[|\\]|")','') 3.使用字符串分割函数...split select split( regexp_replace( get_json_object('{"viewdata":[{"city_id":"39","position_id...'],'"}') 2.对分割出来的每一个元素进行正则匹配,提取出qd_title对应的value -- qd_titles 为上面分割出数组的一个元素 re
SELECTid,name,JSON_EXTRACT(grades,'$.math')+JSON_EXTRACT(grades,'$.english')+JSON_EXTRACT(grades,'$.history')AStotal_gradeFROMstudents; 1. 2. 在上面的SQL语句中,我们使用JSON_EXTRACT函数从grades列中提取每个科目的成绩,并将它们相加得到总分。JSON_EXTRACT函数的第一个参数是JSON字符串,第二个参数是...
如果数据已经在SelectDB表中,可通过Insert Into Select进行数据ETL(Extract,Transform,Load)转换,并将其保存到一个新表中。例如,将SelectDB中store_sales表中region为bj的数据保存至新表bj_store_sales,具体语句如下。 INSERTINTObj_store_salesSELECTid, total, user_id, sale_timestampFROMstore_salesWHEREregion=...
EXTRACT TO_STRING TO_TIMESTAMP UTCNOW 业务流程 对象有效性校验 对象是否存在 访问权限 对象的格式 对象的加密参数 对象的大小 对象的压缩格式 对象的数据的字符集 请求消息体校验 SQL的解析和校验 缓存中提取检索结果 缓存中提取SQL的解析结果 执行SQL 封装返回结果 技术点 SQL解析 语法校验 转换为语法树 执行...
UDF UDF是最基础的用户自定义函数,以自定义一个求字符串长度的udf为例:val udf_str_length = udf{(str:String) => str.length} spark.udf.register("str_length",udf_str_length) val ds =sparkSession.read.json("路径/people.json") ds.createOrReplaceTempView("people") sparkSession.sql("select str...
日期函数:例如 DATE_ADD 函数、DATE_DIFF 函数、EXTRACT 函数、TO_STRING 函数、TO_TIMESTAMP 函数、UTCNOW 函数。 字符串函数:例如 CHAR_LENGTH 函数、CHARACTER_LENGTH 函数、LOWER 函数、SUBSTRING 函数、TRIM 函数、UPPER 函数。 说明 有关SQL 函数的详细信息,请参见SQL 函数。
Think of jq ‘select’ as a sieve that filters out the JSON data you need. It’s a powerful tool that can help you extract the exact information you need from a sea of JSON data. In this guide, we’ll walk you through the process of using jq ‘select’, from basic usage to advan...
json_extract_exact(<json>,<string>) Text functions lower(<str>) upper(<str>) See Evaluation functions in the Splunk Cloud Platform Search Reference. The <eval-expression> additionally supports Boolean, mathematical, and comparison operators. The timestamp_from_unixtime() and timestamp_to_un...
extract string between two characters/string, first character is 'Test Name:' and second character is line break i.e., <br> or end of line. Extracting domain name from FQDN fully qualified domain name see example Extracting only year from getdate() function... Extracting substring between tw...
The following options are available in the dialog that opens when you clickChange Element(for JSON Assertor) orModify(for JSON Data Bank). Selected XPath Options XPath: Displays the XPath indicating the value to extract. If you are looking for a more general XPath, you can easily type in ...