1.使用DEFAULT_WHERE: DECLARE V_DEFAULT_WHERE VARCHAR2(32767); V_WHERE VARCHAR2(32767); BEGIN --获取系统默认的查询条件 V_DEFAULT_WHERE := GET_BLOCK_PROPERTY(:SYSTEM.CURSOR_BLOCK, DEFAULT_WHERE); --根据查询条件是否有WHERE拼接SQL IF V_DEFAULT_WHERE IS NULL THE
用sc命令查询系统状态 sc query 语法 sc query - Enumerates status for active services & drivers sc query messenger - Displays status for the messenger service sc queryex messenger - Displays extended status for the messenger service sc quer
NAME_IN和COPY实际是间接引用,类似指针传递,而不是值传递... IF :VAR1 IS NULL ... direct referenceIF NAME_IN ( :VAR1 ) IS NULL ... indirect reference Referencing items indirectly allows you to write more generic, reusable code. By using variables in place of actual item
If you want to suppress error messages then you have to set a system variable :system.message_level. I use to set this system variable in a Pre-Form trigger. There is no restriction in using this variable. You can set it to difference values in each
commit_form:将form上的数据写入数据库,并且会在database提交,即 直接查询表是能够查到结果,在form左下角会得到“FRM-40400:Transaction complete:4 records applied an saved” post:将form上的数据写入数据库,但是并不在database提交,即 直接查询表是查不到该记录的,在form左下角会得到"FRM-40404:Database apply complete: 4 records applied"