hstore值与空间

Question

我正在使用Postgresql V 9.1：

SELECT 'k=>name, v=>Nava Ratna Secondary School'::hstore;

此代码返回错误：

ERROR:  Syntax error near 'R' at position 17
LINE 1: SELECT 'k=>name, v=>Nava Ratna Secondary School'::hstore;
               ^

********** Error **********

ERROR: Syntax error near 'R' at position 17
SQL state: XX000
Character: 8

将'Nava Ratna Secondary School'中的空间填充为'Nava_Ratna_Secondary_School'或将其删除'NavaRatnaSecondarySchool'作品。

但我需要存放v = Nava Ratna中学的空格。怎么做？

Answer 1

SELECT 'k=>name, v=>"Nava Ratna Secondary School"'::hstore;

当值或键中有单引号时，最简单的方法是使用美元引用：

SELECT $$k=>"name", v=>"St. Xavier's Academy"$$::hstore;

或更广泛的逃避：

SELECT 'k=>"name", v=>"St. Xavier''s Academy"'::hstore;