add documentation for sleep() function
Project: http://git-wip-us.apache.org/repos/asf/trafodion/repo Commit: http://git-wip-us.apache.org/repos/asf/trafodion/commit/aece4997 Tree: http://git-wip-us.apache.org/repos/asf/trafodion/tree/aece4997 Diff: http://git-wip-us.apache.org/repos/asf/trafodion/diff/aece4997 Branch: refs/heads/master Commit: aece4997c66b13fe845f980082713f17e07cc4d1 Parents: 95348f4 Author: LiuMing <ovis_p...@sina.com> Authored: Sun Aug 19 17:36:19 2018 +0800 Committer: LiuMing <ovis_p...@sina.com> Committed: Sun Aug 19 17:36:19 2018 +0800 ---------------------------------------------------------------------- .../sql_functions_and_expressions.adoc | 36 +++++++++++++++++--- 1 file changed, 32 insertions(+), 4 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/trafodion/blob/aece4997/docs/sql_reference/src/asciidoc/_chapters/sql_functions_and_expressions.adoc ---------------------------------------------------------------------- diff --git a/docs/sql_reference/src/asciidoc/_chapters/sql_functions_and_expressions.adoc b/docs/sql_reference/src/asciidoc/_chapters/sql_functions_and_expressions.adoc index daa3d83..f131ab9 100644 --- a/docs/sql_reference/src/asciidoc/_chapters/sql_functions_and_expressions.adoc +++ b/docs/sql_reference/src/asciidoc/_chapters/sql_functions_and_expressions.adoc @@ -444,7 +444,8 @@ the expressions have NULL values, the function returns a NULL value. associated with the specified user ID number. | <<sys_guid_function,SYS_GUID Function>> | Returns a globally unique identifier. (Oracle extention) | <<uuid_function,UUID Function>> | Returns a globally unique identifier. -| <<uuid_short_function,UUID Function>> | Returns a âshortâ universal identifier as a 64-bit unsigned integer. +| <<uuid_short_function,UUID_SHORT Function>> | Returns a âshortâ universal identifier as a 64-bit unsigned integer. +| <<sleep_function,SLEEP Function>> | Sleep for a number of seconds |=== See the individual entry for the function. @@ -11330,19 +11331,20 @@ ID <<< [[uuid_short_function]] == UUID_SHORT Function +Returns a âshortâ universal identifier as a 64-bit unsigned integer. NOTE: But UUID_SHORT() can only be used in SELECT list, or very simple expressions to get a UUID. Do not use it in WHERE clause, the behavior is non-deterministic. ``` -UUID () +UUID_SHORT () ``` [[data_type_of_the_result]] ==== Data Type of the Result -The data type of the result is always LARGEINT. +The data type of the result is always UNSIGNED LARGEINT. [[examples_of_uuid_short]] === Examples of UUID_SHORT @@ -11354,7 +11356,33 @@ SELECT UUID_SHORT() AS ID FROM dual; ID ------------------------- - 92395783831158784 + 4716501302154732154 + +--- 1 row(s) selected. +``` + +<<< +[[sleep_function]] +== SLEEP Function +Sleeps (pauses) for the number of seconds given by the duration argument, then returns 1. + +``` +SLEEP( seconds ) +``` + +[[examples_of_sleep]] +=== Examples of SLEEP + +* Sleep (Pause) for a given number of seconds ++ +``` +SELECT SLEEP(5) AS ID FROM dual; + +(EXPR) +----------- + + 1 + --- 1 row(s) selected. ```
