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全部博文（487）
发布时间：2019-11-04 10:49:06
Which two statements are true about transactions in the Oracle Database serve?B) Data Manipulation Language (DML) statements always start a new transaction.D) A Data Detiniton Language (DDL) statement does a commit automatially only for the data dictionary updates caused by the DDLF) I.........【阅读全文】
发布时间：2019-11-04 10:18:09
In the PROMOTIONS table, the PROMO_BEGTN_DATE columm is of datatype DATE and the default date format is DD-MON-RR.A) TO_NUMBER(PROMO_ BEGIN_DATE) - 5 will return numberC) PROMO_BEGIN_DATE - SYSDATE will return a number.E) PROMO_BEGIN_DATE - SYSDATE will return an error.(解析：这道.........【阅读全文】
发布时间：2019-10-30 13:05:01
The PRODUCT_INFORMATION table has a UNIT_PRICE column of data type NUMBER(8, 2).SELECT TO_CHAR(unit_price,'$9,999') FROM Product_intormation;A) A row whose UNIT_PRICE column contains the value 1023.99 will be displayed as $1,024.C) A row whose UNIT_PRICE column contains the value 10235.........【阅读全文】
发布时间：2019-10-30 11:21:45
The INVOICE table has a QTY_SOLD column of data type NUMBER and an INVOTCE_DATE column of data type DATEWhich two are true about data type conversions involving these columns in query expressions?B) qty_sold =' 05549821 ' : requires explicit conversionD) qty_sold BETWEEN '101' AND '110.........【阅读全文】
发布时间：2019-10-28 16:57:13
Which two statements are true about the WHERE and HAVING clouses in a SELECT statement?B) WHERE and HAVING clauses can be used In the same statement only if applied to dfferent table columns.D) Aggregating functions and columns used in HAVING clauses must be spectfied in thes SELECT list o.........【阅读全文】
