sql - PostgreSQL 到_日期()

Question

我在使用 PostgreSQL to_date() 函数时遇到问题，在我下面提到的代码中出现语法错误，但找不到位置。

SELECT * from crosstab('select upit, sat, count(*) as broj
                                from upiti
                                where datum >= to_date('26-10-2014','DD-MM-YYYY') AND datum <= to_date('29-10-2014','DD-MM-YYYY')
                                group by upit,sat
                                ORDER BY upit,sat',

'select rbrSat from sat order by rbrSat') as ct (upit text, s00 INT, s01 INT, s02 INT, s03 INT, s04 INT, s05 INT, s06 INT, s07 INT, s08 INT, s09 INT, s10 INT, s11 INT, s12 INT, s13 INT, s14 INT, s15 INT, s16 INT, s17 INT, s18 INT, s19 INT, s20 INT, s21 INT, s22 INT, s23 INT);

它说语法错误在“2014”附近。谁知道问题出在哪里？

Answer 1

您正在尝试在单引号字符串中使用未转义的单引号 '。如果您需要在字符串中添加单引号，则需要将其加倍，如 '';

SELECT * from crosstab('select upit, sat, count(*) as broj
                        from upiti
                        where datum >= to_date(''26-10-2014'',''DD-MM-YYYY'') 
                          AND datum <= to_date(''29-10-2014'',''DD-MM-YYYY'')
                            group by upit,sat
                            ORDER BY upit,sat',

...