Determining whether there is a table PostgreSQL

postgresql determines whether a table exists:

method one:

select count(*) from pg_class where relname = 'tablename';

 

Method Two:

COUNT SELECT (*) = TABLE_SCHEMA from information_schema.tables WHERE 'public' and TABLE_TYPE = 'TABLE BASE' and table_name = 'TableName';
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author: wolf maple
source: CSDN
original: https: //blog.csdn.net/leixiaorong/article/details/7735883
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