2 Overview of PL/SQL 3 PL/SQL Language Fundamentals 4 PL/SQL Data Types 5 PL/SQL Control Statements 6 PL/SQL Collections and Records 7 PL/SQL Static SQL 8 PL/SQL Dynamic SQL 9 PL/SQL Subprograms 10 PL/SQL Triggers 11 PL/SQL Packages 12 PL/SQL Error Handling 13 PL/SQL Optimization...
不能对 BEFORE 触发器或 INSTEAD OF 触发器指定语句级触发器粒度。 会在触发语句影响每一行之前或之后执行触发器代码块(除执行触发器代码块而不根据激活语句影响每一行的 INSTEAD OF 触发器外)。父主题: 触发器 (PL/SQL) 相关参考CREATE TRIGGER 语句 (PL/SQL) ...
DBMS_SQL DESC_REC4 Record Type(new) DBMS_SQL DESC_TAB4 Table Type(new) Enhancements to theDBMS_SQLDIAGpackage: SeeCREATE_SQL_PATCH Function Enhancements to theDBMS_SQLPApackage: SeeSET_ANALYSIS_TASK_PARAMETER Procedures(new parameters:EXECUTE_TRIGGERS,NUM_ROWS_TO_FETCH, andREPLACE_SYSDATE_WITH)...
ただし INSTEAD OF トリガーは例外で、そのトリガーを起動するステートメントの対象である各行に影響を与える代わりにトリガーのコード・ブロックが実行されます。親トピック: トリガー (PL/SQL) 関連参照 CREATE TRIGGER ステートメント (PL/SQL) ...
四、触发器TRIGGERS openGauss中支持触发器,但需要注意的是,openGauss中的触发器语法与Oracle差异较大,需要进行重写。 postgres=# create or replace trigger modify_stu before insert on student for each row declare next_id number; begin select seq_test.nextval into next_id from dual; ...
Multi-byte character data: The source and target databases must be logically identical in terms of schema definition for the tables and sequences being replicated. Transformation, filtering, and other manipulation cannot be used. The character sets between the two databases must be on...
데이터 서버는 PL/SQL 컨텍스트 내에서 행 레벨 및 명령문 레벨 트리거를 지원합니다. 행 레벨 트리거는 트리거링 이벤트의 영향을 받는 행마다 한 번씩 실행됩니다. 예를 들어, ...
PL/SQL predefines these subtypes: SIMPLE_FLOAT, a subtype of SQL data typeBINARY_FLOAT SIMPLE_DOUBLE, a subtype of SQL data typeBINARY_DOUBLE Each subtype has the same range as its base type and has aNOTNULLconstraint (explained in"NOT NULL Constraint"). ...
不能对 BEFORE 触发器或 INSTEAD OF 触发器指定语句级触发器粒度。 会在触发语句影响每一行之前或之后执行触发器代码块(除执行触发器代码块而不根据激活语句影响每一行的 INSTEAD OF 触发器外)。父主题: 触发器 (PL/SQL)
不能对 BEFORE 触发器或 INSTEAD OF 触发器指定语句级触发器粒度。 会在触发语句影响每一行之前或之后执行触发器代码块(除执行触发器代码块而不根据激活语句影响每一行的 INSTEAD OF 触发器外)。父主题: 触发器 (PL/SQL)