fetch first的意思

fetch first中文翻譯：

先提取

相似詞語短語

fetch rewards───獲取獎勵

fetch back───拿回來；取回

can fetch───可以提取

fetch into───進入

fetch api───獲取api

git fetch───git獲取

fetch app───獲取應用程序

fetch ruffman───去叫流氓來

fetch from───從…取出；把…從…接[取]來; 招來（某人），引起

雙語使用場景

In essence, the OPEN positions into the index and the FETCH first will retrieve the first row based on the RRN provided by the index.───上，OPEN定位到索引中，FETCH FIRST將基于索引提供的rrn檢索第一行。

Listing 19 lists the plan showing the efficient use (FETCH (8)) of ORDER BY and FETCH FIRST 1 ROW ONLY discussed above.───清單19列出的計劃展示了使用前面討論的ORDER BY的(FETCH(8))和FETCH FIRST 1 ROW ONLY的效率。

The FETCH FIRST clause encourages sort avoidance.───FETCH FIRS t子句鼓勵規避排序。

The FETCH FIRST clause encourages sort avoidance.───FETCHFIRST子句鼓勵規避排序。

英語使用場景

Without the FETCH FIRST (or similarly, but not exactly, without an OPTIMIZE FOR clause), then DB2 would almost certainly prefer some other access path.