c6bc0a03a4
Main subtask of [DSIP-28](https://cwiki.apache.org/confluence/display/DORIS/DSIP-028%3A+Suppot+MySQL+Load+Data) ## Problem summary Support mysql load syntax as below: ```sql LOAD DATA [LOCAL] INFILE 'file_name' INTO TABLE tbl_name [PARTITION (partition_name [, partition_name] ...)] [COLUMNS TERMINATED BY 'string'] [LINES TERMINATED BY 'string'] [IGNORE number {LINES | ROWS}] [(col_name_or_user_var [, col_name_or_user_var] ...)] [SET (col_name={expr | DEFAULT} [, col_name={expr | DEFAULT}] ...)] [PROPERTIES (key1 = value1 [, key2=value2]) ] ``` For example, ```sql LOAD DATA LOCAL INFILE 'local_test.file' INTO TABLE db1.table1 PARTITION (partition_a, partition_b, partition_c, partition_d) COLUMNS TERMINATED BY '\t' (k1, k2, v2, v10, v11) set (c1=k1,c2=k2,c3=v10,c4=v11) PROPERTIES ("auth" = "root:", "strict_mode"="true") ``` Note that in this pr the property named `auth` must be set since stream load need auth. I will optimize it later.
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