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Update Hive常用DML操作.md

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heibaiying
2019-04-29 17:24:22 +08:00
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1 changed files with 31 additions and 32 deletions
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notes/Hive常用DML操作.md
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@@ -75,11 +75,11 @@ LOAD DATA INPATH "hdfs://hadoop001:8020/mydir/emp.txt" OVERWRITE INTO TABLE emp
### 2.1 语法 ### 2.1 语法
```sql ```sql
INSERT OVERWRITE TABLE tablename1 [PARTITION (partcol1=val1, partcol2=val2 ...) INSERT OVERWRITE TABLE tablename1 [PARTITION (partcol1=val1, partcol2=val2 ...) [IF NOT EXISTS]]
[IF NOT EXISTS]] select_statement1 FROM from_statement; select_statement1 FROM from_statement;
INSERT INTO TABLE tablename1 [PARTITION (partcol1=val1, partcol2=val2 ...)] INSERT INTO TABLE tablename1 [PARTITION (partcol1=val1, partcol2=val2 ...)]
select_statement1 FROM from_statement; select_statement1 FROM from_statement;
``` ```
+ Hive 0.13.0开始，建表时可以通过使用TBLPROPERTIES（“immutable”=“true”）来创建不可变表(immutable table) ，如果不可以变表中存在数据，则INSERT INTO失败。（注：INSERT OVERWRITE的语句不受`immutable`属性的影响）; + Hive 0.13.0开始，建表时可以通过使用TBLPROPERTIES（“immutable”=“true”）来创建不可变表(immutable table) ，如果不可以变表中存在数据，则INSERT INTO失败。（注：INSERT OVERWRITE的语句不受`immutable`属性的影响）;
@@ -243,7 +243,6 @@ DELETE FROM tablename [WHERE expression]
+ 不支持LOAD DATA ...语句。 + 不支持LOAD DATA ...语句。
```sql ```sql
-- 建表语句
CREATE TABLE emp_ts( CREATE TABLE emp_ts(
empno int, empno int,
ename String ename String