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fix readme
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‎NewReadMe.md‎

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* New Update and UpdateAsync upgrade: CASE
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# New Update and UpdateAsync upgrade: CASE
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** A new feature added to allow developers to programmatically set CASE WHEN when assigning values. Feature includes grouping in sub statements () or
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** to allow condition to point to a column variable instead of a direct paramater value. SQL injection friendly
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## A new feature added to allow developers to programmatically set CASE WHEN when assigning values. Feature includes grouping in sub statements () or
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## to allow condition to point to a column variable instead of a direct paramater value. SQL injection friendly
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** Original Update Statement for multiple records using anonymous objects:
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## Original Update Statement for multiple records using anonymous objects:
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*** foreach (var item in data)
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### foreach (var item in data)
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*** {
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### {
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*** object obj = new
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### object obj = new
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*** {
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### {
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*** MyField = item.Value
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### MyField = item.Value
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*** };
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### };
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*** cnt += await QueryFactory.Query(tableName).Where("Id", item.Id).UpdateAsync(value);
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### cnt += await QueryFactory.Query(tableName).Where("Id", item.Id).UpdateAsync(value);
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*** }
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### }
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*** return cnt;
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### return cnt;
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** New Update with select case using multi-level array systems
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** version 1 : allows is equal condition only for now
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** For the Else it will always fill with name of field itself , self assigning.
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** This happens if format is wrong as well.
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** The else protects you fro your field to be set back to NULL
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## New Update with select case using multi-level array systems
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## version 1 : allows is equal condition only for now
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## For the Else it will always fill with name of field itself , self assigning.
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## This happens if format is wrong as well.
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## The else protects you fro your field to be set back to NULL
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*** Warning: Limitation is requires , Suggest 200 rows for low number columns,
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*** 25 for higher number columns or clauses.
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### Warning: Limitation is requires , Suggest 200 rows for low number columns,
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### 25 for higher number columns or clauses.
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var datac = data.Chunk(200); // breaking data up to 200 rows
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**standard: Case WHEN x = A then Y... END:
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*** In your cases array the flow is [x,A,Y].
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*** Assignmet value is always last.
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##standard: Case WHEN x = A then Y... END:
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### In your cases array the flow is [x,A,Y].
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### Assignmet value is always last.
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** Available Feaure 1 : While its common to do 3 items for basic, when can extend the criteria with AND and OR
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** It combine, the array column after the orevioud criteria field must be an AND or OR, unless using , () or * explained later
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## Available Feaure 1 : While its common to do 3 items for basic, when can extend the criteria with AND and OR
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## It combine, the array column after the orevioud criteria field must be an AND or OR, unless using , () or * explained later
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*** Note: Assignmet value is always last. you can use AND,&&,& or OR,||,|, <>. Not case sensitive.
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### Note: Assignmet value is always last. you can use AND,&&,& or OR,||,|, <>. Not case sensitive.
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*** Case WHEN x = A AND z = B then Y ... END:
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*** In your cases array the flow is [x,A,"AND",z,B,Y]
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*** Case WHEN x = A OR z = B then Y ... END:
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*** Array the flow is [x,A,"OR",z,B,Y]
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### Case WHEN x = A AND z = B then Y ... END:
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### In your cases array the flow is [x,A,"AND",z,B,Y]
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### Case WHEN x = A OR z = B then Y ... END:
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### Array the flow is [x,A,"OR",z,B,Y]
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** Available Feaure 2 : Subset (). This allows seperating your "And" & "Or" blocks
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*** ex: case when (a = 1 or a = 5) and (b = 7 and c = 2)
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*** This can be placed anywhere before the assignment column or * assignment column,
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*** if you forget to add the ) to close, the engine
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*** will compensate.
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## Available Feaure 2 : Subset (). This allows seperating your "And" & "Or" blocks
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### ex: case when (a = 1 or a = 5) and (b = 7 and c = 2)
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### This can be placed anywhere before the assignment column or * assignment column,
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### if you forget to add the ) to close, the engine
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### will compensate.
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*** Case WHEN (x = A AND z = B) OR J = C then Y ... END:
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*** Array the flow is ["(",x,A,"AND",z,B,")","OR",j,c,Y]
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*** Case WHEN (x = A OR z = B) AND (J = C AND K = D) then Y ... END:
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*** Array the flow is ["(",x,A,"OR",z,B,")","AND","(",j,c,"AND",k,d,")" Y]
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### Case WHEN (x = A AND z = B) OR J = C then Y ... END:
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### Array the flow is ["(",x,A,"AND",z,B,")","OR",j,c,Y]
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### Case WHEN (x = A OR z = B) AND (J = C AND K = D) then Y ... END:
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### Array the flow is ["(",x,A,"OR",z,B,")","AND","(",j,c,"AND",k,d,")" Y]
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** Available Feaure 3 : To Another Column Field (*). This allows criteria to check if column equals another column (field)
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*** Case WHEN (colx = colb AND colz = colx) then Y ... END:
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*** Array the flow is [,colx,*',colb,"AND",colz,colx, Y]
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## Available Feaure 3 : To Another Column Field (*). This allows criteria to check if column equals another column (field)
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### Case WHEN (colx = colb AND colz = colx) then Y ... END:
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### Array the flow is [,colx,*',colb,"AND",colz,colx, Y]

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