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jsonsql

發布時間: 2022-01-16 04:23:31

⑴ 如何將拼湊的json串存入sqlserver中

先檢查資料庫中保存這個數據的欄位的數據類型是否設置有誤,這種大量字元的欄位,數據類型可以使用text或者varchar(max),如果資料庫的欄位設置沒有問題,請檢查存儲前的代碼,是否有字元串截斷操作。

⑵ 如何把多種數據轉為json存儲到sql

Jquery Ajax非同步。在ashx中插入sql

⑶ mysql資料庫中某個欄位存的是json數據,如何對json數據中的數據進行操作

這個可以吧json格式的字元串解析成數組json_decode()函數,變成數組以後就可以方便操作了,可以刪除數組中的任意一項,也可以增加一項比如:array_push($data,['sort'=>3,'catentryId'=>10003]),再變成json格式的存入資料庫。方法有多種,這里簡單的示例下

⑷ 怎麼把sql的文件轉換成json

PHP取Mysql數據並轉換為json格式,這很簡單
過程分為取數據-保存為數組-json格式輸出三步
取數據分為連接與查詢(條件等),參考下面文章
保存為數組也容易,array_push就行
json格式的輸換最為便捷,只需echo
json_encode($myArr);
輸出的就...

⑸ sql 處理 json

json的數據json.loads進來以後會變成一個json的對象,你需要自己把python對象中的欄位值取出來,拼成sql語句你可以把這個過程封裝成一個函數importjsondefsave_json(json_str):obj=json.loads(json_str)sql='insertintotblvalues("%s")'%obj['id']#這里注意編碼,要轉成資料庫的編碼格式#blabla

⑹ java將json數據解析為sql語句

importjava.util.Iterator;
importjava.util.Set;
importjava.util.Map.Entry;

importcom.google.gson.JsonArray;
importcom.google.gson.JsonElement;
importcom.google.gson.JsonObject;
importcom.google.gson.JsonParser;

publicclassSql
{
publicstaticStringparseSQL(Stringjson)
{
JsonParserparser=newJsonParser();
JsonObjectobj=(JsonObject)parser.parse(json);;
Stringtable=obj.get("table").getAsString();
Stringop_type=obj.get("op_type").getAsString();
Stringsql="";
if("I".equals(op_type))
{
sql+="INSERTINTO"+table+"(";
JsonObjectafter=(JsonObject)obj.get("after");
Set<Entry<String,JsonElement>>entry=after.entrySet();
Iterator<Entry<String,JsonElement>>it=entry.iterator();
Stringvs="values(";
while(it.hasNext())
{
Entry<String,JsonElement>elem=it.next();
Stringkey=elem.getKey();
Stringval=elem.getValue().toString();
sql+=key+",";
vs+=val+",";
}
sql=sql.replaceAll(",\s*$","");
vs=vs.replaceAll(",\s*$","");
sql+=")"+vs+")";
}
elseif("U".equals(op_type))
{
sql+="UPDATE"+table+"SET";
JsonObjectafter=(JsonObject)obj.get("after");
Set<Entry<String,JsonElement>>entry=after.entrySet();
Iterator<Entry<String,JsonElement>>it=entry.iterator();
while(it.hasNext())
{
Entry<String,JsonElement>elem=it.next();
Stringkey=elem.getKey();
Stringval=elem.getValue().toString();
sql+=key+"="+val+",";
}
sql=sql.replaceAll(",\s*$","");
sql+="WHERE";
after=(JsonObject)obj.get("before");
entry=after.entrySet();
it=entry.iterator();
while(it.hasNext())
{
Entry<String,JsonElement>elem=it.next();
Stringkey=elem.getKey();
Stringval=elem.getValue().toString();
sql+=key+"="+val+"AND";
}
sql=sql.replaceAll("\s*AND\s*$","");
}
elseif("D".equals(op_type))
{
sql+="DELETEFROM"+table+"WHERE";
JsonObjectafter=(JsonObject)obj.get("before");
Set<Entry<String,JsonElement>>entry=after.entrySet();
Iterator<Entry<String,JsonElement>>it=entry.iterator();
while(it.hasNext())
{
Entry<String,JsonElement>elem=it.next();
Stringkey=elem.getKey();
Stringval=elem.getValue().toString();
sql+=key+"="+val+"AND";
}
sql=sql.replaceAll("\s*AND\s*$","");
}
returnsql;
}

publicstaticvoidmain(String[]args)
{
Stringinsert=
"{"table":"GG.TCUSTORD","op_type":"I","op_ts":"2013-06-0222:14:36.000000","current_ts":"2015-09-18T13:39:35.447000","pos":"00000000000000001444","tokens":{"R":"AADPkvAAEAAEqL2AAA"},"after":{"CUST_CODE":"WILL","ORDER_DATE":"1994-09-30:15:33:00","PRODUCT_CODE":"CAR","ORDER_ID":"144","PRODUCT_PRICE":17520.00,"PRODUCT_AMOUNT":3,"TRANSACTION_ID":"100"}}";
Stringupdate=
"{"table":"GG.TCUSTORD","op_type":"U","op_ts":"2013-06-0222:14:41.000000","current_ts":"2015-09-18T13:39:35.748000","pos":"00000000000000002891","tokens":{"L":"206080450","6":"9.0.80330","R":"AADPkvAAEAAEqLzAAC"},"before":{"CUST_CODE":"BILL","ORDER_DATE":"1995-12-31:15:00:00","PRODUCT_CODE":"CAR","ORDER_ID":"765","PRODUCT_PRICE":15000.00,"PRODUCT_AMOUNT":3,"TRANSACTION_ID":"100"},"after":{"CUST_CODE":"BILL","ORDER_DATE":"1995-12-31:15:00:00","PRODUCT_CODE":"CAR","ORDER_ID":"765","PRODUCT_PRICE":14000.00,"PRODUCT_AMOUNT":3,"TRANSCATION_ID":"100"}}";
Stringdelete=
"{"table":"GG.TCUSTORD","op_type":"D","op_ts":"2013-06-0222:14:41.000000","current_ts":"2015-09-18T13:39:35.766000","pos":"00000000000000004338","tokens":{"L":"206080450","6":"9.0.80330","R":"AADPkvAAEAAEqLzAAC"},"before":{"CUST_CODE":"DAVE","ORDER_DATE":"1993-11-03:07:51:35","PRODUCT_CODE":"PLANE","ORDER_ID":"600"}}";
System.out.println(parseSQL(insert));
System.out.println(parseSQL(update));
System.out.println(parseSQL(delete));
}
}

⑺ 如何將網上json資料庫解析到本地的sql資料庫中啊

取得數據最開始是json字元串->轉化為json數據->保存到資料庫

json數據知道的話,很簡單了

⑻ sql 怎麼截取JSON字元串中的特定內容

代碼如下:
CREATE PROCEDURE sp_str
(
IN p_str VARCHAR(50), /*原始字元串*/
IN p_begin_str VARCHAR(50), /*要匹配的起始字元串*/
IN p_end_str VARCHAR(50)) /*要匹配的結束字元串*/
OUT p_result VARCHAR(50)) /*返回結果*/
NOT DETERMINISTIC
SQL SECURITY DEFINER
COMMENT ''
BEGIN
DECLARE m_len INT DEFAULT 0;
DECLARE m_index INT DEFAULT 0;
/*計算第一個匹配字元串的索引位置*/
select locate(p_begin_str,p_str)+char_length(p_begin_str) into m_index;
/*計算第一個匹配字元串的長度*/
select locate(p_end_str,p_str,m_index) into m_len;
select SUBSTRING(p_str,m_index,m_len-m_index) INTO p_result ;
END;

執行:
CALL sp_str('[]abcd[12345]aa[]ss','abcd[',']',@result);
返回值 @result 為12345
call sp_str('[]abcd[sdww]aa[]ss','abcd[',']',@result);
返回值 @result 為sdww
如果不用存儲過程,可以直接寫sql語句實現:

代碼如下:
select SUBSTRING(
']abcd[12345]111[]',
locate('abcd[',']abcd[12345]111[]')+CHAR_LENGTH('abcd['),
locate(']',']abcd[12345]111[]',CHAR_LENGTH('abcd['))-
(select locate('abcd[',']abcd[12345]111[]')+CHAR_LENGTH('abcd['))
)

返回值為 12345

⑼ sql中對json數據欄位的查詢

先取出string,再在內存里轉換為對象並檢查。
ps:存json是沒問題,但又想存json又想直接查,違反了資料庫的範式。

⑽ sql中json解析

你好!

withtas(select'a:[{f:,h:,checindate:''month1:,year:,day:'',checkoutdate:''month:,year:,day:'',},
{checindate:''month2:,year:,day:,'',checkoutdate:''month:,year:,day},
{checindate:''month3:,year:,day:,'',checkoutdate:''month:,year:,day}]'strfromal)
,t1as(SELECTsubstr(str,instr(str,'[')+1,instr(str,']')-instr(str,'[')-1)strFROMT)
,t2as(selectsubstr(str,instr(str,'{')+1,instr(str,'}')-instr(str,'{')-1)strfromt1)
selectstr,substr(str,instr(str,'checindate')+12,instr(str,'checkoutdate')-instr(str,'checindate')-12)fromt2;

得到第一個checindate,直接截取字元串就可以了

別搞得那麼復雜了