php - 从 postgresql 函数参数中检索 php 数组键和值以进行数据库更新

Question

我正在尝试将一组键值对作为参数发送到 postgresql 函数。数组的结构如下 -

array(10) { 
  ["OWNER"]=> string(3) "ERP" 
  ["SOURCE"]=> string(7) "Unknown" 
  ["PRIORITY"]=> string(6) "Medium" 
  ["PREFLOC"]=> string(5) "Dhaka" 
  ["PROBABLE"]=> string(2) "50" 
  ["MAXSIZE"]=> string(4) "1000" 
  ["MINSIZE"]=> string(4) "2000" 
  ["INTAREA"]=> string(14) "Dhaka, Gulshan" 
  ["CVALPRF"]=> string(5) "Great" 
  ["OPPAMOUNT"]=> string(3) "200" 
}

函数接受这样的字符串数组参数

CREATE OR REPLACE FUNCTION 
document.update_doc_attrib_on_opportunity(p_org_id numeric, p_target_doc_code character varying, 
p_target_doc_no numeric, p_doc_attribs character varying[])

现在我想在我的函数中将数组发送到 p_doc_attribs。就像特定的键名一样，我需要在表中插入所需的值。以下查询需要相应更新 -

'UPDATE use_doc_attribute
        SET attrib_value = CASE WHEN attrib_code = ''PREFLOC''  THEN ''' || p_preferred_location || '''
                    WHEN attrib_code = ''PRIORITY'' THEN ''' || p_priority || '''
                    WHEN attrib_code = ''PROBABLE'' THEN ''' || p_probability || '''
                    WHEN attrib_code = ''SOURCE''   THEN ''' || p_source || '''
                    WHEN attrib_code = ''MAXSIZE''  THEN ''' || p_max_size || '''
                    WHEN attrib_code = ''MINSIZE''  THEN ''' || p_min_size || '''
                    WHEN attrib_code = ''INTAREA''  THEN ''' || p_interested_areas || '''
                    WHEN attrib_code = ''CVALPRF''  THEN ''' || p_client_value_profile || '''
                    ELSE attrib_value
                   END
        WHERE org_id = ' || p_org_id || '
        AND document_no = ' || p_target_doc_no || '
        AND document_code = ''' || p_target_doc_code || '''';

attrib_code 将包含键，特定情况下的 attrib_value 将是从 p_doc_attribs 数组中检索到的值。

Answer 1

我不是这方面的专家，但您可以json_encode 数组并将其传递给您的函数，为此您必须对您的函数进行以下更改:

CREATE OR REPLACE FUNCTION document.update_doc_attrib_on_opportunity(
    p_org_id numeric, 
    p_target_doc_code character varying, 
    p_target_doc_no numeric, 
    p_doc_attribs JSON)

您的查询可能是这样的:

'UPDATE use_doc_attribute
    SET attrib_value = CASE WHEN attrib_code = ''PREFLOC''  THEN ''' || p_doc_attribs['PREFLOC'] || '''
                WHEN attrib_code = ''PRIORITY'' THEN ''' || p_doc_attribs['PRIORITY'] || '''
                WHEN attrib_code = ''PROBABLE'' THEN ''' || p_doc_attribs['PROBABLE'] || '''
                WHEN attrib_code = ''SOURCE''   THEN ''' || p_doc_attribs['SOURCE'] || '''
                WHEN attrib_code = ''MAXSIZE''  THEN ''' || p_doc_attribs['MAXSIZE'] || '''
                WHEN attrib_code = ''MINSIZE''  THEN ''' || p_doc_attribs['MINSIZE'] || '''
                WHEN attrib_code = ''INTAREA''  THEN ''' || p_doc_attribs['INTAREA']|| '''
                WHEN attrib_code = ''CVALPRF''  THEN ''' || p_doc_attribs['CVALPRF'] || '''
                ELSE attrib_value
               END
    WHERE org_id = ' || p_org_id || '
    AND document_no = ' || p_target_doc_no || '
    AND document_code = ''' || p_target_doc_code || '''';

您可以查看以下link更多这样的例子。

编辑

我认为要使其正常工作，您需要安装 PLV8 扩展，您可以找到更多信息 here

为 V 9.1.x 编辑

例如，您可以创建并传递索引数组，创建类似于以下的数组:

[
    "ERP",
    "Unknown",
    "Medium",
    "Dhaka",
    "50",
    "1000",
    "2000",
    "Dhaka, Gulshan",
    "Great",
    "200"
]

然后使用 PHP array to postgres array函数将该数组转换并传递给 postgresql 函数，并将查询中使用的数组值更改为基于索引而不是基于键，如下所示:

p_doc_attribs[3]

代替

p_doc_attribs['PREFLOC']