forked from docs/doc-exports
Lu, Huayi
27019c2991
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Co-authored-by: Lu, Huayi <luhuayi@huawei.com> Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
80 lines
6.3 KiB
HTML
80 lines
6.3 KiB
HTML
<a name="EN-US_TOPIC_0000001772696140"></a><a name="EN-US_TOPIC_0000001772696140"></a>
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<h1 class="topictitle1">SELECT AS</h1>
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<div id="body8662426"><p id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_p8060118">GaussDB(DWS) variable names are case insensitive, and TD variable names are case sensitive. To ensure that the TD script is correct before and after the migration, retain the case of the original variable name in the variable definition of the SELECT statement. The converted variable is defined in the <strong id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_b1577593615556">AS</strong> <em id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_i19743241135518">variable_name</em>.</p>
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<p id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_p226275419379"><strong id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_b136511621165218">Input</strong></p>
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<pre class="screen" id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_screen396915815215">SELECT TRIM('${JOB_NAME}') AS JOB_NAME
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,CASE WHEN LENGTH(trim(STRTOK('${JOB_NAME}','-',4)))=2
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THEN trim(STRTOK('${JOB_NAME}','-',4))
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ELSE ''
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END AS EDW_BANK_NM
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,TRIM('${TX_DATE}') AS TX_DATE
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,USER AS ETL_USER
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,CAST( CURRENT_TIMESTAMP(0) AS VARCHAR(19)) AS CURR_STIME
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,'${ETL_DATA}' AS ETL_DATA
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,'T61_INDV_CUST_ACCT_ORG_AUM' AS TARGET_TABLE
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,'CAST(''8999-12-31'' AS DATE)' AS MAXDATE
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;
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.IF ERRORCODE <> 0 THEN .QUIT 12</pre>
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<p id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_p19470419331"><strong id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_b781311814527">Output</strong></p>
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<pre class="screen" id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_screen68014281242">SELECT
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TRIM( '${job_name}' ) AS "JOB_NAME"
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,CASE
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WHEN LENGTH( TRIM( split_part ( '${job_name}' ,'-' ,4 ) ) ) = 2 THEN TRIM( split_part ( '${job_name}' ,'-' ,4 ) )
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ELSE ''
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END AS "EDW_BANK_NM"
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,TRIM( '${tx_date}' ) AS "TX_DATE"
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,USER AS "ETL_USER"
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,CAST( CURRENT_TIMESTAMP( 0 ) AS VARCHAR( 19 ) ) AS "CURR_STIME"
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,'${etl_data}' AS "ETL_DATA"
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,'T61_INDV_CUST_ACCT_ORG_AUM' AS "TARGET_TABLE"
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,'CAST(''8999-12-31'' AS DATE)' AS "MAXDATE" ;
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\if ${ERROR} != 'false'
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\q 12
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\endif
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;</pre>
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<p id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_p590311181646">Definition nested with AS expression is implemented by splitting multiple statements.</p>
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<p id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_p1321011401741"><strong id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_b13712173819131">Input</strong></p>
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<pre class="screen" id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_screen067451011117">SELECT TRIM('${JOB_NAME}') AS JOB_NAME
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,'CAST(''0001-01-02'' AS DATE)' AS ILLDATE
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,'T61_INDV_CUST_HOLD_PROD_IND_AUM' AS TARGET_TABLE
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,0 AS NULLNUMBER
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,'CAST(''00:00:00.999'' AS TIME(3))' AS NULLTIME
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,'CAST(''0001-01-01 00:00:00.000000'' AS TIMESTAMP(6))' AS NULLTIMESTAMP
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,'VT_'||TARGET_TABLE AS VT_TABLE
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,'V'||SUBSTR(TARGET_TABLE,2,CHAR(TARGET_TABLE)-1) AS TARGET_TABLE_V
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,'${GDM_DETAIL_DDL}' AS V_TDDLDB
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,'${GDM_DETAIL_VIEW}' AS V_TARGETDB
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,'${UDF}' AS V_PUB_UDF
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;
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.IF ERRORCODE <> 0 THEN .QUIT 12</pre>
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<p id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_p11898431416"><strong id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_b108321454139">Output</strong></p>
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<pre class="screen" id="EN-US_TOPIC_0000001772696140__en-us_topic_0000001658024714_en-us_topic_0000001399217102_screen767992271115">SELECT
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TRIM( '${job_name}' ) AS "JOB_NAME"
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,'CAST(''0001-01-02'' AS DATE)' AS "ILLDATE"
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,'T61_INDV_CUST_HOLD_PROD_IND_AUM' AS "TARGET_TABLE"
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,0 AS "NULLNUMBER"
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,'CAST(''00:00:00.999'' AS TIME(3))' AS "NULLTIME"
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,'CAST(''0001-01-01 00:00:00.000000'' AS TIMESTAMP(6))' AS "NULLTIMESTAMP"
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,'${gdm_detail_ddl}' AS "V_TDDLDB"
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,'${gdm_detail_view}' AS "V_TARGETDB"
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,'${udf}' AS "V_PUB_UDF" ;
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SELECT
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'VT_' || '${TARGET_TABLE}' AS "VT_TABLE" ;
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SELECT
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'V' || SUBSTR( '${TARGET_TABLE}' ,2 ,LENGTH( '${TARGET_TABLE}' ) - 1 ) AS "TARGET_TABLE_V" ;
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\if ${ERROR} != 'false'
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\q 12
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\endif
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;</pre>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_16_0087.html">SELECT</a></div>
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</div>
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</div>
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