firebird2.5

问题 REMARK I completely rewrite the question as while exploring options and getting insights, I realized the origin of my problem was not at all what I thought. I use Firebird as a database engine and the standard .Net provider (v.5.11.0) to fetch data using following code: // myBlob1 is BLOB SUB_TYPE 1 (text field) with some empty, but some // VERY long stuff (xml-content) which exceeds VARCHAR(32765), but I removed // those before performing my tests!!! var tick = Stopwatch.StartNew();

问题 I want to use non-ascii character string literals in a firebird sql query. So I used FlameRobin to see if it works first: I used something like this: SELECT NAME FROM TABLE1 WHERE NAME = 'العربية' I also tried: SELECT NAME FROM TABLE1 COLLATE UNICODE_CI_AI WHERE NAME = 'العربية' with no success. Because I have declared NAME using UTF8 Character Set and UNICODE_CI_AI Collation. from this referential url link: https://firebirdsql.org/file/documentation/reference_manuals/fblangref25-en/html

问题 I am extending the data layer of an existing application to work with Firebird 2.5, in addition to MSSQL and SQLite, but I have hit a stumbling block. I have a field called TimeStamp which stores the data/time as type TimeStamp. This works fine under MSSQL and SQLite where the type is datetime, but falls over under Firebird. The following SQL: SELECT SysTrnId,'TimeStamp' from "TRANSACTIONS" seemingly works, but the TimeStamp field is return as fieldname "CONSTANT" and the contents are the

问题 I am extending the data layer of an existing application to work with Firebird 2.5, in addition to MSSQL and SQLite, but I have hit a stumbling block. I have a field called TimeStamp which stores the data/time as type TimeStamp. This works fine under MSSQL and SQLite where the type is datetime, but falls over under Firebird. The following SQL: SELECT SysTrnId,'TimeStamp' from "TRANSACTIONS" seemingly works, but the TimeStamp field is return as fieldname "CONSTANT" and the contents are the

问题 I'm using Firebird Embedded v2.5. How to use procedures in query (SELECT) ? My procedure: SET TERM ^ ; CREATE PROCEDURE FN_TEST( Y INTEGER ) RETURNS( X INTEGER) AS BEGIN X = Y + 1; END^ SET TERM ; ^ I want to list some field of table modified by some procedure, like this: SELECT some_table_field_1, fn_test( 4 ) AS zzz, some_table_field_2, fn_test( some_table_field_2 ) AS field_2_modified FROM tb_test Need results (table): some_table_field_1 zzz some_table_field_2 field_2_modified ------------

问题 I'm using Firebird Embedded v2.5. How to use procedures in query (SELECT) ? My procedure: SET TERM ^ ; CREATE PROCEDURE FN_TEST( Y INTEGER ) RETURNS( X INTEGER) AS BEGIN X = Y + 1; END^ SET TERM ; ^ I want to list some field of table modified by some procedure, like this: SELECT some_table_field_1, fn_test( 4 ) AS zzz, some_table_field_2, fn_test( some_table_field_2 ) AS field_2_modified FROM tb_test Need results (table): some_table_field_1 zzz some_table_field_2 field_2_modified ------------

问题 I want to return the error message from a procedure when an exception happens. In SQL Server you would select the Error_Number() and Error_Message(). How would I do it in FirebirdSql SET TERM ^ ; CREATE PROCEDURE sprocname ( id int ) RETURNS ( gcode int, errmsg varchar(250) ) AS BEGIN gcode = 0; errmsg = ''; -- do procedure code here WHEN ANY DO BEGIN gcode = gdscode; -- ?? errmsg = ??; END SUSPEND; END^ SET TERM ; ^ 回答1: Unfortunately you will need to do that at the client side, as it is

问题 I am trying to update table A with data from table B. I thought I can do something like this update A set A.DISCOUNT = 3 from INVOICE_ITEMS A join ITEM_PRICE_QUNTITY B on A.ITEM_PRICE_NO = B.ID where A.INVOICE_ID = 33 but getting error SQL Message : -104 Invalid token can anyone help me? 回答1: It is not possible to do this with a JOIN . The Firebird UPDATE statement has no FROM clause. The syntax is: UPDATE {tablename | viewname} [[AS] alias] SET col = newval [, col = newval ...] [WHERE

问题 I am trying to update table A with data from table B. I thought I can do something like this update A set A.DISCOUNT = 3 from INVOICE_ITEMS A join ITEM_PRICE_QUNTITY B on A.ITEM_PRICE_NO = B.ID where A.INVOICE_ID = 33 but getting error SQL Message : -104 Invalid token can anyone help me? 回答1: It is not possible to do this with a JOIN . The Firebird UPDATE statement has no FROM clause. The syntax is: UPDATE {tablename | viewname} [[AS] alias] SET col = newval [, col = newval ...] [WHERE

问题 Is is possible to select from execute block result? I want to perform some operation (sum etc..) from it. select t1.* from ( execute block returns ( OUT_VALUE integer ) as begin ... suspend; end ) t1 or with t1 as ( execute block ... ) select * from t1 order by t1.sort_column Neither does not work. Anyone has an advice? Thanks! 回答1: You should create an independent stored procedure like create procedure proc1 returns ( OUT_VALUE integer ) as begin ... suspend; end and then select on this proc