Example: Copying Foreign Table without Data - Analytics Database - Teradata Vantage

CREATE FOREIGN TABLE Statement for Original Foreign Table

The following statement creates the foreign table riverflow_0627. Vantage detects the JSON data type and creates the JSON payload column.

CREATE FOREIGN TABLE riverflow_0627, 
  EXTERNAL SECURITY MyAuthObj
  USING (
    LOCATION ('/S3/YOUR-BUCKET.s3.amazonaws.com/JSONDATA/09380000/2018/06/27.json')
  );

CREATE TABLE AS … WITH NO DATA Statement for Copy

CREATE TABLE rivercopy_0627_t
AS riverflow_0627 WITH NO DATA;

Definition of Copy

Show the definition of the table:

SHOW TABLE myDB.rivercopy_0627_t;

Result:

CREATE MULTISET FOREIGN TABLE myDB.rivercopy_0627_t ,FALLBACK ,
     EXTERNAL SECURITY MyAuthObj ,
     MAP = TD_MAP1
     (
      Location VARCHAR(2048) CHARACTER SET UNICODE CASESPECIFIC,
      Payload JSON(8388096) INLINE LENGTH 32000 CHARACTER SET UNICODE)
USING
(
      LOCATION  ('/S3/YOUR-BUCKET.s3.amazonaws.com/JSONDATA/09380000/2018/06/27.json')
      PATHPATTERN  ('$Var1/$Var2/$Var3/$Var4/$Var5/$Var6/$Var7/$Var8/$Var9/$Var10/$Var11/$Var12/$Var13/$Var14/$Var15/$Var16/$Var17/$Var18/$Var19/$Var20')
      ROWFORMAT  ('{"record_delimiter":"\n","character_set":"UTF8"}')
      STOREDAS  ('TEXTFILE')
)
NO PRIMARY INDEX ;