SQL语句 ELSIF < 其它布尔表达式> THEN 其它语句 ELSIF < 其它布尔表达式> THEN 其它语句 ELSE 其它语句 END IF; // 请注意ELSIF而不是EL…
Control Structures of PL/SQL Control structures are probably the most useful (and important) part of PL/pgSQL.With PL/pgSQL's control structures, you can manipulate PostgreSQL data in a very flexible and powerful way. 1.Returning From a Function RETU…
IF条件 declare cursor s is select version from city_server t; s_ city_server.version%type; begin open s; fetch s into s_; if s_>2 then DBMS_OUTPUT.put_line(s_); end if; close s; end; LOOP循环 declare …
tools-->preferences-->user interface-->editor-->AutoReplace AutoReplaceWhen enabled, you can define words that are automatically replaced with a replacement text. Pressing the Edit button allows you to edit the file with words and replacement…