1.json字段數據更新值

update?cms.cms_content?set?CONTENT?=?JSON_REPLACE(CONTENT,?JSON_UNQUOTE(REPLACE(JSON_SEARCH(CONTENT,?"one",?"preLabel_120"),".code",".value")),?CAST('["1","2","3"]'?as?JSON))?where?id?=?10634;

--sql分析

---查詢path

JSON_SEARCH(CONTENT,?"one",?"preLabel_120")

---字符串轉換成path

JSON_UNQUOTE()

---替換path的值

JSON_REPLACE()

---轉換成JSON

CAST('["1","2","3"]'?as?JSON)

update?cms_content_text?set

DETAIL?=?JSON_REPLACE(DETAIL,?'$.preUrl_122',?CAST('{}'?as?JSON)?),

CONTENT?=?JSON_REPLACE(CONTENT,?JSON_UNQUOTE(REPLACE(JSON_SEARCH(CONTENT,?'one',?'preUrl_122'),'.code','.value')),?CAST('{}'?as?JSON))

where?id?in?(select?id?from?cms_content??where?tid?in?(select?t.ID?from?cms_template?t?where?t.TYPE?in?(2,9)));

2.批量更新

UPDATE CMS_CONTENT SET DETAIL = CASE ID WHEN 13558 THEN JSON_REPLACE(DETAIL,"$.preLabel_120",CAST('["13552","10373","10347"]' AS JSON)) WHEN 13559 THEN JSON_REPLACE(DETAIL,"$.preLabel_120",CAST('[]' AS JSON)) END, DETAIL_ES = CASE ID WHEN 13558 THEN JSON_REPLACE(DETAIL_ES,"$.es_multi_preLabel_120",CAST('["13552","10373","10347"]' AS JSON)) WHEN 13559 THEN JSON_REPLACE(DETAIL_ES,"$.es_multi_preLabel_120",CAST('[]' AS JSON)) END, CONTENT = CASE ID WHEN 13558 THEN JSON_REPLACE(CONTENT,JSON_UNQUOTE(REPLACE(JSON_SEARCH(CONTENT,"one","preLabel_120"),".code",".value")),CAST('["13552","10373","10347"]' AS JSON)) WHEN 13559 THEN JSON_REPLACE(CONTENT,JSON_UNQUOTE(REPLACE(JSON_SEARCH(CONTENT,"one","preLabel_120"),".code",".value")),CAST('[]' AS JSON)) END, UPDATE_DATE = "2021-01-19 13:48:01.272" WHERE ID IN (13558,13559) AND TENANT_ID = 1600035223

3.插入

從一個表復制數據插入到另外一個表，目標表中任何已存在的行都不會受影響。

語法：

INSERT?INTO?table_xxx?VALUES();INSERT?INTO?table_xxx?SELECT?xxx?from?table_yyy;

當表A和表B的表結構一致時，直接插入即可。

insert?into?A?select?*?from?B;

當表結構不一致時(字段大小、類型都相同)

insert?into?A(col1,?col2)?select?col1,?col2?from?B;

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