Multi-part looked-up table field and its use to in data processing operations involving multiple tables of a relational database
First Claim
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1. A method comprising:
- parsing a data processing statement;
identifying table field or fields referenced in said data processing statement;
for each identified table field, determining whether the table field is a looked-up field;
identifying a basis table of which non-looked up ones of said identified table field or fields are members;
identifying one or more target tables from which said looked-up one or ones of said identified table field or fields are to be looked up;
generating a SQL statement, including with said generated SQL statement field or fields to be selected from said basis table and a FROM clause enumerating said basis table, and if the data processing statement was determined to contain one or more fields to be looked up from one or more target tables, further including among said field or fields to be selected said one or more fields to be looked up from said one or more target tables, and one or more JOIN clauses respectively joining said basis table and said one or more target tables, and one or more corresponding ON clauses respectively specifying one or more corresponding conditions on which rows of said basis and said one or more target tables are to be joined, each of said one or more conditions comprising a corresponding look-up field.
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Accused Products
Abstract
In accordance with a first aspect, a software component is equipped to identify looked-up table fields in a data processing statement, and automatically includes with a SQL statement one or more appropriate JOIN clauses joining one or more target tables from which the table fields are to be looked up with a basis table. In one embodiment, the looked-up table fields are expressed in a multi-part form. In accordance with a second aspect, a software component is equipped to automatically expand table fields available for inclusion in a data processing operation to include table fields of a target table of a look-up table field, in response to the selection of the look-up table field. In one embodiment, the second aspect is practiced in conjunction with the automatic inclusion of appropriate JOIN clauses to a SQL statement of the first aspect.
7 Citations
16 Claims
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1. A method comprising:
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parsing a data processing statement; identifying table field or fields referenced in said data processing statement; for each identified table field, determining whether the table field is a looked-up field; identifying a basis table of which non-looked up ones of said identified table field or fields are members; identifying one or more target tables from which said looked-up one or ones of said identified table field or fields are to be looked up; generating a SQL statement, including with said generated SQL statement field or fields to be selected from said basis table and a FROM clause enumerating said basis table, and if the data processing statement was determined to contain one or more fields to be looked up from one or more target tables, further including among said field or fields to be selected said one or more fields to be looked up from said one or more target tables, and one or more JOIN clauses respectively joining said basis table and said one or more target tables, and one or more corresponding ON clauses respectively specifying one or more corresponding conditions on which rows of said basis and said one or more target tables are to be joined, each of said one or more conditions comprising a corresponding look-up field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus comprising:
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storage medium having stored therein programming instructions, when executed, operate the apparatus to parse a data processing statement, identify table field or fields referenced in said data processing statement, determine, for each identified table field, whether the table field is a looked-up field, identify a basis table of which non-looked up ones of said identified table field or fields are members, identify one or more target tables from which said looked-up one or ones of said identified table field or fields are to be looked up, and generate a SQL statement, including with said generated SQL statement field or fields to be selected from said basis table and a FROM clause enumerating said basis table, and if the data processing statement was determined to contain one or more fields to be looked up from one or more target tables, further including among said field or fields to be selected said one or more fields to be looked up from said one or more target tables, and one or more JOIN clauses respectively joining said basis table and said one or more target tables, and one or more corresponding ON clauses respectively specifying one or more corresponding conditions on which rows of said basis and said one or more target tables are to be joined, each of said one or more conditions comprising a corresponding look-up field; and one or more processors coupled to the storage medium to execute the programming instructions. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification
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Current AssigneeOracle International Corporation (Oracle Corporation)
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Original AssigneeBEA Systems Incorporated (Oracle Corporation)
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InventorsBellew, Matthew A.
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Primary Examiner(s)Alam, Hosain
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Assistant Examiner(s)SHECHTMAN, CHERYL MARIA
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Application NumberUS10/038,412Publication NumberTime in Patent Office1,545 DaysField of Search707/102, 707/2US Class Current1/1CPC Class CodesG06F 16/2423 Interactive query statement...Y10S 707/99932 Access augmentation or opti...Y10S 707/99934 Query formulation, input pr...Y10S 707/99943 Generating database or data...Y10S 707/99952 Coherency, e.g. same view t...
