Make CHARTEVENTS VALUENUM colum wide.

CHARTEVENTS VALUENUM column was set to DECIMAL(22, 10) but that data has to be truncated when it is inserted, because the actual data contains 7 integer part digits and 23 or less than decimal places at most. Then I made the column DECIMAL(30, 23).

Author: KenjiOhtsuka

mimic-iii/buildmimic/mysql/1-define.sql

@@ -179,7 +179,7 @@ CREATE TABLE CHARTEVENTS (	-- rows=263201375
    STORETIME DATETIME,
    CGID SMALLINT UNSIGNED,
    VALUE TEXT,	-- max=91
-   VALUENUM DECIMAL(22, 10),
+   VALUENUM DECIMAL(30, 23),
    VALUEUOM VARCHAR(50),	-- max=17
    WARNING TINYINT UNSIGNED,
    ERROR TINYINT UNSIGNED,