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Posted to commits@iotdb.apache.org by qi...@apache.org on 2020/04/07 09:21:27 UTC
[incubator-iotdb] branch master updated: remove .~2-Data Type
This is an automated email from the ASF dual-hosted git repository.
qiaojialin pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-iotdb.git
The following commit(s) were added to refs/heads/master by this push:
new 07f755c remove .~2-Data Type
07f755c is described below
commit 07f755c07879a8642555f76b6c0187e30defbf3c
Author: qiaojialin <64...@qq.com>
AuthorDate: Tue Apr 7 17:21:10 2020 +0800
remove .~2-Data Type
---
docs/UserGuide/2-Concept/.~2-Data Type.md | 43 -------------------------------
1 file changed, 43 deletions(-)
diff --git a/docs/UserGuide/2-Concept/.~2-Data Type.md b/docs/UserGuide/2-Concept/.~2-Data Type.md
deleted file mode 100644
index e7c0dbc..0000000
--- a/docs/UserGuide/2-Concept/.~2-Data Type.md
+++ /dev/null
@@ -1,43 +0,0 @@
-<!--
-
- Licensed to the Apache Software Foundation (ASF) under one
- or more contributor license agreements. See the NOTICE file
- distributed with this work for additional information
- regarding copyright ownership. The ASF licenses this file
- to you under the Apache License, Version 2.0 (the
- "License"); you may not use this file except in compliance
- with the License. You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing,
- software distributed under the License is distributed on an
- "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- KIND, either express or implied. See the License for the
- specific language governing permissions and limitations
- under the License.
-
--->
-
-# Data Type
-
-IoTDB supports six data types in total:
-* BOOLEAN (Boolean)
-* INT32 (Integer)
-* INT64 (Long Integer)
-* FLOAT (Single Precision Floating Point)
-* DOUBLE (Double Precision Floating Point)
-* TEXT (String).
-
-
-The time series of **FLOAT** and **DOUBLE** type can specify (MAX\_POINT\_NUMBER, see [this page](../5-Operation%20Manual/4-SQL%20Reference.html) for more information on how to specify), which is the number of digits after the decimal point of the floating point number, if the encoding method is [RLE](../2-Concept/3-Encoding.html) or [TS\_2DIFF](../2-Concept/3-Encoding.html) (Refer to [Create Timeseries Statement](../5-Operation%20Manual/4-SQL%20Reference.html) for more information on ho [...]
-
-* For Float data value, The data range is (-Integer.MAX_VALUE, Integer.MAX_VALUE), rather than Float.MAX_VALUE, and the max_point_number is 19, it is because of the limition of function Math.round(float) in Java.
-* For Double data value, The data range is (-Long.MAX_VALUE, Long.MAX_VALUE), rather than Double.MAX_VALUE, and the max_point_number is 19, it is because of the limition of function Math.round(double) in Java (Long.MAX_VALUE=9.22E18).
-
-When the data type of data input by the user in the system does not correspond to the data type of the time series, the system will report type errors. As shown below, the second-order difference encoding does not support the Boolean type:
-
-```
-IoTDB> create timeseries root.ln.wf02.wt02.status WITH DATATYPE=BOOLEAN, ENCODING=TS_2DIFF
-error: encoding TS_2DIFF does not support BOOLEAN
-```