[英]Need the output in specific format in psql
假設:-
subh=# select 'test123';
?column?
-------------------------------------
test123
和
subh=# select obj_description('test123'::regclass);
obj_description
--------------------
this is my table
我正在運行此查詢:
subh=# select 'test123' || ' ' || obj_description('test123'::regclass) as test;
test
-------------------------------
test123 this is my table
實際上我希望輸出如下:-
test
-------------------------------
test123 'this is my table'
使用quote_literal
此函數在給定的字符串/數字的前面和后面添加單引號。 在這里閱讀。
subh=# select 'test123' || ' ' || quote_literal(obj_description('test123'::regclass)) as test;
subh=# select 'test123' || ' \'' || obj_description('test123'::regclass) as test || '\'';
test
-------------------------------
test123 'this is my table'
\\'
將用於添加報價
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