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我的 postgres 函数有问题。我创建了一个将数据从 db 复制到 csv 的函数。

我尝试在工作台上运行该函数并且没有错误，但是当我运行测试时出现美元报价错误。

这是功能：

--------- the @DELIMITER / is necessary in order to sent sql statement 
with mybatis...
-- @DELIMITER /
/
CREATE OR REPLACE FUNCTION save_audit_deletions(IN days numeric, IN table_name text) 
RETURNS void AS
$body$
DECLARE
   interval INT;
   statement_copy text;
   statement_count text;
   copied_rows INTEGER; --number of rows copied by COPY
   backup_rows INTEGER; --number of rows that COPY needs to copy into csv
BEGIN

    UPDATE table_name SET backup = 1 WHERE backup = 0 AND creationdate >= now()::DATE - days AND creationdate < now()::DATE;

    statement_copy := 'COPY (SELECT * FROM table_name WHERE backup = 1) TO ''/var/audiobays/logs/audit/' || table_name || '_deletions_(' || date-days|| ').csv'' CSV DELIMITER '','' HEADER;';
    execute statement_copy 
    into copied_rows;

    statement_count := 'SELECT COUNT (*) FROM table_name WHERE backup = 1';
    execute statement_count 
    into backup_rows;

    IF copied_rows = backup_rows THEN
        DELETE FROM table_name WHERE backup = 1;
    ELSE
        UPDATE table_name SET backup = 0 WHERE backup = 1;
    END IF;
END
$body$
LANGUAGE plpgsql;
/
-- @DELIMITER ;

这就是错误。

Error executing: CREATE OR REPLACE FUNCTION save_audit_deletions(IN days numeric, IN table_name text) 
RETURNS void AS
$body$
DECLARE
   interval INT;
   statement_copy text;
   statement_count text;
   copied_rows INTEGER; --number of rows copied by COPY
   backup_rows INTEGER; --number of rows that COPY needs to copy into csv
BEGIN
    UPDATE table_name SET backup = 1 WHERE backup = 0 AND creationdate >= now()::DATE - days AND creationdate < now()::DATE;
   statement_copy := 'COPY (SELECT * FROM table_name WHERE backup = 1) TO ''/var/audiobays/logs/audit
.  Cause: org.postgresql.util.PSQLException: Unterminated dollar quote started at position 104 in SQL CREATE OR REPLACE FUNCTION 


. Expected terminating $$
Error executing:   execute statement_copy 


.  Cause: org.postgresql.util.PSQLException: Unterminated dollar quote started at position 328 in SQL   execute statement_copy 

. Expected terminating $$
4

1 回答 1

1

无论是什么解释@DELIMITER /，它都可能会被/var/audiobays/logs/audit/哪个包含斜杠弄糊涂。

尝试使用没有出现在函数体中的`分隔符。

于 2019-08-26T13:22:02.073 回答