postgresql dual
Another question that pops up from time to time is how you can do things in PostgreSQL that would require the dual table in Oracle. Lets go …, Don't create dual tables. Why are you using a dual table in PostgreSQL to begin with? PostgreSQL has an implicit dual table if there is no ..., You don't need a FROM clause at all. Just SELECT 1 will do it., Oracle uses the "fake" dual table for many selects, where in PostgreSQL we can write select just without from part at all. This table was created ..., Oracle uses the table DUAL for selects where actually no table name would be necessary, since the FROM clause in Oracle is mandatory.,跳到 兼容性设置->虚表dual问题 - Postgresql中没有dual 虚拟表，为保证兼容性，需创建伪 ... alter table dual owner to postgres; grant all on table dual to ... , 在我的理解中，dual是Oracle中为了保证每个select语句都有from而设置的一个虚拟表，而没有其他任何意义。在PostgreSQL中(SQL Server也是 ..., PostgreSQL中不需要dual虚拟表。在我的理解中，dual是Oracle中为了保证每个select语句都有from而设置的一个虚拟表，而没有其他任何意义。, PostgreSQL中不需要dual虚拟表。在我的理解中，dual是Oracle中为了保证每个select语句都有from而设置的一个虚拟表，而没有其他任何意义。, Verwendung von "select from DUAL" in Postgres vs. Oracle. Gemeinsamkeiten und Unterschiede.
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 postgresql dual 相關參考資料
Can I do it with PostgreSQL? - 2 - Dual - Blog dbi services
Another question that pops up from time to time is how you can do things in PostgreSQL that would require the dual table in Oracle. Lets go … https://blog.dbi-services.com dual table postgres doesn't return timestamp - Database ...
Don't create dual tables. Why are you using a dual table in PostgreSQL to begin with? PostgreSQL has an implicit dual table if there is no ... https://dba.stackexchange.com equivalence of from dual in postgreSQL - Stack Overflow
You don't need a FROM clause at all. Just SELECT 1 will do it. https://stackoverflow.com hibernate - equivalence of from dual in postgreSQL - Stack ...
Oracle uses the "fake" dual table for many selects, where in PostgreSQL we can write select just without from part at all. This table was created ... https://stackoverflow.com Oracle to Postgres Conversion - PostgreSQL wiki
Oracle uses the table DUAL for selects where actually no table name would be necessary, since the FROM clause in Oracle is mandatory. https://wiki.postgresql.org PostgreSQL与Oracle的差异对比_TechRunner-CSDN博客
跳到 兼容性设置->虚表dual问题 - Postgresql中没有dual 虚拟表，为保证兼容性，需创建伪 ... alter table dual owner to postgres; grant all on table dual to ... https://blog.csdn.net postgresql中有虚表么？如oracle中的dual-CSDN论坛
在我的理解中，dual是Oracle中为了保证每个select语句都有from而设置的一个虚拟表，而没有其他任何意义。在PostgreSQL中(SQL Server也是 ... https://bbs.csdn.net postgresql中没有dual表解决方案_wangxifeng920的专栏 ...
PostgreSQL中不需要dual虚拟表。在我的理解中，dual是Oracle中为了保证每个select语句都有from而设置的一个虚拟表，而没有其他任何意义。 https://blog.csdn.net postgresql里面有dual - CSDN博客
PostgreSQL中不需要dual虚拟表。在我的理解中，dual是Oracle中为了保证每个select语句都有from而设置的一个虚拟表，而没有其他任何意义。 https://blog.csdn.net Select * from DUAL in Postgres - www.dbconcepts.at
Verwendung von "select from DUAL" in Postgres vs. Oracle. Gemeinsamkeiten und Unterschiede. https://www.dbconcepts.at |