c02625efa9
I started a discussion on this before, you can check it in the mail group https://lists.apache.org/thread/o770bc3k623kyfks2mzkt21qsc4g6328 In order to facilitate everyone to organize the documents, I created a new-docs directory under the incubator-doris directory. The new directory structure is below this. I just created a directory structure here, which needs to be rearranged. In the data import scenario, in order to take into account the viewing habits of previous users, the import is organized in two ways: 1. According to the usage scenario: This will give users clearer guidance. For example, the user is the data source of kafka, then the user can directly select the routine to load 2. According to the import method: it is the introduction of the various import methods we provided before In order to facilitate everyone to run and debug locally, I migrated the entire .vuepress under the original document. After completion, you only need to delete the original docs directory and rename the new new-docs directory to docs. At the same time, you can also run it locally, so that you can organize documents and know the content of each document directory. In the local debugging execution, switch to the new-docs directory and execute the following command: ```` npm install npm run dev ```` then through the browser http://ip:port/zh-CN http://ip:port/en
2.2 KiB
2.2 KiB
title, language
| title | language |
|---|---|
| CAST | en |
CAST
##Description
cast (input as type)
BIGINT type
Syntax (BIGINT)
cast (input as BIGINT)
Converts input to the specified type
Converting the current column input to BIGINT type
example
- Turn constant, or a column in a table
mysql> select cast (1 as BIGINT);
+-------------------+
| CAST(1 AS BIGINT) |
+-------------------+
| 1 |
+-------------------+
- Transferred raw data
curl --location-trusted -u root: -T ~/user_data/bigint -H "columns: tmp_k1, k1=cast(tmp_k1 as BIGINT)" http://host:port/api/test/bigint/_stream_load
- Note: In the import, because the original type is String, when the original data with floating point value is cast, the data will be converted to NULL, such as 12.0. Doris is currently not truncating raw data. *
If you want to force this type of raw data cast to int. Look at the following words:
curl --location-trusted -u root: -T ~/user_data/bigint -H "columns: tmp_k1, k1=cast(cast(tmp_k1 as DOUBLE) as BIGINT)" http://host:port/api/test/bigint/_stream_load
mysql> select cast(cast ("11.2" as double) as bigint);
+----------------------------------------+
| CAST(CAST('11.2' AS DOUBLE) AS BIGINT) |
+----------------------------------------+
| 11 |
+----------------------------------------+
1 row in set (0.00 sec)
keyword
CAST