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4. search相关语法

searchApi概览

• URIsearch

GET /movies/_search?q=2012&df=title&sort=year:desc&from=0&size=10&timeout=1s

1 q 指定查询语句,使用Query String Syntax

2 df 默认字段,不指定时,会对所有字段进行查询

3 sort 排序 from 和size用于分页

4 Profile可以查看查询时如何被执行的

Query String Syntax

• 指定字段 OR 泛查询

q=title:2012 q=2012

# 泛查询对所有字段进行查询
GET /movies/_search?q=2012
{
    "profile":"true"
}
////

# 指定字段查询
GET /movies/_search?q=2012&df=title
{
    "profile":"true"
}
或者
GET /movies/_search?q=title:2012

{
    "profile":"true"
}

- Term OR Phrase

• Beautiful Mind 等效于 Beautiful OR Mind

• "Beautiful Mind" 等效与Beautiful AND Mind Phrase要求顺序保持一致

#使用引号，Phrase查询
GET /movies/_search?q=title:"Beautiful Mind"
{
    "profile":"true"
}
//
#
GET /movies/_search?q=title:Beautiful Mind
{
    "profile":"true"
}

- 分组 BOOl插叙与引号

title:(Beautiful Mind)

title="Beautiful Mind"

• 布尔操作 AND OR NOT 必须大写

title:(Beautiful OR Mind)

• 分组

• 表示must

• 表示 must_not

title:(+ase -def)

# 查找美丽心灵
GET /movies/_search?q=title:(Beautiful AND Mind)
{
    "profile":"true"
}

# 查找美丽心灵
GET /movies/_search?q=title:(Beautiful NOT Mind)
{
    "profile":"true"
}

# 查找美丽心灵
GET /movies/_search?q=title:(Beautiful %2BMind)
{
    "profile":"true"
}

- #范围查询 ,区间写法

year: >=1890

year:[1234 TO 3456]

GET /movies/_search?q=title:beautiful AND year:[2002 TO 2018]
{
    "profile":"true"
}

• 通配符查询 ? *

  GET /movies/_search?q=title:b*
  {
      "profile":"true"
  }
  

• 正则表达式

title:[ad]xy

• 模糊近似度匹配

GET /movies/_search?q=title:beautifl~1
{
    "profile":"true"
}

GET /movies/_search?q=title:"Lord Rings"~2
{
    "profile":"true"
}