mysql> create table test_inex_1( -> data json, -> gen_col varchar(10) generated always as (json_extract(data, '$.name')), -- 抽取data中的name, 生成新的一列,名字为gen_col -> index idx (gen_col) -- 将gen_col 作为索引 -> ); Query OK, 0 rows affected (0.13 sec) mysql> s...
SELECTdata->'$.name'ASnameFROMmy_tableWHEREdata->'$.name'IN('John','Jane'); 1. 2. 3. JSON字段的IN查询 要在JSON字段中执行IN查询,我们可以使用JSON_CONTAINS函数。该函数接受两个参数:要查询的JSON字段和要查询的值。如果JSON字段中包含给定的值,则返回1;否则返回0。 以下是一个示例,使用JSON_CONT...
MySQL 5.7 Reference Manual/Functions and Operators/ JSON Functions 12.17 JSON Functions 12.17.1 JSON Function Reference 12.17.2 Functions That Create JSON Values 12.17.3 Functions That Search JSON Values 12.17.4 Functions That Modify JSON Values ...
Unknown table 't_json' in a table function argument 四、例子 数据库版本:centos8 mysql8.0.27 企业版(社区版) 建表T_JSON: CREATETABLE`t_json` ( `id`intunsignedNOTNULLAUTO_INCREMENT, `book` jsonDEFAULTNULL,PRIMARYKEY(`id`) ) ENGINE=InnoDB AUTO_INCREMENT=3DEFAULTCHARSET=utf8mb4 COLLATE=utf...
MySQL also supports “pretty-printing” of JSON values in an easy-to-read format, using the JSON_PRETTY() function. You can see how much storage space a given JSON value takes up, and how much space remains for additional storage, using JSON_STORAGE_SIZE() and JSON_STORAGE_FREE(), resp...
public static function clickRecord($itemId = 0, $page = 1, $size = 20) { $result['count'] = 0; $result['list'] = []; $pageName = [ 'api/GoodsItem/read', 'api/GoodsItem/readnew', 'api/GoodsItem/details' ]; $where[] = ['page_name', 'in', $pageName]; ...
public static function clickCount($goodsItemIds = []) { $pageName = [ 'api/GoodsItem/read', 'api/GoodsItem/readnew', 'api/GoodsItem/details' ]; $goodsItemIds = implode(",", $goodsItemIds); $where[] = ['page_name', 'in', $pageName]; ...
区别:->>会去除包裹的"及转义符号,其等价Function是JSON_EXTRACT() --{"mascot":"Our mascot is a dolphin named \"Sakila\"."}SELECT col->"$.mascot"FROM qtest; -- |"Our mascot is a dolphin named \"Sakila\"."| SELECT sentence->>"$.mascot"FROM facts; ...
mysql>SELECT*FROMtestprojectWHEREJSON_CONTAINS(student,1,'$.id');ERROR3146(22032):Invalid data typeforJSONdatainargument2tofunctionjson_contains;aJSONstring orJSONtype is required.mysql> 这里必须要使用字符串: 代码语言:javascript 复制 mysql>SELECT*FROMtestprojectWHEREJSON_CONTAINS(student,'1','$.id...
When executing a simple JSON_TABLE example in MySql Workbench 8.0 getting ""(" is not valid at this position, expecting EOF, ';'" error. I'm using MySql version 8.0.20. Any help is much appreciated. SELECT tt.* FROM JSON_table( ...