SQL instr 的相关内容

文章 2024-04-29 来自：开发者社区

MaxCompute操作报错合集之在sql 里嵌套查询时，查询条件带有instr时报错，如何解决

问题一：大数据计算MaxCompute,条件是update_time增量为什么会报错不知道这个query呢？我现在在dw里测试拉取es数据到大数据计算MaxCompute,条件是update_time增量,为什么会报错不知道这个query呢? ...

文章 2023-11-16 来自：开发者社区

在sql 里嵌套查询时，查询条件带有instr时报错

你所描述的错误可能是由于instr()函数的使用方式不正确引起的。instr()函数用于返回子串在字符串中首次出现的位置，如果不存在则返回0。对于你的例子，你需要确保t.url和sapi_endpoint都是字符串类型，并且sapi_endpoint是t.url的一部分。另外，instr()函数的第三个参数是你想开始搜索的位置࿰...

问答 2023-11-16 来自：开发者社区

在sql 里嵌套查询时，查询条件带有instr时报错，例子如下 select(select sapi_no from sapi_data where instr(t.url,sapi_endpoint)>0) as numfrom operation_sapilog_details t; 报错 FAILED: ODPS-0130071:[2,38] Semantic analysis exc...

文章 2023-05-18 来自：开发者社区

提高sql查询性能-使用instr函数替换like

使用like查询时比较慢，使用oracle的instr函数可以提高查询的效率。使用like:select f1.htbh as "htbh",f2.syqr as "cqr",f1.fwzl as "cqzl" from FCJY_CLF_MMHT f1 join FCJY_CLF_MMHT_FWQSGK f2 on f1.htid = f2.ht...

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更新时间 2024-05-01 04:31:23

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