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ESQL elements and statements Syntax 322 CONNECT TO connect_string [ AS connection_name ] [ USER username ] [ USING password ] ; connect_string Syntax Note Arguments to CONNECT must be either string literals enclosed in quotation marks or character-string host variables. connect_string Specifies to which database to connect. If the CONNECT statement specifies DEFAULT, SQL tries to connect to the environment-defined database, if any. The value of the DB_NAME environment variable specifies the default connect string. The connect_string can be a simple database name or a complete connect_string. A complete connect string has the components shown in the following table: connection_name username { DEFAULT | db_name | db_type:T:host_name:port_num:db_name } Connect string Description db_type Type of database. The only currently supported database type is progress T T directs the SQL engine to use the TCP/IP protocol host_name Name of the system where the database resides port_num Port number to use for the connection db_name Name of the database The name of the connection as either a character literal or host variable. If the CONNECT statement omits a connection name, the default is the name of the database. Connection names must be unique. User name for authentication of the connection. SQL verifies the user name against a corresponding password before it connects to the database. The value of the DH_USER environment variable specifies the default user name. If DH_USER is not set, the value of the USER environment variable specifies the default user name.
password ESQL elements and statements Password for authentication of the connection. SQL verifies the password against a corresponding user name before it connects to the database. The value of the DH_PASSWD environment variable determines the default password. Notes • Arguments to CONNECT must be either string literals enclosed in quotation marks or character string host variables. • An application can connect to more than one database at a time, with a maximum of 10 connections. However, the application can actually gain access to only one database at a time. The database name specified in the CONNECT statement becomes the active one. • If an application executes a SQL statement before connecting to a database, an attempt is made to connect to the environment-defined database, if any. If the connection is successful, the SQL statement is executed on that database. Examples The following example illustrates the CONNECT statement: Syntax CONNECT TO "salesdb" AS "sales_conn"; CONNECT TO "progress:T:localhost:custdb" AS "cust_conn"; CONNECT TO DEFAULT; • The first statement shown connects to the salesdb database on the local system. • The second statement connects to the custdb database on the local system. • The last statement connects to the environment-defined database by default. Authorization None Related statements DISCONNECT, SET CONNECTION DECLARE CURSOR Associates a cursor with a static query or a prepared dynamic query statement. The query or the prepared statement can have references to host variables. DECLARE cursor_name CURSOR FOR { query_expression [ ORDER BY clause ] [ FOR UPDATE clause ] | prepared_statement_name } ; cursor_name A name you assign to the cursor. The name must meet the requirements for an identifier. 323
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PROGRESS® 10 OPENEDGE® OpenEdge®
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Contents OpenEdge SQL Statements .
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Tables Contents Table 1: OpenEdge S
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Figures Contents Figure 1: ROUND di
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Preface This Preface contains the f
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OpenEdge SQL Reserved Words Preface
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Examples of syntax diagrams (SQL) T
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Preface The Apache Software Foundat
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Preface OpenEdge includes Imaging T
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Preface Advanced Internet Developme
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SQL Reference OpenEdge SQL Statemen
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ALTER DATABASE SET PRO_ENABLE_64BIT
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ALTER TABLE ALTER TABLE Syntax 4 Th
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ALTER USER ALTER USER Syntax 6 Once
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AUDIT SET AUDIT SET Syntax Examples
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Column constraints Syntax 10 CONSTR
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COMMIT COMMIT Syntax 12 Commits a t
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CREATE INDEX Syntax 14 CREATE [ UNI
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CREATE PROCEDURE Syntax 16 CREATE P
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CREATE SEQUENCE 18 schema_name Spec
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CREATE TABLE CREATE TABLE Syntax 20
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CREATE TABLE 22 progress_column_att
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CREATE TRIGGER 24 Authorization CRE
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CREATE TRIGGER 26 FOR EACH ROW mean
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CREATE VIEW Notes • You are stron
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DELETE DELETE Syntax 30 Authorizati
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DROP PROCEDURE DROP PROCEDURE Synta
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DROP TRIGGER Notes • If owner_nam
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GRANT GRANT Syntax 36 Authorization
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GRANT 38 SELECT INSERT DELETE INDEX
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LOCK TABLE LOCK TABLE Syntax 40 Aut
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REVOKE REVOKE Syntax 42 Related sta
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ROLLBACK 44 If more than one user g
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SELECT Syntax 46 GROUP BY grouping_
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SELECT 48 -- Illustrate optional 'c
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SELECT Syntax 50 FROM clause Specif
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SELECT Syntax 52 WHERE clause Speci
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SELECT Syntax 54 HAVING clause Allo
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SET CATALOG Example Syntax 56 The d
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SET PRO_CONNECT QUERY_TIMEOUT 58 QU
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SET PRO_SERVER LOG SET PRO_SERVER L
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SET TRANSACTION ISOLATION LEVEL 62
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SHOW ENCRYPT ON 64 Authorization An
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Table constraints 66 • DELETE and
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UPDATE UPDATE Syntax 68 Updates the
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UPDATE STATISTICS 70 UPDATE STATIST
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UPDATE STATISTICS 72
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ABS ABS Syntax 74 Scalar functions
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ASCII ASCII Syntax 76 • If any of
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ATAN2 78 ATAN takes the ratio (expr
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CASE CASE Syntax 80 • The argumen
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CAST 82 The following example shows
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CHAR CHAR Syntax 84 Returns a chara
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CONVERT (ODBC compatible) Syntax Ex
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COUNT Notes • COS takes an angle
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DATABASE 90 schema sequence Specifi
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DAYOFWEEK Notes • The date_expres
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DECODE DECODE Syntax 94 Compares th
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GREATEST GREATEST Syntax 96 Compati
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INSERT Notes • The char_expressio
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LAST_DAY LAST_DAY Syntax 100 Return
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LENGTH Notes • string_exp can be
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LPAD Syntax Example This example il
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MIN Notes • Specifying DISTINCT h
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MONTHNAME MONTHNAME Syntax 108 •
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NOW Syntax 110 schema sequence Spec
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PI Notes • The NVL function is no
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PRO_ARR_DESCAPE function Note Each
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QUARTER Syntax 116 array_style_expr
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REPEAT Note expression must be an I
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ROUND ROUND Syntax 120 • string_e
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RPAD Note The ROWID function return
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SIGN Notes • The argument to the
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SUBSTR Notes • The first argument
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SUFFIX SUFFIX Syntax 128 - Bigger t
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SYSDATE SYSDATE Syntax 130 Returns
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TO_CHAR TO_CHAR Syntax 132 • expr
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TO_TIMESTAMP Notes • The result i
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UPPER UPPER Syntax 136 • The resu
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YEAR Notes • The argument to the
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OpenEdge SQL reserved words 140 Tab
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OpenEdge SQL reserved words 142 Tab
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Error codes, SQLSTATE values, and m
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OpenEdge SQL system limits 162 Tabl
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Overview of system catalog tables 1
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SYSCOLUMNS SYSCOLUMNS 166 Table 5:
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SYSNCHARSTAT SYSNCHARSTAT SYSCOLAUT
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SYSDATATYPES SYSDATATYPES 170 Table
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SYSFLOATSTAT SYSFLOATSTAT SYSIDXSTA
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SYSPROCBIN SYSPROCBIN SYSPROCCOLUMN
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SYSSEQAUTH SYSSEQAUTH SYSSEQUENCES
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SYSTABLES_FULL SYSTABLES_FULL 178 T
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SYSTIMESTAT SYSTIMESTAT SYSTINYINTS
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SYSTSSTAT SYSTSSTAT SYSTSTZSTAT SYS
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SYS_CHK_CONSTRS SYS_CHK_CONSTRS SYS
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SYS_TBL_CONSTRS 186
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Supported ABL data types and corres
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OpenEdge SQL identifiers 190 Conven
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Date formats Example Date formats 1
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Time formats Time formats 194 A tim
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Data types 196 CHARACTER [ ( length
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Data types 198 REAL Corresponds to
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Data types 200 LVARBINARY ( length
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Data types 202 - You cannot define
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Literals Example The numeric string
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Literals 206 { t 'hh:mi:ss' } A tim
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Relational operators 208 Table 49:
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Relational operators 210 • The st
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Relational operators 212 • Additi
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Relational operators 214
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OpenEdge SQL Elements and Statement
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Scalar functions 232 Table 50: Comp
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Scalar functions 234 Table 50: Comp
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SQL-92 DDL and DML statements 236 T
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Syntax for ABL Attributes 238 Table
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Syntax for ABL Attributes 240 Table
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Java Class Reference This section p
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found Java Class Reference Checks w
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Returns Java Class Reference A stri
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CREATE PROCEDURE get_sal2 () RESULT
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SQLCursor CREATE PROCEDURE get_sal2
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Returns None Parameters None Throws
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Throws DhSQLException Java Class Re
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Parameters f Throws Java Class Refe
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Returns An integer indicating the n
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SQLIStatement CREATE PROCEDURE test
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Throws DhSQLException Example This
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SQLPStatement CREATE PROCEDURE sps_
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Example This code fragment illustra
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Supported data types JDBC Conforman
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Page 332 and 333: ODBC Scalar Functions 310 • start
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Page 343: Syntax Example Authorization None R
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Page 367 and 368: EXEC SQL Syntax EXEC SQL ::= EXEC S
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