loadMvccTable
Syntax
loadMvccTable(path, tableName)
Arguments
path is a string indicating the absolute path of the table.
tableName is a string indicating the name of the table on disk.
Details
Load all data of an MVCC table on disk into memory.
Examples
n=5
syms=`IBM`C`MS`MSFT`JPM`ORCL`FB`GE
timestamp=09:30:00+rand(18000,n)
sym=rand(syms,n)
qty=100*(1+rand(100,n))
price=5.0+rand(100.0,n)
temp=table(timestamp,sym,qty,price)
t1= mvccTable(1:0,`timestamp`sym`qty`price,[TIMESTAMP,SYMBOL,INT,DOUBLE],"C:/DolphinDB/Data","t1")
t1.append!(temp);
loadMvccTable("C:/DolphinDB/Data",t1);
timestamp | sym | qty | price |
---|---|---|---|
1970.01.01T00:00:39.091 | MSFT | 4500 | 99.808702 |
1970.01.01T00:00:35.293 | FB | 3600 | 26.644715 |
1970.01.01T00:00:36.334 | MSFT | 3800 | 66.754334 |
1970.01.01T00:00:40.362 | ORCL | 4800 | 15.480288 |
1970.01.01T00:00:35.565 | MSFT | 1700 | 23.107408 |