例如，我想计算一个单词在字符串中出现的次数，
[{"lastUpdatedDateTime":{"timestamp":1.54867752522E12},"messageStatus":"DELIVERED","phoneNumber":"+916000060000"},{"lastUpdatedDateTime":{"timestamp":1548677525220},"messageStatus":"DELIVERED","phoneNumber":"+916000060000"}]提前致谢。
sqlite ×1