HYSQL  

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Chapter 10 - Importing and exporting of HYSQL

10.1 Export

Exporting specifies that converts  the records of HYSQL database file to a formatted .txt textfile.

syntax:TABLE COPY TableName [(FieldName[,FieldName]...)] TO TextfileName[ FIELDWITH (FieldDelimiter)][ RECORDWITH (RecordDelimiter)][ WHERE FiltrationCondition]

Notes:When the above statement is TABLE COPY TableName TO TextfileName,namely show:
Convert all records of a HYSQL database file into a textfile which seperates fields with the delimiter ",",and seperates records with the delimiter "\r\n"(return and newline).

10.2 Import

Importing is the anti-procedure of exporting,namely specifies that entirely converts a formatted .txt textfile into  records and inserts into the specified HYSQL database file.

syntax: INSERT INTO TableName [(FieldName[,FieldName]...)]  FROM  TextfileName[  FIELDWITH  (FieldDelimiter)][  WHERE FiltrationCondition]

Notes:When the above statement is INSERT INTO TableName FROM TextfileName,namely show:
Convert every line in the textfile into a record and insert into the TableNAME database file.Here the textfile seperates fields with the delimiter ",",and seperates lines with the delimiter "\r\n"(return and newline),and its fields order is corresponding to the fields order of the database file.

Notes: Except the same suffix name, the .dbf file of HYSQL is not relative to the .dbf file of other databases,one .dbf file can't convert into another .dbf file.

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