Qick way in creating a unique column(s) using SSIS

  • Please assist. I have developed an ETL, using these codes to get data from the source and to the destination:

    This table did not have a primary key and secondary keys with unique values. I brought it in:

    -- Table: system.IMETA_ZTRB_MP$F_ZTBR_TA_BW

    -- DROP TABLE IF EXISTS system."IMETA_ZTRB_MP$F_ZTBR_TA_BW";

    CREATE TABLE IF NOT EXISTS system."IMETA_ZTRB_MP$F_ZTBR_TA_BW"
    (
    "ZTBR_TransactionCode" integer NOT NULL DEFAULT nextval('system."ZTBR_Query_Destination_ZTBR_TransactionCode_seq"'::regclass),
    "Company_Code" character varying(4) COLLATE pg_catalog."default",
    "Posting_Period" character varying(7) COLLATE pg_catalog."default",
    "Fiscal_Year" character varying(4) COLLATE pg_catalog."default",
    "Profit_Center" character varying(255) COLLATE pg_catalog."default",
    "Account_Number" character varying(255) COLLATE pg_catalog."default",
    "Business_Process" character varying(255) COLLATE pg_catalog."default",
    "Cost_Center" character varying(10) COLLATE pg_catalog."default",
    "Internal_Order" character varying(255) COLLATE pg_catalog."default",
    "Trading_Partner" character varying(255) COLLATE pg_catalog."default",
    "Amount_in_company_code_currency" numeric(17,2),
    "Company_code_currency" character varying(5) COLLATE pg_catalog."default",
    "BRACS_FA" character varying(255) COLLATE pg_catalog."default",
    "Expense_Type" character varying(255) COLLATE pg_catalog."default",
    "BRACS_ACCT_Key" character varying(255) COLLATE pg_catalog."default",
    "CC_Direct" character varying(255) COLLATE pg_catalog."default",
    "Segment_PC" character varying(255) COLLATE pg_catalog."default",
    "CC_Master_FA" character varying(255) COLLATE pg_catalog."default",
    "Master_BRACS_Secondary_Key" integer,
    "Source_Description_Secondary_Key" integer,
    "Direct_Indirect_Secondary_Key" integer,
    "Entity_Secondary_Key" integer,
    "Region_Secondary_Key" integer,
    "RowInsertedTimestamp" date DEFAULT CURRENT_DATE,
    "RowUpdatedTimestamp" timestamp DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT "ZTBR_Query_Destination_pkey" PRIMARY KEY ("ZTBR_TransactionCode"),
    CONSTRAINT fk_direct_indirect FOREIGN KEY ("Direct_Indirect_Secondary_Key")
    REFERENCES dim."IMETA_Direct_Indirect_Mapping" ("Direct_Secondary_Key") MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION,
    CONSTRAINT fk_entity FOREIGN KEY ("Entity_Secondary_Key")
    REFERENCES dim."IMETA_Entity_Mapping" ("Entity_Secondary_Key") MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION,
    CONSTRAINT fk_master_bracs FOREIGN KEY ("Master_BRACS_Secondary_Key")
    REFERENCES dim."IMETA_Master_BRACS_to_SAP_Data_TA_BR_" ("ZTBR_TransactionCode") MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION,
    CONSTRAINT fk_source_description FOREIGN KEY ("Source_Description_Secondary_Key")
    REFERENCES dim."IMETA_Source_Description_Mapping" ("BRACS_Key") MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION
    )
    TABLESPACE pg_default;

    I want to use SSIS to bring in values starting from 1:

    "Master_BRACS_Secondary_Key" integer,

    "Source_Description_Secondary_Key" integer,

    "Direct_Indirect_Secondary_Key" integer,

    "Entity_Secondary_Key" integer,

    "Region_Secondary_Key" integer,

    These columns contain NULLS and when I try to amend it so that it can start from 1, my ETL fails because of a secondary key violation.

    This insert produce no data in table because of the secondary keys containing nulls.

    - Check if the table already exists
    DO $$
    BEGIN
    IF NOT EXISTS (
    SELECT 1
    FROM information_schema.tables
    WHERE table_name = 'IMETA_ZTBR_BRACS_Model_TA_BW'
    ) THEN
    -- Create the table
    CREATE TABLE model."IMETA_ZTBR_BRACS_Model_TA_BW" AS
    SELECT
    ZTBR."Company_Code",
    CAST(ZTBR."Posting_Period" AS INTEGER) AS "Posting_Period_Cast",
    ZTBR."Fiscal_Year",
    ZTBR."Profit_Center",
    ZTBR."Account_Number",
    ZTBR."Business_Process",
    ZTBR."Cost_Center",
    ZTBR."Internal_Order",
    ZTBR."Trading_Partner",
    ZTBR."Amount_in_company_code_currency",
    ZTBR."Company_code_currency",
    ZTBR."BRACS_FA",
    ZTBR."Expense_Type",
    ZTBR."BRACS_ACCT_Key",
    ZTBR."CC_Direct",
    ZTBR."Segment_PC",
    ZTBR."CC_Master_FA",
    DIM_REGION_MAP."CoCd",
    DIM_REGION_MAP."Sub Region" AS "DIM_Sub_Region",
    DIM_REGION_MAP."Region" AS "DIM_Region",
    DIM_REGION_MAP."BRACS Entity" AS "DIM_BRACS_Entity",
    DIM_REGION_MAP."Consul",
    DIM_REGION_MAP."Report",
    DIM_REGION_MAP."Region BRACS" AS "DIM_Region_BRACS",
    DIM_REGION_MAP."Group",
    DIM_REGION_MAP."Group BRACS" AS "DIM_Group_BRACS",
    DIM_REGION_MAP."J",
    DIM_REGION_MAP."K",
    DIM_REGION_MAP."L",
    DIM_REGION_MAP."M",
    DIM_REGION_MAP."N",
    DIM_ENT_MAP."Entity",
    DIM_ENT_MAP."Entity Name" AS "DIM_Entity_Name",
    DIM_ENT_MAP."Entity Level" AS "DIM_Entity_Level",
    DIM_ENT_MAP."Level 1" AS "DIM_Level_1",
    DIM_ENT_MAP."Level 2" AS "DIM_Level_2",
    DIM_ENT_MAP."Level 3" AS "DIM_Level_3",
    DIM_ENT_MAP."Level 4" AS "DIM_Level_4",
    DIM_ENT_MAP."Level 5" AS "DIM_Level_5",
    DIM_ENT_MAP."Level 6" AS "DIM_Level_6",
    DIM_DIR_IND."CLASSIFICATION" AS "CLASSIFICATION",
    DIM_SRC_DESC."BRACS_Key" AS "DIM_SRC_DESC_BRACS_Key",
    DIM_SRC_DESC."BRACSFA",
    DIM_SRC_DESC."Function" AS "Function",
    DIM_MASTER_BRACS."ZTBR_TransactionCode" AS "ZTBR_TransactionCode",
    DIM_MASTER_BRACS."Acct Type" AS "Acct Type",
    DIM_MASTER_BRACS."Level 1" AS "Master_Level_1",
    DIM_MASTER_BRACS."Level 2" AS "Master_Level_2",
    DIM_MASTER_BRACS."Level 3" AS "Master_Level_3",
    DIM_MASTER_BRACS."GCoA" AS "GCoA",
    DIM_MASTER_BRACS."EXPENSE FLAG" AS "EXPENSE FLAG",
    DIM_MASTER_BRACS."BRACS" AS "BRACS",
    DIM_MASTER_BRACS."BRACS_DESC" AS "BRACS_DESC",
    DIM_MASTER_BRACS."Loaddate" AS "Loaddate",
    CURRENT_DATE AS "RowInsertedTimestamp",
    CURRENT_TIMESTAMP AS "RowUpdatedTimestamp",
    DIM_DIR_IND."Direct_Primary_Key" AS "Direct_Primary_Key",
    DIM_ENT_MAP."Entity_ID" AS "Entity_ID",
    DIM_MASTER_BRACS."ZTBR_TransactionCode" AS "Master_ZTBR_TransactionCode",
    DIM_SRC_DESC."BRACS_Key" AS "DIM_SRC_DESC_BRACS_Key_2",
    DIM_REGION_MAP."Region_Primary_Key" AS "Region_Primary_Key"
    FROM
    system."IMETA_ZTRB_MP$F_ZTBR_TA_BW" AS ZTBR
    JOIN
    dim."IMETA_Direct_Indirect_Mapping" AS DIM_DIR_IND ON ZTBR."Direct_Indirect_Secondary_Key" = DIM_DIR_IND."Direct_Secondary_Key"
    JOIN
    dim."IMETA_Entity_Mapping" AS DIM_ENT_MAP ON ZTBR."Entity_Secondary_Key" = DIM_ENT_MAP."Entity_Secondary_Key"
    JOIN
    dim."IMETA_Master_BRACS_to_SAP_Data_TA_BR_" AS DIM_MASTER_BRACS ON ZTBR."Master_BRACS_Secondary_Key" = DIM_MASTER_BRACS."ZTBR_TransactionCode"
    JOIN
    dim."IMETA_Source_Description_Mapping" AS DIM_SRC_DESC ON ZTBR."Source_Description_Secondary_Key" = DIM_SRC_DESC."BRACS_Key"
    JOIN
    dim."IMETA_Region_Mapping" AS DIM_REGION_MAP ON ZTBR."Region_Secondary_Key" = DIM_REGION_MAP."Region_Primary_Key";
    END IF;
    END $$;

    Im trying the Script task, but I'm getting errors:


    using System;using System.Data;using Microsoft.SqlServer.Dts.Pipeline.Wrapper;using Microsoft.SqlServer.Dts.Runtime.Wrapper; [Microsoft.SqlServer.Dts.Pipeline.SSISScriptComponentEntryPointAttribute]public class ScriptMain : UserComponent{ // Declare counter variables at the class level int rowNumber_Master_BRACS = 0; int rowNumber_Source_Description = 0; int rowNumber_Direct_Indirect = 0; int rowNumber_Entity = 0; int rowNumber_Region = 0; public override void PreExecute() { base.PreExecute(); // Initialize counter variables to start from 1 rowNumber_Master_BRACS = 0; rowNumber_Source_Description = 0; rowNumber_Direct_Indirect = 0; rowNumber_Entity = 0; rowNumber_Region = 0; } public override void Input0_ProcessInputRow(Input0Buffer Row) { // Make sure to add these columns in your Script Component's Output Columns setting Row.AddRow(); Row.Master_BRACS_Secondary_Key = ++rowNumber_Master_BRACS; Row.Source_Description_Secondary_Key = ++rowNumber_Source_Description; Row.Direct_Indirect_Secondary_Key = ++rowNumber_Direct_Indirect; Row.Entity_Secondary_Key = ++rowNumber_Entity; Row.Region_Secondary_Key = ++rowNumber_Region; } public override void PostExecute() { base.PostExecute(); }}

     

     

  • Ideally, all of your DDL should be happening outside of SSIS. Can't tell whether this is the case here.

    Use derived columns within your SSIS data flow to populate the non-nullable columns. Or modify your source query (depending on the source).

    The absence of evidence is not evidence of absence
    - Martin Rees
    The absence of consumable DDL, sample data and desired results is, however, evidence of the absence of my response
    - Phil Parkin

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